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 main-
tenance 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 ap-
plicable surcharge.

                  PATENTS WHICH EXPIRED ON September 23, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,612,674                   06/774,180                   09/23/86
4,612,707                   06/594,553                   09/23/86
4,612,709                   06/753,246                   09/23/86
4,612,710                   06/653,971                   09/23/86
4,612,712                   06/745,412                   09/23/86
4,612,714                   06/757,917                   09/23/86
4,612,717                   06/756,743                   09/23/86
4,612,721                   06/555,787                   09/23/86
4,612,730                   06/770,739                   09/23/86
4,612,734                   06/726,065                   09/23/86
4,612,736                   06/661,314                   09/23/86
4,612,741                   06/435,470                   09/23/86
4,612,743                   06/735,800                   09/23/86
4,612,747                   06/732,837                   09/23/86
4,612,773                   06/797,833                   09/23/86
4,612,777                   06/634,801                   09/23/86
4,612,793                   06/583,146                   09/23/86
4,612,802                   06/679,313                   09/23/86
4,612,805                   06/685,867                   09/23/86
4,612,809                   06/550,914                   09/23/86
4,612,816                   06/546,726                   09/23/86
4,612,820                   06/740,704                   09/23/86
4,612,821                   06/461,827                   09/23/86
4,612,823                   06/778,869                   09/23/86
4,612,830                   06/772,667                   09/23/86
4,612,835                   06/691,924                   09/23/86
4,612,837                   06/462,330                   09/23/86
4,612,842                   06/765,521                   09/23/86
4,612,858                   06/651,445                   09/23/86
4,612,860                   06/743,879                   09/23/86
4,612,862                   06/596,646                   09/23/86
4,612,865                   06/754,425                   09/23/86
4,612,868                   06/561,040                   09/23/86
4,612,870                   06/634,519                   09/23/86
4,612,889                   06/804,012                   09/23/86
4,612,890                   06/727,282                   09/23/86
4,612,897                   06/653,854                   09/23/86
4,612,898                   06/707,570                   09/23/86
4,612,904                   06/579,962                   09/23/86
4,612,909                   06/704,571                   09/23/86
4,612,913                   06/702,455                   09/23/86
4,612,915                   06/737,188                   09/23/86
4,612,918                   06/661,351                   09/23/86
4,612,924                   06/396,656                   09/23/86
4,612,936                   06/644,902                   09/23/86
4,612,939                   06/661,087                   09/23/86
4,612,947                   06/739,975                   09/23/86
4,612,956                   06/691,063                   09/23/86
4,612,963                   06/578,666                   09/23/86
4,612,966                   06/719,489                   09/23/86
4,612,975                   06/697,843                   09/23/86
4,612,978                   06/721,074                   09/23/86
4,612,987                   06/767,627                   09/23/86
4,612,995                   06/663,291                   09/23/86
4,612,997                   06/751,326                   09/23/86
4,613,003                   06/607,009                   09/23/86
4,613,017                   06/627,364                   09/23/86
4,613,022                   06/444,879                   09/23/86
4,613,026                   06/510,989                   09/23/86
4,613,034                   06/753,621                   09/23/86
4,613,043                   06/720,854                   09/23/86
4,613,055                   06/748,690                   09/23/86
4,613,062                   06/601,404                   09/23/86
4,613,066                   06/848,834                   09/23/86
4,613,070                   06/723,245                   09/23/86
4,613,071                   06/715,473                   09/23/86
4,613,072                   06/747,824                   09/23/86
4,613,074                   06/592,405                   09/23/86
4,613,078                   06/598,428                   09/23/86
4,613,079                   06/664,464                   09/23/86
4,613,085                   06/641,338                   09/23/86
4,613,088                   06/629,633                   09/23/86
4,613,093                   06/804,609                   09/23/86
4,613,105                   06/694,859                   09/23/86
4,613,114                   06/587,520                   09/23/86
4,613,118                   06/581,153                   09/23/86
4,613,120                   06/738,673                   09/23/86
4,613,123                   06/611,692                   09/23/86
4,613,133                   06/604,625                   09/23/86
4,613,137                   06/710,548                   09/23/86
4,613,140                   06/661,666                   09/23/86
4,613,146                   06/606,649                   09/23/86
4,613,168                   06/470,707                   09/23/86
