Notice of Expiration of Patents
                     Due to Failure to Pay Maintenance Fee

   35 U.S.C. 41 and 37 CFR 1.362(g) provide that if the required
maintenance fee and any applicable surcharge are not paid in a patent
requiring such payment, the patent will expire at the end of the 4th, 8th
or 12th anniversary of the grant of the patent depending on the first
maintenance fee which was not paid.
   According to the records of the Office, the patents listed below have
expired due to failure to pay the required maintenance fee and any
applicable surcharge.

                    PATENTS WHICH EXPIRED ON August 1, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                          Serial                           Issue
Number                          Number                           Date

4,852,186                       07/229,349                       08/01/89
4,852,192                       07/011,527                       08/01/89
4,852,195                       07/109,298                       08/01/89
4,852,197                       07/166,684                       08/01/89
4,852,214                       07/262,484                       08/01/89
4,852,218                       07/179,869                       08/01/89
4,852,221                       07/258,593                       08/01/89
4,852,231                       07/047,299                       08/01/89
4,852,233                       07/222,251                       08/01/89
4,852,237                       07/137,467                       08/01/89
4,852,238                       07/208,578                       08/01/89
4,852,243                       07/194,144                       08/01/89
4,852,247                       07/207,362                       08/01/89
4,852,252                       07/277,094                       08/01/89
4,852,258                       06/631,000                       08/01/89
4,852,269                       07/243,485                       08/01/89
4,852,276                       07/146,415                       08/01/89
4,852,278                       07/065,528                       08/01/89
4,852,285                       06/687,632                       08/01/89
4,852,291                       07/266,008                       08/01/89
4,852,294                       07/113,388                       08/01/89
4,852,301                       07/138,291                       08/01/89
4,852,305                       07/222,362                       08/01/89
4,852,306                       07/104,068                       08/01/89
4,852,314                       07/270,375                       08/01/89
4,852,320                       07/185,053                       08/01/89
4,852,322                       07/240,037                       08/01/89
4,852,326                       07/186,461                       08/01/89
4,852,341                       07/180,992                       08/01/89
4,852,345                       07/157,012                       08/01/89
4,852,357                       07/258,261                       08/01/89
4,852,361                       07/164,962                       08/01/89
4,852,369                       07/215,650                       08/01/89
4,852,376                       07/104,705                       08/01/89
4,852,380                       07/213,228                       08/01/89
4,852,381                       07/199,431                       08/01/89
4,852,400                       07/300,240                       08/01/89
4,852,411                       07/288,081                       08/01/89
4,852,416                       07/226,196                       08/01/89
4,852,419                       07/160,646                       08/01/89
4,852,435                       07/083,631                       08/01/89
4,852,437                       07/213,192                       08/01/89
4,852,438                       07/095,071                       08/01/89
4,852,440                       07/117,147                       08/01/89
4,852,441                       07/076,406                       08/01/89
4,852,443                       06/843,054                       08/01/89
4,852,444                       06/937,871                       08/01/89
4,852,447                       07/194,140                       08/01/89
4,852,454                       07/119,182                       08/01/89
4,852,458                       07/150,351                       08/01/89
4,852,467                       07/166,778                       08/01/89
4,852,472                       07/218,992                       08/01/89
4,852,475                       07/185,890                       08/01/89
4,852,484                       07/229,152                       08/01/89
4,852,488                       06/400,707                       08/01/89
4,852,491                       07/114,215                       08/01/89
4,852,497                       06/533,427                       08/01/89
4,852,500                       07/027,611                       08/01/89
4,852,504                       07/209,703                       08/01/89
4,852,509                       07/232,296                       08/01/89
4,852,515                       06/875,624                       08/01/89
4,852,522                       07/123,737                       08/01/89
4,852,525                       06/932,804                       08/01/89
4,852,526                       07/232,144                       08/01/89
4,852,528                       07/209,279                       08/01/89
4,852,531                       07/166,503                       08/01/89
4,852,533                       07/121,340                       08/01/89
4,852,560                       07/186,267                       08/01/89
4,852,578                       07/118,993                       08/01/89
4,852,589                       07/168,467                       08/01/89
4,852,594                       07/132,936                       08/01/89
4,852,597                       07/029,716                       08/01/89
4,852,605                       07/141,609                       08/01/89
4,852,617                       07/176,944                       08/01/89
4,852,621                       07/083,110                       08/01/89
4,852,630                       07/016,499                       08/01/89
4,852,631                       07/173,292                       08/01/89
4,852,649                       07/247,084                       08/01/89
4,852,657                       06/881,412                       08/01/89
4,852,668                       07/140,488                       08/01/89
4,852,675                       07/281,066                       08/01/89
4,852,678                       07/128,052                       08/01/89
4,852,681                       07/215,601                       08/01/89
4,852,688                       07/211,820                       08/01/89
4,852,702                       07/193,039                       08/01/89
4,852,703                       07/215,577                       08/01/89
4,852,706                       07/092,240                       08/01/89
4,852,717                       06/929,457                       08/01/89
4,852,730                       07/225,400                       08/01/89
4,852,731                       07/256,900                       08/01/89
4,852,747                       07/165,982                       08/01/89
4,852,749                       07/163,305                       08/01/89
4,852,753                       07/231,371                       08/01/89