4,613,178                   06/693,941                   09/23/86
4,613,188                   06/683,234                   09/23/86
4,613,195                   06/711,527                   09/23/86
4,613,200                   06/629,160                   09/23/86
4,613,210                   06/829,847                   09/23/86
4,613,232                   06/584,929                   09/23/86
4,613,234                   06/568,381                   09/23/86
4,613,237                   06/768,307                   09/23/86
4,613,249                   06/693,515                   09/23/86
4,613,251                   06/713,846                   09/23/86
4,613,254                   06/648,151                   09/23/86
4,613,267                   06/679,745                   09/23/86
4,613,270                   06/577,182                   09/23/86
4,613,273                   06/645,036                   09/23/86
4,613,285                   06/719,146                   09/23/86
4,613,286                   06/687,798                   09/23/86
4,613,289                   06/743,572                   09/23/86
4,613,295                   06/646,024                   09/23/86
4,613,305                   06/732,304                   09/23/86
4,613,315                   06/703,349                   09/23/86
4,613,323                   06/672,414                   09/23/86
4,613,325                   06/564,332                   09/23/86
4,613,330                   06/662,185                   09/23/86
4,613,331                   06/658,192                   09/23/86
4,613,341                   06/739,834                   09/23/86
4,613,345                   06/764,909                   09/23/86
4,613,346                   06/781,195                   09/23/86
4,613,360                   06/302,895                   09/23/86
4,613,368                   06/783,585                   09/23/86
4,613,375                   06/707,857                   09/23/86
4,613,384                   06/788,208                   09/23/86
4,613,388                   06/419,273                   09/23/86
4,613,394                   06/589,561                   09/23/86
4,613,397                   06/672,447                   09/23/86
4,613,406                   06/699,238                   09/23/86
4,613,410                   06/540,037                   09/23/86
4,613,411                   06/803,199                   09/23/86
4,613,418                   06/675,718                   09/23/86
4,613,425                   06/572,097                   09/23/86
4,613,426                   06/625,713                   09/23/86
4,613,427                   06/770,098                   09/23/86
4,613,428                   06/513,535                   09/23/86
4,613,437                   06/634,144                   09/23/86
4,613,439                   06/708,563                   09/23/86
4,613,443                   06/625,381                   09/23/86
4,613,445                   06/633,210                   09/23/86
4,613,452                   06/664,397                   09/23/86
4,613,470                   06/617,622                   09/23/86
4,613,476                   06/376,611                   09/23/86
4,613,480                   06/783,581                   09/23/86
4,613,482                   06/564,791                   09/23/86
4,613,484                   06/677,000                   09/23/86
4,613,485                   06/581,101                   09/23/86
4,613,486                   06/618,158                   09/23/86
4,613,490                   06/729,751                   09/23/86
4,613,493                   06/315,009                   09/23/86
4,613,494                   06/689,787                   09/23/86
4,613,498                   06/664,313                   09/23/86
4,613,499                   06/747,241                   09/23/86
4,613,503                   06/659,912                   09/23/86
4,613,506                   06/528,252                   09/23/86
4,613,512                   06/673,812                   09/23/86
4,613,513                   06/727,509                   09/23/86
4,613,514                   06/624,336                   09/23/86
4,613,526                   06/782,723                   09/23/86
4,613,538                   06/772,939                   09/23/86
4,613,540                   06/658,749                   09/23/86
4,613,543                   06/604,710                   09/23/86
4,613,549                   06/702,311                   09/23/86
4,613,550                   06/770,945                   09/23/86
4,613,555                   06/762,149                   09/23/86
4,613,560                   06/687,460                   09/23/86
4,613,564                   06/724,476                   09/23/86
4,613,566                   06/573,013                   09/23/86
4,613,568                   06/603,688                   09/23/86
4,613,571                   06/581,763                   09/23/86
4,613,573                   06/495,489                   09/23/86
4,613,576                   06/473,830                   09/23/86
4,613,577                   06/624,658                   09/23/86
4,613,580                   06/737,320                   09/23/86
4,613,587                   06/628,724                   09/23/86
4,613,591                   06/509,197                   09/23/86
4,613,594                   06/672,059                   09/23/86
4,613,595                   06/494,570                   09/23/86
4,613,608                   06/731,893                   09/23/86
4,613,609                   06/675,172                   09/23/86
4,613,626                   06/747,036                   09/23/86
4,613,628                   06/668,216                   09/23/86
4,613,631                   06/737,380                   09/23/86
4,613,633                   06/705,639                   09/23/86
4,613,634                   06/775,922                   09/23/86
4,613,635                   06/720,646                   09/23/86
4,613,638                   06/766,500                   09/23/86
4,613,639                   06/790,800                   09/23/86
4,613,650                   06/701,500                   09/23/86
4,613,652                   06/742,529                   09/23/86
4,613,666                   06/776,093                   09/23/86
4,613,671                   06/749,145                   09/23/86
4,613,673                   06/535,017                   09/23/86
4,613,680                   06/589,075                   09/23/86
4,613,682                   06/767,222                   09/23/86
4,613,698                   06/706,050                   09/23/86
4,613,703                   06/365,137                   09/23/86
4,613,704                   06/675,979                   09/23/86
4,613,708                   06/467,648                   09/23/86
4,613,712                   06/687,699                   09/23/86
4,613,714                   06/785,472                   09/23/86
4,613,715                   06/754,313                   09/23/86
4,613,717                   06/741,629                   09/23/86
4,613,720                   06/818,806                   09/23/86
4,613,723                   06/568,273                   09/23/86
4,613,731                   06/403,193                   09/23/86
4,613,740                   06/548,888                   09/23/86
4,613,744                   06/635,604                   09/23/86
4,613,749                   06/598,438                   09/23/86
4,613,750                   06/549,227                   09/23/86
4,613,752                   06/520,247                   09/23/86
4,613,756                   06/385,420                   09/23/86
4,613,763                   06/686,092                   09/23/86
4,613,765                   06/617,658                   09/23/86
4,613,768                   06/670,508                   09/23/86
4,613,770                   06/678,024                   09/23/86
4,613,775                   06/618,798                   09/23/86
4,613,776                   06/659,930                   09/23/86
4,613,778                   06/644,142                   09/23/86
4,613,781                   06/648,534                   09/23/86
4,613,788                   06/601,517                   09/23/86
4,613,798                   06/718,799                   09/23/86
4,613,805                   06/726,775                   09/23/86
4,613,806                   06/692,968                   09/23/86
4,613,815                   06/489,175                   09/23/86
4,613,818                   06/505,686                   09/23/86
4,613,821                   06/457,045                   09/23/86
4,613,824                   06/671,424                   09/23/86
4,613,827                   06/758,341                   09/23/86
4,613,842                   06/615,871                   09/23/86
4,613,852                   06/546,041                   09/23/86
4,613,857                   06/568,987                   09/23/86
4,613,860                   06/561,503                   09/23/86
4,613,870                   06/532,881                   09/23/86
4,613,879                   06/601,568                   09/23/86
4,613,884                   06/547,095                   09/23/86
4,613,887                   06/574,583                   09/23/86
4,613,889                   06/640,722                   09/23/86
4,613,893                   06/665,298                   09/23/86
4,613,896                   06/688,292                   09/23/86
4,613,900                   06/563,163                   09/23/86
4,613,904                   06/589,629                   09/23/86
4,613,908                   06/523,770                   09/23/86
4,613,916                   06/566,942                   09/23/86
4,613,920                   06/502,269                   09/23/86
4,613,923                   06/661,962                   09/23/86
4,613,926                   06/666,859                   09/23/86
4,613,936                   06/470,025                   09/23/86
4,613,938                   06/695,169                   09/23/86
4,613,939                   06/638,922                   09/23/86
4,613,943                   06/599,472                   09/23/86
4,613,952                   06/512,809                   09/23/86
4,613,963                   06/507,649                   09/23/86
4,613,969                   06/668,342                   09/23/86
4,613,971                   06/599,179                   09/23/86
4,613,975                   06/643,857                   09/23/86
4,613,976                   06/606,427                   09/23/86
4,613,980                   06/646,792                   09/23/86
4,613,986                   06/620,660                   09/23/86
4,613,989                   06/656,026                   09/23/86

                  PATENTS WHICH EXPIRED ON September 18, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

4,956,882                   07/382,776                   09/18/90
4,956,887                   07/333,047                   09/18/90
4,956,888                   07/318,859                   09/18/90
4,956,890                   07/317,664                   09/18/90
4,956,893                   07/464,303                   09/18/90
4,956,894                   07/454,040                   09/18/90
4,956,897                   07/369,146                   09/18/90