4,852,758                       07/213,533                       08/01/89
4,852,760                       07/223,799                       08/01/89
4,852,766                       07/165,861                       08/01/89
4,852,773                       07/138,713                       08/01/89
4,852,774                       07/237,186                       08/01/89
4,852,789                       07/284,707                       08/01/89
4,852,798                       07/122,751                       08/01/89
4,852,800                       06/744,980                       08/01/89
4,852,813                       07/208,235                       08/01/89
4,852,839                       07/174,890                       08/01/89
4,852,855                       07/156,380                       08/01/89
4,852,872                       07/298,692                       08/01/89
4,852,881                       07/248,592                       08/01/89
4,852,883                       07/162,613                       08/01/89
4,852,886                       07/141,993                       08/01/89
4,852,896                       06/897,894                       08/01/89
4,852,898                       07/206,714                       08/01/89
4,852,901                       07/017,262                       08/01/89
4,852,909                       07/077,897                       08/01/89
4,852,916                       07/145,456                       08/01/89
4,852,928                       07/178,524                       08/01/89
4,852,934                       07/128,447                       08/01/89
4,852,937                       07/008,345                       08/01/89
4,852,952                       07/233,409                       08/01/89
4,852,957                       07/185,093                       08/01/89
4,852,964                       07/021,467                       08/01/89
4,852,967                       06/843,637                       08/01/89
4,852,979                       07/079,764                       08/01/89
4,852,980                       07/003,957                       08/01/89
4,852,983                       07/099,103                       08/01/89
4,852,989                       07/047,804                       08/01/89
4,852,993                       07/084,354                       08/01/89
4,852,996                       06/865,989                       08/01/89
4,853,010                       06/650,240                       08/01/89
4,853,017                       07/292,592                       08/01/89
4,853,019                       06/537,674                       08/01/89
4,853,038                       07/060,787                       08/01/89
4,853,044                       07/144,697                       08/01/89
4,853,052                       07/248,707                       08/01/89
4,853,060                       07/158,839                       08/01/89
4,853,061                       07/115,802                       08/01/89
4,853,063                       07/207,785                       08/01/89
4,853,066                       07/113,546                       08/01/89
4,853,078                       07/268,650                       08/01/89
4,853,080                       07/284,166                       08/01/89
4,853,090                       07/187,175                       08/01/89
4,853,104                       07/183,866                       08/01/89
4,853,105                       07/148,204                       08/01/89
4,853,119                       07/172,688                       08/01/89
4,853,125                       07/060,616                       08/01/89
4,853,140                       07/312,012                       08/01/89
4,853,141                       07/205,207                       08/01/89
4,853,143                       07/168,723                       08/01/89
4,853,161                       07/219,879                       08/01/89
4,853,163                       07/158,447                       08/01/89
4,853,178                       07/272,327                       08/01/89
4,853,182                       07/104,173                       08/01/89
4,853,185                       07/154,606                       08/01/89
4,853,190                       07/196,799                       08/01/89
4,853,195                       07/061,217                       08/01/89
4,853,199                       07/141,774                       08/01/89
4,853,200                       07/171,199                       08/01/89
4,853,213                       07/168,989                       08/01/89
4,853,218                       07/018,243                       08/01/89
4,853,225                       06/938,200                       08/01/89
4,853,238                       07/222,658                       08/01/89
4,853,246                       07/256,411                       08/01/89
4,853,248                       07/122,550                       08/01/89
4,853,249                       06/928,370                       08/01/89
4,853,255                       07/166,994                       08/01/89
4,853,260                       07/171,723                       08/01/89
4,853,261                       07/181,058                       08/01/89
4,853,263                       07/182,464                       08/01/89
4,853,264                       07/143,728                       08/01/89
4,853,272                       07/130,763                       08/01/89
4,853,277                       07/253,986                       08/01/89
4,853,284                       07/019,336                       08/01/89
4,853,285                       07/103,013                       08/01/89
4,853,293                       07/126,918                       08/01/89
4,853,304                       07/146,533                       08/01/89
4,853,310                       07/196,739                       08/01/89
4,853,315                       07/144,825                       08/01/89
4,853,316                       07/121,938                       08/01/89
4,853,320                       07/116,413                       08/01/89
4,853,335                       07/101,415                       08/01/89
4,853,365                       07/235,235                       08/01/89
4,853,386                       06/897,109                       08/01/89
4,853,395                       07/121,543                       08/01/89
4,853,403                       06/890,034                       08/01/89
4,853,411                       07/131,681                       08/01/89
4,853,420                       07/047,071                       08/01/89
4,853,426                       07/147,953                       08/01/89
4,853,428                       07/115,800                       08/01/89
4,853,432                       07/068,590                       08/01/89
4,853,433                       07/176,660                       08/01/89
4,853,438                       07/143,216                       08/01/89
4,853,440                       07/057,092                       08/01/89
4,853,442                       07/033,563                       08/01/89
4,853,448                       07/079,404                       08/01/89
4,853,453                       07/135,512                       08/01/89
4,853,466                       07/123,391                       08/01/89
4,853,482                       06/545,150                       08/01/89
4,853,491                       06/781,080                       08/01/89
4,853,497                       07/208,467                       08/01/89
4,853,498                       07/205,896                       08/01/89
4,853,499                       07/283,509                       08/01/89
4,853,507                       07/187,667                       08/01/89
4,853,510                       07/217,700                       08/01/89
4,853,515                       07/254,001                       08/01/89
4,853,532                       07/199,636                       08/01/89
4,853,544                       07/183,650                       08/01/89
4,853,550                       06/912,932                       08/01/89
4,853,557                       07/194,925                       08/01/89
4,853,568                       07/149,845                       08/01/89
4,853,574                       07/307,544                       08/01/89
4,853,582                       07/177,651                       08/01/89
4,853,585                       07/156,491                       08/01/89
4,853,592                       07/166,144                       08/01/89
4,853,603                       07/169,018                       08/01/89
4,853,605                       07/201,265                       08/01/89
4,853,608                       07/078,197                       08/01/89
4,853,617                       07/172,628                       08/01/89
4,853,618                       07/026,319                       08/01/89
4,853,619                       07/156,931                       08/01/89
4,853,623                       07/268,644                       08/01/89
4,853,625                       07/197,508                       08/01/89
4,853,628                       07/095,284                       08/01/89
4,853,630                       07/090,764                       08/01/89
4,853,631                       07/117,035                       08/01/89
4,853,635                       07/203,542                       08/01/89
4,853,636                       07/141,788                       08/01/89
4,853,637                       07/013,729                       08/01/89
4,853,638                       07/141,424                       08/01/89
4,853,645                       07/249,623                       08/01/89
4,853,651                       07/094,471                       08/01/89
4,853,653                       07/184,849                       08/01/89
4,853,662                       07/113,521                       08/01/89
4,853,664                       07/112,215                       08/01/89
4,853,665                       07/264,474                       08/01/89
4,853,666                       07/200,623                       08/01/89
4,853,681                       07/072,227                       08/01/89
4,853,683                       07/147,965                       08/01/89
4,853,684                       07/144,374                       08/01/89
4,853,687                       07/137,332                       08/01/89
4,853,699                       07/119,938                       08/01/89
4,853,703                       07/026,705                       08/01/89
4,853,709                       07/102,330                       08/01/89
4,853,710                       06/936,079                       08/01/89
4,853,722                       07/243,596                       08/01/89
4,853,727                       07/237,172                       08/01/89
4,853,753                       07/117,583                       08/01/89
4,853,764                       07/245,403                       08/01/89
4,853,767                       07/016,918                       08/01/89
4,853,771                       07/179,327                       08/01/89
4,853,774                       07/264,257                       08/01/89
4,853,782                       07/165,691                       08/01/89
4,853,787                       07/240,302                       08/01/89
4,853,810                       07/124,137                       08/01/89
4,853,813                       07/189,317                       08/01/89
4,853,822                       07/114,161                       08/01/89
4,853,829                       07/269,082                       08/01/89
4,853,836                       07/175,291                       08/01/89
4,853,839                       07/251,665                       08/01/89
4,853,840                       07/000,427                       08/01/89
4,853,843                       07/136,174                       08/01/89
4,853,844                       06/885,883                       08/01/89
4,853,845                       06/900,870                       08/01/89
4,853,853                       07/185,282                       08/01/89
4,853,861                       07/092,088                       08/01/89
4,853,862                       06/820,739                       08/01/89
4,853,866                       07/027,817                       08/01/89
4,853,872                       06/782,901                       08/01/89
4,853,873                       07/059,609                       08/01/89
4,853,887                       07/095,214                       08/01/89
4,853,890                       06/485,396                       08/01/89
4,853,913                       06/875,110                       08/01/89
4,853,914                       07/168,246                       08/01/89
4,853,921                       07/039,748                       08/01/89
4,853,923                       06/939,026                       08/01/89
4,853,925                       07/090,371                       08/01/89
4,853,928                       07/090,869                       08/01/89
4,853,929                       07/164,483                       08/01/89
4,853,936                       07/181,016                       08/01/89
4,853,947                       07/099,569                       08/01/89
4,853,962                       07/129,306                       08/01/89
4,853,969                       07/195,428                       08/01/89
4,853,971                       06/838,553                       08/01/89

                    PATENTS WHICH EXPIRED ON July 27, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                          Serial                           Issue
Number                          Number                           Date

5,230,107                       07/835,702                       07/27/93
5,230,110                       07/915,287                       07/27/93
5,230,118                       07/794,129                       07/27/93
5,230,122                       07/763,554                       07/27/93
5,230,130                       07/929,288                       07/27/93
5,230,134                       07/833,665                       07/27/93
5,230,137                       07/789,856                       07/27/93
5,230,138                       07/667,394                       07/27/93
5,230,149                       07/939,073                       07/27/93
5,230,151                       07/842,239                       07/27/93
5,230,152                       07/802,408                       07/27/93
5,230,155                       07/965,237                       07/27/93
5,230,160                       07/933,693                       07/27/93
5,230,164                       07/784,541                       07/27/93
5,230,167                       07/785,397                       07/27/93
5,230,170                       07/892,614                       07/27/93
5,230,172                       07/889,850                       07/27/93
5,230,179                       07/922,619                       07/27/93
5,230,186                       07/864,320                       07/27/93