4,956,907                   07/286,315                   09/18/90
4,956,914                   07/454,428                   09/18/90
4,956,916                   07/234,680                   09/18/90
4,956,920                   07/190,729                   09/18/90
4,956,925                   07/402,573                   09/18/90
4,956,930                   07/336,684                   09/18/90
4,956,933                   07/316,808                   09/18/90
4,956,942                   07/364,012                   09/18/90
4,956,943                   07/481,558                   09/18/90
4,956,946                   07/322,300                   09/18/90
4,956,955                   07/315,059                   09/18/90
4,956,963                   07/271,024                   09/18/90
4,956,971                   07/227,748                   09/18/90
4,956,974                   07/472,818                   09/18/90
4,956,977                   07/233,269                   09/18/90
4,956,978                   07/404,038                   09/18/90
4,956,979                   07/387,532                   09/18/90
4,956,985                   07/344,802                   09/18/90
4,956,995                   07/465,687                   09/18/90
4,957,014                   07/335,359                   09/18/90
4,957,016                   07/497,832                   09/18/90
4,957,020                   07/419,321                   09/18/90
4,957,025                   07/326,914                   09/18/90
4,957,026                   07/411,047                   09/18/90
4,957,030                   07/355,555                   09/18/90
4,957,045                   07/279,656                   09/18/90
4,957,048                   07/219,019                   09/18/90
4,957,052                   07/338,818                   09/18/90
4,957,055                   07/372,291                   09/18/90
4,957,075                   07/403,852                   09/18/90
4,957,077                   07/450,696                   09/18/90
4,957,081                   07/393,404                   09/18/90
4,957,084                   07/272,887                   09/18/90
4,957,098                   07/366,281                   09/18/90
4,957,100                   07/165,548                   09/18/90
4,957,101                   07/088,422                   09/18/90
4,957,118                   07/144,487                   09/18/90
4,957,130                   07/391,239                   09/18/90
4,957,132                   07/449,206                   09/18/90
4,957,134                   07/205,062                   09/18/90
4,957,137                   07/320,445                   09/18/90
4,957,140                   07/337,955                   09/18/90
4,957,143                   07/213,955                   09/18/90
4,957,144                   07/289,802                   09/18/90
4,957,145                   07/371,029                   09/18/90
4,957,148                   07/427,400                   09/18/90
4,957,164                   07/339,148                   09/18/90
4,957,171                   07/341,777                   09/18/90
4,957,173                   07/366,661                   09/18/90
4,957,178                   07/397,108                   09/18/90
4,957,185                   07/479,051                   09/18/90
4,957,190                   07/316,938                   09/18/90
4,957,191                   07/362,191                   09/18/90
4,957,194                   07/242,282                   09/18/90
4,957,207                   07/308,417                   09/18/90
4,957,211                   07/378,057                   09/18/90
4,957,212                   07/263,964                   09/18/90
4,957,223                   07/393,252                   09/18/90
4,957,224                   07/407,724                   09/18/90
4,957,226                   07/058,470                   09/18/90
4,957,235                   07/326,929                   09/18/90
4,957,239                   07/352,015                   09/18/90
4,957,244                   07/258,372                   09/18/90
4,957,246                   07/493,762                   09/18/90
4,957,247                   07/278,100                   09/18/90
4,957,249                   07/331,269                   09/18/90
4,957,262                   07/228,943                   09/18/90
4,957,266                   07/402,915                   09/18/90
4,957,268                   07/282,963                   09/18/90
4,957,277                   07/471,040                   09/18/90
4,957,281                   07/303,139                   09/18/90
4,957,285                   07/333,399                   09/18/90
4,957,286                   07/481,787                   09/18/90
4,957,292                   07/463,206                   09/18/90
4,957,293                   07/361,359                   09/18/90
4,957,302                   07/311,175                   09/18/90
4,957,304                   07/275,131                   09/18/90
4,957,305                   07/404,056                   09/18/90
4,957,308                   07/384,493                   09/18/90
4,957,312                   07/447,380                   09/18/90
4,957,327                   07/381,840                   09/18/90
4,957,328                   07/323,782                   09/18/90
4,957,330                   07/307,481                   09/18/90
4,957,334                   07/265,594                   09/18/90
4,957,338                   07/259,118                   09/18/90
4,957,345                   07/404,632                   09/18/90
4,957,349                   07/170,848                   09/18/90