5,230,207                       07/721,457                       07/27/93
5,230,208                       07/939,382                       07/27/93
5,230,211                       07/685,338                       07/27/93
5,230,216                       07/918,605                       07/27/93
5,230,217                       07/885,580                       07/27/93
5,230,222                       07/805,775                       07/27/93
5,230,223                       07/855,614                       07/27/93
5,230,225                       07/885,669                       07/27/93
5,230,229                       07/834,090                       07/27/93
5,230,231                       07/921,767                       07/27/93
5,230,236                       07/771,456                       07/27/93
5,230,237                       07/880,024                       07/27/93
5,230,238                       07/676,982                       07/27/93
5,230,241                       07/798,116                       07/27/93
5,230,250                       07/753,868                       07/27/93
5,230,253                       07/869,197                       07/27/93
5,230,271                       07/814,724                       07/27/93
5,230,281                       07/727,899                       07/27/93
5,230,285                       07/641,435                       07/27/93
5,230,290                       07/895,771                       07/27/93
5,230,294                       07/880,750                       07/27/93
5,230,307                       07/950,007                       07/27/93
5,230,312                       07/962,719                       07/27/93
5,230,318                       07/895,811                       07/27/93
5,230,319                       07/771,445                       07/27/93
5,230,320                       07/906,302                       07/27/93
5,230,324                       07/770,920                       07/27/93
5,230,326                       07/967,017                       07/27/93
5,230,327                       07/920,739                       07/27/93
5,230,342                       07/752,399                       07/27/93
5,230,347                       07/845,069                       07/27/93
5,230,350                       07/706,937                       07/27/93
5,230,354                       07/753,508                       07/27/93
5,230,358                       07/566,810                       07/27/93
5,230,363                       07/683,227                       07/27/93
5,230,367                       07/785,689                       07/27/93
5,230,368                       07/931,689                       07/27/93
5,230,370                       07/845,984                       07/27/93
5,230,371                       07/829,985                       07/27/93
5,230,373                       07/754,397                       07/27/93
5,230,381                       07/910,575                       07/27/93
5,230,384                       07/864,035                       07/27/93
5,230,385                       07/932,606                       07/27/93
5,230,404                       07/843,150                       07/27/93
5,230,408                       07/932,720                       07/27/93
5,230,410                       07/770,031                       07/27/93
5,230,418                       07/975,051                       07/27/93
5,230,420                       07/994,187                       07/27/93
5,230,425                       07/844,635                       07/27/93
5,230,426                       07/944,335                       07/27/93
5,230,427                       07/713,893                       07/27/93
5,230,430                       07/826,025                       07/27/93
5,230,431                       07/773,866                       07/27/93
5,230,435                       07/977,954                       07/27/93
5,230,436                       07/890,202                       07/27/93
5,230,438                       07/948,281                       07/27/93
5,230,440                       07/773,620                       07/27/93
5,230,441                       07/737,205                       07/27/93
5,230,450                       07/698,609                       07/27/93
5,230,451                       07/762,489                       07/27/93
5,230,452                       07/835,317                       07/27/93
5,230,464                       07/987,774                       07/27/93
5,230,468                       07/686,995                       07/27/93
5,230,469                       07/908,054                       07/27/93
5,230,470                       07/718,215                       07/27/93
5,230,471                       07/666,230                       07/27/93
5,230,473                       07/867,497                       07/27/93
5,230,475                       07/988,815                       07/27/93
5,230,476                       07/708,728                       07/27/93
5,230,484                       07/749,666                       07/27/93
5,230,488                       07/913,154                       07/27/93
5,230,496                       07/740,815                       07/27/93
5,230,500                       07/915,339                       07/27/93
5,230,506                       07/844,557                       07/27/93
5,230,508                       07/820,000                       07/27/93
5,230,509                       07/867,454                       07/27/93
5,230,513                       07/832,946                       07/27/93
5,230,514                       07/926,649                       07/27/93
5,230,518                       07/808,368                       07/27/93
5,230,523                       07/738,265                       07/27/93
5,230,528                       07/813,377                       07/27/93
5,230,532                       07/855,205                       07/27/93
5,230,533                       07/784,884                       07/27/93
5,230,536                       07/910,947                       07/27/93
5,230,547                       07/789,843                       07/27/93
5,230,548                       07/933,306                       07/27/93
5,230,557                       07/814,426                       07/27/93
5,230,569                       07/768,919                       07/27/93
5,230,571                       07/983,507                       07/27/93
5,230,582                       07/718,690                       07/27/93
5,230,583                       07/684,977                       07/27/93
5,230,584                       07/746,951                       07/27/93
5,230,592                       07/894,750                       07/27/93
5,230,595                       07/881,510                       07/27/93
5,230,608                       07/834,778                       07/27/93
5,230,609                       07/830,602                       07/27/93
5,230,617                       07/765,335                       07/27/93
5,230,622                       07/929,894                       07/27/93
5,230,630                       07/915,324                       07/27/93
5,230,638                       07/929,087                       07/27/93
5,230,646                       07/792,694                       07/27/93
5,230,649                       07/715,427                       07/27/93
5,230,654                       07/906,611                       07/27/93
5,230,656                       07/925,000                       07/27/93
5,230,663                       07/792,397                       07/27/93
5,230,666                       07/980,402                       07/27/93
5,230,672                       07/668,588                       07/27/93
5,230,675                       07/981,499                       07/27/93
5,230,678                       07/941,232                       07/27/93
5,230,679                       07/886,884                       07/27/93
5,230,682                       07/708,760                       07/27/93
5,230,683                       07/830,650                       07/27/93
5,230,684                       07/885,625                       07/27/93
5,230,696                       07/915,533                       07/27/93
5,230,706                       07/850,355                       07/27/93
5,230,707                       07/587,181                       07/27/93
5,230,712                       07/952,347                       07/27/93
5,230,715                       07/789,589                       07/27/93
5,230,716                       07/913,095                       07/27/93
5,230,720                       07/823,389                       07/27/93
5,230,722                       07/277,378                       07/27/93
5,230,725                       07/989,531                       07/27/93
5,230,737                       07/701,537                       07/27/93
5,230,738                       07/809,333                       07/27/93
5,230,739                       07/606,081                       07/27/93
5,230,750                       07/770,022                       07/27/93
5,230,757                       07/785,042                       07/27/93
5,230,761                       07/970,988                       07/27/93
5,230,763                       07/571,867                       07/27/93
5,230,764                       07/474,003                       07/27/93
5,230,769                       07/805,325                       07/27/93
5,230,774                       07/753,549                       07/27/93
5,230,787                       07/814,637                       07/27/93
5,230,791                       07/725,716                       07/27/93
5,230,799                       07/729,552                       07/27/93
5,230,804                       07/852,797                       07/27/93
5,230,806                       07/803,136                       07/27/93
5,230,809                       07/849,586                       07/27/93
5,230,813                       07/805,047                       07/27/93
5,230,816                       07/878,677                       07/27/93
5,230,817                       07/680,030                       07/27/93
5,230,820                       07/973,591                       07/27/93
5,230,821                       07/801,917                       07/27/93
5,230,838                       07/721,499                       07/27/93
5,230,859                       07/613,883                       07/27/93
5,230,861                       07/817,491                       07/27/93
5,230,870                       07/888,931                       07/27/93
5,230,872                       07/749,946                       07/27/93
5,230,874                       07/925,943                       07/27/93
5,230,883                       07/825,884                       07/27/93
5,230,886                       07/853,132                       07/27/93
5,230,887                       07/629,331                       07/27/93
5,230,888                       07/530,468                       07/27/93
5,230,892                       07/911,992                       07/27/93
5,230,893                       07/811,651                       07/27/93
5,230,904                       07/773,237                       07/27/93
5,230,908                       07/774,692                       07/27/93
5,230,911                       07/780,159                       07/27/93
5,230,912                       07/617,089                       07/27/93
5,230,914                       07/694,643                       07/27/93
5,230,926                       07/874,863                       07/27/93
5,230,939                       07/577,118                       07/27/93
5,230,944                       07/787,097                       07/27/93
5,230,948                       07/886,639                       07/27/93
5,230,953                       07/625,424                       07/27/93
5,230,960                       07/653,544                       07/27/93
5,230,967                       07/834,568                       07/27/93
5,230,974                       07/813,712                       07/27/93
5,230,980                       07/737,290                       07/27/93
5,230,987                       07/530,171                       07/27/93
5,230,991                       07/778,526                       07/27/93
5,231,002                       07/581,067                       07/27/93
5,231,003                       07/522,881                       07/27/93
5,231,006                       07/582,779                       07/27/93
5,231,018                       07/790,582                       07/27/93
5,231,032                       07/681,896                       07/27/93
5,231,040                       07/825,293                       07/27/93
5,231,041                       07/819,206                       07/27/93
5,231,062                       07/565,058                       07/27/93
5,231,076                       07/739,243                       07/27/93
5,231,078                       07/755,264                       07/27/93
5,231,079                       07/891,745                       07/27/93
5,231,088                       07/898,164                       07/27/93
5,231,097                       07/739,647                       07/27/93
5,231,105                       07/354,880                       07/27/93
5,231,106                       07/804,902                       07/27/93
5,231,108                       07/832,990                       07/27/93
5,231,114                       07/867,431                       07/27/93
5,231,130                       07/974,492                       07/27/93
5,231,145                       07/679,275                       07/27/93
5,231,148                       07/794,057                       07/27/93
5,231,155                       07/693,132                       07/27/93
5,231,157                       07/648,107                       07/27/93
5,231,164                       07/842,785                       07/27/93
5,231,165                       07/882,715                       07/27/93
5,231,171                       07/806,262                       07/27/93
5,231,172                       07/964,516                       07/27/93
5,231,180                       07/851,458                       07/27/93
5,231,185                       07/734,593                       07/27/93
5,231,196                       07/627,637                       07/27/93
5,231,198                       07/909,541                       07/27/93
5,231,204                       07/941,019                       07/27/93
5,231,209                       07/806,668                       07/27/93
5,231,216                       07/743,233                       07/27/93
5,231,219                       07/906,833                       07/27/93
5,231,226                       07/948,425                       07/27/93
5,231,237                       07/927,330                       07/27/93
5,231,244                       07/768,219                       07/27/93
5,231,249                       07/773,667                       07/27/93