4,957,352                   07/224,813                   09/18/90
4,957,369                   07/298,931                   09/18/90
4,957,370                   07/404,050                   09/18/90
4,957,380                   07/167,810                   09/18/90
4,957,399                   07/406,866                   09/18/90
4,957,400                   07/337,291                   09/18/90
4,957,406                   07/349,399                   09/18/90
4,957,408                   07/178,233                   09/18/90
4,957,413                   06/856,262                   09/18/90
4,957,415                   07/120,740                   09/18/90
4,957,418                   07/330,389                   09/18/90
4,957,425                   07/352,404                   09/18/90
4,957,427                   07/167,300                   09/18/90
4,957,428                   07/327,703                   09/18/90
4,957,429                   07/395,604                   09/18/90
4,957,437                   07/311,539                   09/18/90
4,957,439                   07/097,824                   09/18/90
4,957,441                   07/287,003                   09/18/90
4,957,446                   07/448,696                   09/18/90
4,957,454                   07/247,193                   09/18/90
4,957,457                   07/219,053                   09/18/90
4,957,458                   07/316,975                   09/18/90
4,957,459                   07/397,727                   09/18/90
4,957,462                   07/353,875                   09/18/90
4,957,466                   07/425,684                   09/18/90
4,957,468                   07/256,884                   09/18/90
4,957,475                   07/347,758                   09/18/90
4,957,478                   07/258,788                   09/18/90
4,957,486                   07/416,064                   09/18/90
4,957,490                   07/131,228                   09/18/90
4,957,492                   07/280,946                   09/18/90
4,957,501                   07/290,275                   09/18/90
4,957,509                   07/398,315                   09/18/90
4,957,517                   07/345,147                   09/18/90
4,957,519                   07/372,438                   09/18/90
4,957,533                   07/239,355                   09/18/90
4,957,535                   07/250,888                   09/18/90
4,957,537                   07/171,799                   09/18/90
4,957,542                   07/366,501                   09/18/90
4,957,544                   07/401,705                   09/18/90
4,957,545                   07/302,612                   09/18/90
4,957,547                   07/256,410                   09/18/90
4,957,551                   07/209,492                   09/18/90
4,957,558                   07/206,128                   09/18/90
4,957,563                   07/132,426                   09/18/90
4,957,564                   07/272,445                   09/18/90
4,957,579                   07/357,820                   09/18/90
4,957,582                   07/324,140                   09/18/90
4,957,584                   07/353,833                   09/18/90
4,957,586                   07/395,156                   09/18/90
4,957,592                   07/458,182                   09/18/90
4,957,593                   07/319,971                   09/18/90
4,957,594                   07/309,260                   09/18/90
4,957,595                   07/432,864                   09/18/90
4,957,596                   07/366,548                   09/18/90
4,957,598                   07/326,384                   09/18/90
4,957,604                   07/300,975                   09/18/90
4,957,617                   07/293,723                   09/18/90
4,957,632                   07/247,272                   09/18/90
4,957,633                   07/307,732                   09/18/90
4,957,640                   07/318,772                   09/18/90
4,957,643                   07/415,093                   09/18/90
4,957,644                   07/372,294                   09/18/90
4,957,661                   07/251,499                   09/18/90
4,957,667                   07/268,258                   09/18/90
4,957,668                   07/280,926                   09/18/90
4,957,671                   06/743,410                   09/18/90
4,957,677                   07/244,106                   09/18/90
4,957,684                   07/267,359                   09/18/90
4,957,696                   07/434,879                   09/18/90
4,957,697                   07/241,427                   09/18/90
4,957,699                   07/217,001                   09/18/90
4,957,700                   07/376,907                   09/18/90
4,957,709                   07/419,927                   09/18/90
4,957,710                   07/175,671                   09/18/90
4,957,711                   07/344,293                   09/18/90
4,957,712                   07/457,322                   09/18/90
4,957,716                   07/274,514                   09/18/90
4,957,720                   07/472,754                   09/18/90
4,957,726                   07/337,086                   09/18/90
4,957,735                   07/012,321                   09/18/90
4,957,736                   07/357,267                   09/18/90
4,957,737                   07/396,195                   09/18/90
4,957,738                   07/135,027                   09/18/90
4,957,747                   07/351,825                   09/18/90
4,957,749                   06/863,269                   09/18/90
4,957,751                   07/377,511                   09/18/90