5,231,251                       07/868,175                       07/27/93
5,231,254                       07/805,215                       07/27/93
5,231,255                       07/807,268                       07/27/93
5,231,257                       07/792,604                       07/27/93
5,231,273                       07/682,721                       07/27/93
5,231,275                       07/852,448                       07/27/93
5,231,278                       07/705,245                       07/27/93
5,231,286                       07/748,687                       07/27/93
5,231,298                       07/833,908                       07/27/93
5,231,317                       07/672,709                       07/27/93
5,231,320                       07/947,084                       07/27/93
5,231,329                       07/728,646                       07/27/93
5,231,331                       07/842,559                       07/27/93
5,231,333                       07/613,245                       07/27/93
5,231,339                       07/670,728                       07/27/93
5,231,340                       07/449,920                       07/27/93
5,231,342                       07/646,725                       07/27/93
5,231,345                       07/666,611                       07/27/93
5,231,346                       07/833,793                       07/27/93
5,231,365                       07/802,731                       07/27/93
5,231,366                       07/663,471                       07/27/93
5,231,370                       07/739,867                       07/27/93
5,231,373                       07/723,453                       07/27/93
5,231,379                       07/587,221                       07/27/93
5,231,383                       07/674,245                       07/27/93
5,231,385                       07/648,265                       07/27/93
5,231,389                       07/818,059                       07/27/93
5,231,396                       07/818,820                       07/27/93
5,231,398                       07/861,483                       07/27/93
5,231,412                       07/780,663                       07/27/93
5,231,414                       07/813,223                       07/27/93
5,231,443                       07/807,983                       07/27/93
5,231,455                       07/930,779                       07/27/93
5,231,463                       07/795,371                       07/27/93
5,231,469                       07/924,371                       07/27/93
5,231,472                       07/760,651                       07/27/93
5,231,478                       07/813,537                       07/27/93
5,231,483                       07/825,833                       07/27/93
5,231,491                       07/689,261                       07/27/93
5,231,505                       07/715,925                       07/27/93
5,231,539                       07/826,446                       07/27/93
5,231,550                       07/667,164                       07/27/93
5,231,553                       07/925,241                       07/27/93
5,231,561                       07/836,500                       07/27/93
5,231,562                       07/636,764                       07/27/93
5,231,570                       07/625,477                       07/27/93
5,231,571                       07/567,306                       07/27/93
5,231,581                       07/779,691                       07/27/93
5,231,584                       07/759,610                       07/27/93
5,231,600                       07/511,125                       07/27/93
5,231,610                       07/919,743                       07/27/93
5,231,612                       07/937,372                       07/27/93
5,231,615                       07/686,688                       07/27/93
5,231,625                       07/757,799                       07/27/93
5,231,626                       07/859,249                       07/27/93
5,231,640                       07/557,060                       07/27/93
5,231,657                       07/628,895                       07/27/93
5,231,659                       07/896,789                       07/27/93
5,231,661                       07/738,514                       07/27/93
5,231,663                       07/670,715                       07/27/93
5,231,666                       07/870,978                       07/27/93
5,231,669                       07/375,303                       07/27/93
5,231,671                       07/719,195                       07/27/93
5,231,673                       07/677,709                       07/27/93
5,231,678                       07/831,095                       07/27/93
5,231,689                       07/852,681                       07/27/93
5,231,695                       07/574,052                       07/27/93

                    PATENTS WHICH EXPIRED ON July 29, 2001
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                          Serial                           Issue
Number                          Number                           Date


5,651,144                       08/649,330                       07/29/97
5,651,145                       08/526,451                       07/29/97
5,651,152                       08/633,088                       07/29/97
5,651,153                       08/547,137                       07/29/97
5,651,157                       08/714,273                       07/29/97
5,651,176                       08/496,981                       07/29/97
5,651,177                       08/578,822                       07/29/97
5,651,188                       08/700,918                       07/29/97
5,651,189                       08/387,288                       07/29/97
5,651,196                       08/585,015                       07/29/97
5,651,199                       08/494,875                       07/29/97
5,651,200                       08/568,145                       07/29/97
5,651,201                       08/519,927                       07/29/97
5,651,202                       08/530,508                       07/29/97
5,651,210                       08/504,651                       07/29/97
5,651,212                       08/676,088                       07/29/97
5,651,223                       08/522,029                       07/29/97
5,651,224                       08/416,282                       07/29/97
5,651,228                       08/600,369                       07/29/97
5,651,229                       08/405,707                       07/29/97
5,651,240                       08/495,979                       07/29/97
5,651,248                       08/519,980                       07/29/97
5,651,250                       08/449,896                       07/29/97
5,651,252                       08/601,446                       07/29/97
5,651,255                       08/595,915                       07/29/97
5,651,261                       08/454,283                       07/29/97
5,651,265                       08/499,578                       07/29/97
5,651,272                       08/491,673                       07/29/97
5,651,273                       08/729,097                       07/29/97
5,651,275                       08/614,498                       07/29/97
5,651,279                       08/514,316                       07/29/97
5,651,280                       08/701,908                       07/29/97
5,651,284                       08/493,660                       07/29/97
5,651,286                       08/685,251                       07/29/97