4,957,752                   07/294,507                   09/18/90
4,957,758                   07/222,863                   09/18/90
4,957,768                   07/311,064                   09/18/90
4,957,777                   07/423,494                   09/18/90
4,957,780                   07/407,980                   09/18/90
4,957,781                   07/201,442                   09/18/90
4,957,783                   07/411,181                   09/18/90
4,957,786                   07/472,302                   09/18/90
4,957,792                   07/268,573                   09/18/90
4,957,793                   07/282,865                   09/18/90
4,957,800                   07/372,406                   09/18/90
4,957,810                   07/342,176                   09/18/90
4,957,812                   07/107,454                   09/18/90
4,957,817                   07/276,006                   09/18/90
4,957,819                   07/358,828                   09/18/90
4,957,821                   07/357,836                   09/18/90
4,957,823                   07/357,835                   09/18/90
4,957,824                   07/169,982                   09/18/90
4,957,828                   07/281,609                   09/18/90
4,957,830                   07/334,361                   09/18/90
4,957,835                   07/049,839                   09/18/90
4,957,838                   07/414,480                   09/18/90
4,957,847                   07/278,989                   09/18/90
4,957,863                   07/148,409                   09/18/90
4,957,865                   06/879,103                   09/18/90
4,957,875                   07/226,738                   09/18/90
4,957,884                   07/181,852                   09/18/90
4,957,885                   07/339,137                   09/18/90
4,957,899                   07/292,676                   09/18/90
4,957,900                   07/174,503                   09/18/90
4,957,902                   07/287,005                   09/18/90
4,957,906                   07/163,204                   09/18/90
4,957,910                   07/165,300                   09/18/90
4,957,927                   07/410,705                   09/18/90
4,957,928                   07/288,332                   09/18/90
4,957,931                   07/367,573                   09/18/90
4,957,938                   07/369,163                   09/18/90
4,957,941                   07/463,892                   09/18/90
4,957,951                   06/880,171                   09/18/90
4,957,954                   07/301,930                   09/18/90
4,957,957                   07/359,528                   09/18/90
4,957,961                   07/332,398                   09/18/90
4,957,963                   07/401,485                   09/18/90
4,957,964                   07/481,662                   09/18/90
4,957,966                   07/203,187                   09/18/90
4,957,967                   07/370,334                   09/18/90
4,957,976                   07/415,380                   09/18/90
4,957,978                   07/344,289                   09/18/90
4,957,979                   07/281,861                   09/18/90
4,957,982                   07/215,765                   09/18/90
4,957,985                   07/138,653                   09/18/90
4,957,992                   07/181,173                   09/18/90
4,957,996                   07/256,408                   09/18/90
4,957,999                   07/361,085                   09/18/90
4,958,004                   07/080,283                   09/18/90
4,958,007                   07/194,799                   09/18/90
4,958,008                   07/216,407                   09/18/90
4,958,013                   07/362,200                   09/18/90
4,958,017                   07/283,805                   09/18/90
4,958,024                   07/230,418                   09/18/90
4,958,029                   07/140,996                   09/18/90
4,958,035                   07/373,000                   09/18/90
4,958,038                   07/326,551                   09/18/90
4,958,040                   07/410,202                   09/18/90
4,958,042                   07/262,582                   09/18/90
4,958,043                   07/182,633                   09/18/90
4,958,044                   07/461,973                   09/18/90
4,958,046                   07/410,050                   09/18/90
4,958,053                   07/195,034                   09/18/90
4,958,062                   07/317,189                   09/18/90
4,958,063                   07/371,393                   09/18/90
4,958,070                   07/267,896                   09/18/90
4,958,074                   07/218,822                   09/18/90
4,958,077                   07/238,734                   09/18/90
4,958,078                   07/293,694                   09/18/90
4,958,081                   06/765,611                   09/18/90
4,958,087                   07/403,220                   09/18/90
4,958,089                   07/287,320                   09/18/90
4,958,093                   07/356,917                   09/18/90
4,958,095                   07/205,188                   09/18/90
4,958,097                   07/372,069                   09/18/90
4,958,098                   07/123,836                   09/18/90
4,958,100                   07/313,952                   09/18/90
4,958,102                   07/117,598                   09/18/90
4,958,103                   07/289,281                   09/18/90
4,958,107                   07/409,493                   09/18/90
4,958,142                   07/363,517                   09/18/90