5,651,287                       08/620,543                       07/29/97
5,651,304                       08/530,213                       07/29/97
5,651,312                       08/626,042                       07/29/97
5,651,325                       08/588,350                       07/29/97
5,651,326                       08/602,235                       07/29/97
5,651,328                       08/600,364                       07/29/97
5,651,331                       08/693,990                       07/29/97
5,651,332                       08/522,060                       07/29/97
5,651,333                       08/485,643                       07/29/97
5,651,340                       08/501,058                       07/29/97
5,651,372                       08/496,039                       07/29/97
5,651,374                       08/705,329                       07/29/97
5,651,375                       08/735,512                       07/29/97
5,651,381                       08/560,802                       07/29/97
5,651,386                       08/615,811                       07/29/97
5,651,389                       08/707,825                       07/29/97
5,651,390                       08/411,817                       07/29/97
5,651,392                       08/602,823                       07/29/97
5,651,393                       08/581,907                       07/29/97
5,651,408                       08/612,782                       07/29/97
5,651,409                       08/612,781                       07/29/97
5,651,416                       08/659,613                       07/29/97
5,651,417                       08/345,617                       07/29/97
5,651,419                       08/137,110                       07/29/97
5,651,424                       08/495,991                       07/29/97
5,651,427                       08/550,971                       07/29/97
5,651,429                       08/420,925                       07/29/97
5,651,440                       08/310,413                       07/29/97
5,651,451                       08/613,801                       07/29/97
5,651,456                       08/349,895                       07/29/97
5,651,459                       08/428,199                       07/29/97
5,651,468                       08/645,129                       07/29/97
5,651,470                       08/697,488                       07/29/97
5,651,474                       08/590,965                       07/29/97
5,651,479                       08/438,983                       07/29/97
5,651,483                       08/653,002                       07/29/97
5,651,485                       08/672,906                       07/29/97
5,651,487                       08/604,853                       07/29/97
5,651,493                       08/427,509                       07/29/97
5,651,496                       08/521,833                       07/29/97
5,651,499                       08/650,174                       07/29/97
5,651,500                       08/579,939                       07/29/97
5,651,502                       08/404,157                       07/29/97
5,651,508                       08/528,231                       07/29/97
5,651,519                       08/403,636                       07/29/97
5,651,526                       08/433,847                       07/29/97
5,651,529                       08/640,578                       07/29/97
5,651,531                       08/585,722                       07/29/97
5,651,547                       08/662,717                       07/29/97
5,651,552                       08/629,406                       07/29/97
5,651,557                       08/589,579                       07/29/97
5,651,559                       08/489,644                       07/29/97
5,651,563                       08/498,954                       07/29/97
5,651,567                       08/580,432                       07/29/97
5,651,571                       08/657,154                       07/29/97
5,651,576                       08/719,592                       07/29/97
5,651,582                       08/574,315                       07/29/97
5,651,587                       08/488,907                       07/29/97
5,651,589                       08/622,787                       07/29/97
5,651,604                       08/648,341                       07/29/97
5,651,607                       08/597,511                       07/29/97
5,651,614                       08/376,316                       07/29/97
5,651,615                       08/420,401                       07/29/97
5,651,626                       08/676,733                       07/29/97
5,651,636                       08/580,976                       07/29/97
5,651,637                       08/418,033                       07/29/97
5,651,647                       08/542,511                       07/29/97
5,651,658                       08/321,790                       07/29/97
5,651,665                       08/746,528                       07/29/97
5,651,666                       08/576,159                       07/29/97
5,651,671                       08/439,868                       07/29/97
5,651,675                       08/455,428                       07/29/97
5,651,682                       08/550,820                       07/29/97
5,651,684                       08/455,330                       07/29/97
5,651,689                       08/446,955                       07/29/97
5,651,691                       08/438,214                       07/29/97
5,651,711                       08/621,664                       07/29/97
5,651,712                       08/555,743                       07/29/97
5,651,714                       08/453,893                       07/29/97
5,651,715                       08/647,587                       07/29/97
5,651,723                       08/227,156                       07/29/97
5,651,727                       08/375,771                       07/29/97
5,651,732                       08/626,570                       07/29/97
5,651,740                       08/703,336                       07/29/97
5,651,749                       08/596,873                       07/29/97
5,651,754                       08/688,379                       07/29/97
5,651,755                       08/688,392                       07/29/97
5,651,758                       08/695,740                       07/29/97
5,651,762                       08/405,529                       07/29/97
5,651,764                       08/610,984                       07/29/97
5,651,769                       08/543,612                       07/29/97
5,651,777                       08/697,489                       07/29/97
5,651,778                       08/445,306                       07/29/97
5,651,779                       08/185,212                       07/29/97
5,651,783                       08/575,829                       07/29/97
5,651,795                       08/715,789                       07/29/97
5,651,796                       08/510,339                       07/29/97
5,651,828                       08/315,332                       07/29/97
5,651,831                       08/232,112                       07/29/97
5,651,833                       08/677,480                       07/29/97
5,651,839                       08/548,939                       07/29/97
5,651,847                       08/195,859                       07/29/97
5,651,858                       08/690,192                       07/29/97
5,651,868                       08/445,969                       07/29/97
5,651,878                       08/627,526                       07/29/97