4,958,143                   07/317,648                   09/18/90
4,958,152                   07/208,208                   09/18/90
4,958,156                   07/178,025                   09/18/90
4,958,162                   07/240,665                   09/18/90
4,958,170                   07/251,603                   09/18/90
4,958,204                   07/453,367                   09/18/90
4,958,225                   07/363,554                   09/18/90
4,958,228                   07/303,345                   09/18/90
4,958,242                   07/364,460                   09/18/90
4,958,248                   07/286,426                   09/18/90
4,958,249                   07/220,272                   09/18/90
4,958,250                   06/767,108                   09/18/90
4,958,264                   07/404,406                   09/18/90
4,958,278                   07/179,361                   09/18/90
4,958,288                   07/213,927                   09/18/90
4,958,290                   07/273,959                   09/18/90
4,958,293                   07/269,744                   09/18/90
4,958,294                   07/176,729                   09/18/90
4,958,297                   06/887,901                   09/18/90
4,958,300                   07/260,512                   09/18/90
4,958,306                   07/141,248                   09/18/90
4,958,310                   07/122,946                   09/18/90
4,958,315                   06/751,350                   09/18/90
4,958,332                   07/405,473                   09/18/90
4,958,335                   07/286,723                   09/18/90
4,958,339                   07/293,048                   09/18/90
4,958,347                   07/275,185                   09/18/90
4,958,350                   07/163,616                   09/18/90
4,958,356                   07/416,964                   09/18/90
4,958,371                   07/183,065                   09/18/90
4,958,372                   07/327,740                   09/18/90

                  PATENTS WHICH EXPIRED ON September 20, 1998
                    DUE TO FAILURE TO PAY MAINTENANCE FEES

Patent                     Application                      Issue
Number                        Number                         Date

5,347,659                   08/058,139                   09/20/94
5,347,660                   08/142,956                   09/20/94
5,347,661                   08/086,234                   09/20/94
5,347,663                   08/134,698                   09/20/94
5,347,666                   08/191,488                   09/20/94
5,347,674                   08/087,578                   09/20/94
5,347,676                   08/043,726                   09/20/94
5,347,691                   08/001,159                   09/20/94
5,347,696                   08/164,719                   09/20/94
5,347,704                   08/011,234                   09/20/94
5,347,715                   08/121,205                   09/20/94
5,347,717                   08/147,313                   09/20/94
5,347,726                   07/997,888                   09/20/94
5,347,728                   07/913,170                   09/20/94
5,347,730                   08/012,375                   09/20/94
5,347,731                   08/077,499                   09/20/94
5,347,734                   08/027,949                   09/20/94
5,347,735                   07/971,941                   09/20/94
5,347,738                   07/970,797                   09/20/94
5,347,744                   08/086,536                   09/20/94
5,347,751                   08/132,576                   09/20/94
5,347,753                   07/773,346                   09/20/94
5,347,756                   08/046,402                   09/20/94
5,347,768                   08/076,167                   09/20/94
5,347,769                   08/093,264                   09/20/94
5,347,770                   07/961,907                   09/20/94
5,347,775                   08/097,212                   09/20/94
5,347,779                   07/728,256                   09/20/94
5,347,781                   08/055,288                   09/20/94
5,347,782                   08/060,316                   09/20/94
5,347,786                   07/969,717                   09/20/94
5,347,794                   08/096,961                   09/20/94
5,347,802                   07/596,029                   09/20/94
5,347,803                   07/871,314                   09/20/94
5,347,804                   08/171,859                   09/20/94
5,347,817                   08/093,719                   09/20/94
5,347,818                   08/013,761                   09/20/94
5,347,822                   08/171,959                   09/20/94
5,347,828                   08/083,824                   09/20/94
5,347,837                   07/839,128                   09/20/94
5,347,844                   08/004,086                   09/20/94
5,347,851                   07/977,544                   09/20/94
5,347,860                   08/124,864                   09/20/94
5,347,866                   08/042,083                   09/20/94
5,347,877                   08/125,008                   09/20/94
5,347,889                   08/164,792                   09/20/94
5,347,890                   08/068,154                   09/20/94
5,347,892                   08/029,709                   09/20/94
5,347,904                   08/107,587                   09/20/94
5,347,906                   08/151,276                   09/20/94
5,347,908                   07/961,628                   09/20/94
5,347,913                   08/110,581                   09/20/94