5,651,879                       08/605,419                       07/29/97
5,651,880                       08/710,362                       07/29/97
5,651,905                       08/735,190                       07/29/97
5,651,908                       08/379,498                       07/29/97
5,651,910                       08/556,801                       07/29/97
5,651,913                       08/374,307                       07/29/97
5,651,921                       08/282,158                       07/29/97
5,651,924                       08/370,560                       07/29/97
5,651,932                       08/422,250                       07/29/97
5,651,935                       08/531,075                       07/29/97
5,651,939                       08/661,766                       07/29/97
5,651,962                       08/531,414                       07/29/97
5,651,970                       08/483,745                       07/29/97
5,651,975                       08/601,842                       07/29/97
5,651,987                       08/113,485                       07/29/97
5,652,001                       08/066,779                       07/29/97
5,652,013                       08/323,818                       07/29/97
5,652,016                       08/626,380                       07/29/97
5,652,032                       08/602,121                       07/29/97
5,652,039                       08/424,261                       07/29/97
5,652,040                       08/503,686                       07/29/97
5,652,047                       08/650,729                       07/29/97
5,652,059                       08/378,061                       07/29/97
5,652,066                       08/467,766                       07/29/97
5,652,073                       08/626,992                       07/29/97
5,652,077                       08/573,229                       07/29/97
5,652,101                       08/355,224                       07/29/97
5,652,106                       08/548,199                       07/29/97
5,652,107                       08/683,045                       07/29/97
5,652,143                       08/477,656                       07/29/97
5,652,144                       07/973,431                       07/29/97
5,652,148                       08/049,862                       07/29/97
5,652,149                       08/398,846                       07/29/97
5,652,188                       08/287,224                       07/29/97
5,652,198                       08/611,580                       07/29/97
5,652,204                       08/713,437                       07/29/97
5,652,207                       08/695,564                       07/29/97
5,652,220                       08/416,518                       07/29/97
5,652,227                       08/380,581                       07/29/97
5,652,248                       08/327,589                       07/29/97
5,652,249                       08/591,610                       07/29/97
5,652,254                       08/705,097                       07/29/97
5,652,255                       08/235,315                       07/29/97
5,652,257                       08/526,244                       07/29/97
5,652,265                       08/412,545                       07/29/97
5,652,278                       08/239,630                       07/29/97
5,652,292                       08/464,776                       07/29/97
5,652,294                       08/576,525                       07/29/97
5,652,302                       07/649,272                       07/29/97
5,652,307                       08/730,808                       07/29/97
5,652,318                       08/655,094                       07/29/97
5,652,327                       08/386,886                       07/29/97
5,652,330                       08/515,806                       07/29/97
5,652,336                       08/620,936                       07/29/97
5,652,344                       08/719,653                       07/29/97
5,652,350                       08/484,138                       07/29/97
5,652,353                       08/397,470                       07/29/97
5,652,358                       08/335,354                       07/29/97
5,652,362                       08/643,819                       07/29/97
5,652,395                       08/654,908                       07/29/97
5,652,411                       08/423,808                       07/29/97
5,652,451                       08/522,935                       07/29/97
5,652,474                       08/381,842                       07/29/97
5,652,488                       08/513,793                       07/29/97
5,652,490                       08/608,987                       07/29/97
5,652,492                       08/284,676                       07/29/97
5,652,497                       08/372,817                       07/29/97
5,652,517                       08/650,083                       07/29/97
5,652,520                       08/554,717                       07/29/97
5,652,526                       08/617,470                       07/29/97
5,652,548                       08/487,530                       07/29/97
5,652,564                       08/507,145                       07/29/97
5,652,565                       08/571,522                       07/29/97
5,652,568                       08/570,037                       07/29/97
5,652,569                       08/300,450                       07/29/97
5,652,577                       08/330,357                       07/29/97
5,652,581                       08/691,903                       07/29/97
5,652,587                       08/552,944                       07/29/97
5,652,609                       08/074,174                       07/29/97
5,652,637                       08/614,004                       07/29/97
5,652,639                       08/608,489                       07/29/97
5,652,654                       08/689,391                       07/29/97
5,652,683                       08/278,691                       07/29/97
5,652,684                       08/683,561                       07/29/97
5,652,685                       08/574,812                       07/29/97
5,652,702                       08/493,808                       07/29/97
5,652,734                       08/593,701                       07/29/97
5,652,736                       08/664,676                       07/29/97
5,652,741                       08/275,439                       07/29/97
5,652,759                       08/490,495                       07/29/97
5,652,767                       08/406,321                       07/29/97
5,652,773                       08/594,596                       07/29/97
5,652,774                       08/676,747                       07/29/97
5,652,775                       08/630,649                       07/29/97
5,652,811                       08/611,956                       07/29/97
5,652,822                       08/576,169                       07/29/97
5,652,829                       08/281,191                       07/29/97
5,652,832                       08/555,925                       07/29/97
5,652,839                       08/219,557                       07/29/97
5,652,863                       08/486,774                       07/29/97
5,652,871                       08/425,751                       07/29/97
5,652,875                       08/449,563                       07/29/97
5,652,898                       08/113,679                       07/29/97
5,652,944                       08/458,829                       07/29/97