5,347,918                   08/223,718                   09/20/94
5,347,919                   08/078,936                   09/20/94
5,347,921                   07/735,309                   09/20/94
5,347,924                   07/696,207                   09/20/94
5,347,925                   07/910,016                   09/20/94
5,347,943                   07/696,575                   09/20/94
5,347,945                   08/070,413                   09/20/94
5,347,947                   08/103,833                   09/20/94
5,347,950                   07/887,726                   09/20/94
5,347,952                   08/130,998                   09/20/94
5,347,955                   08/129,979                   09/20/94
5,347,959                   08/018,242                   09/20/94
5,347,974                   07/949,881                   09/20/94
5,347,975                   07/952,638                   09/20/94
5,347,976                   08/005,110                   09/20/94
5,347,979                   08/142,977                   09/20/94
5,347,981                   08/117,308                   09/20/94
5,347,982                   08/120,165                   09/20/94
5,347,984                   08/194,858                   09/20/94
5,347,985                   08/025,620                   09/20/94
5,347,987                   07/876,628                   09/20/94
5,347,991                   07/963,846                   09/20/94
5,347,996                   07/992,022                   09/20/94
5,347,997                   07/294,464                   09/20/94
5,348,001                   07/929,701                   09/20/94
5,348,006                   07/750,108                   09/20/94
5,348,008                   07/853,962                   09/20/94
5,348,026                   07/953,475                   09/20/94
5,348,028                   08/132,049                   09/20/94
5,348,029                   07/842,877                   09/20/94
5,348,030                   08/168,136                   09/20/94
5,348,034                   08/083,549                   09/20/94
5,348,036                   08/056,403                   09/20/94
5,348,038                   07/992,854                   09/20/94
5,348,041                   08/065,592                   09/20/94
5,348,042                   08/046,005                   09/20/94
5,348,050                   08/093,476                   09/20/94
5,348,052                   08/128,785                   09/20/94
5,348,054                   08/125,041                   09/20/94
5,348,062                   08/096,869                   09/20/94
5,348,070                   08/027,359                   09/20/94
5,348,075                   08/033,051                   09/20/94
5,348,077                   07/677,396                   09/20/94
5,348,082                   08/051,485                   09/20/94
5,348,084                   07/976,509                   09/20/94
5,348,086                   07/956,164                   09/20/94
5,348,098                   07/916,987                   09/20/94
5,348,102                   08/059,499                   09/20/94
5,348,103                   07/931,956                   09/20/94
5,348,110                   07/849,048                   09/20/94
5,348,113                   08/105,592                   09/20/94
5,348,138                   08/110,697                   09/20/94
5,348,141                   08/160,357                   09/20/94
5,348,145                   08/125,648                   09/20/94
5,348,150                   08/035,632                   09/20/94
5,348,156                   08/050,936                   09/20/94
5,348,165                   08/024,214                   09/20/94
5,348,178                   07/986,513                   09/20/94
5,348,187                   07/513,088                   09/20/94
5,348,194                   08/020,146                   09/20/94
5,348,200                   08/068,765                   09/20/94
5,348,203                   08/110,088                   09/20/94
5,348,204                   08/034,714                   09/20/94
5,348,207                   08/071,063                   09/20/94
5,348,209                   08/063,037                   09/20/94
5,348,214                   08/012,369                   09/20/94
5,348,223                   07/867,092                   09/20/94
5,348,224                   07/982,078                   09/20/94
5,348,226                   08/125,708                   09/20/94
5,348,231                   08/132,142                   09/20/94
5,348,234                   08/055,835                   09/20/94
5,348,235                   07/908,246                   09/20/94
5,348,236                   08/127,545                   09/20/94
5,348,238                   07/920,998                   09/20/94
5,348,240                   08/101,338                   09/20/94
5,348,257                   08/027,357                   09/20/94
5,348,262                   08/122,665                   09/20/94
5,348,265                   08/053,910                   09/20/94
5,348,273                   08/093,631                   09/20/94
5,348,274                   08/092,396                   09/20/94
5,348,285                   08/006,329                   09/20/94
5,348,291                   07/938,884                   09/20/94
5,348,294                   08/185,209                   09/20/94
5,348,298                   08/161,885                   09/20/94
5,348,300                   08/094,212                   09/20/94
5,348,303                   08/016,994                   09/20/94
5,348,304                   08/089,478                   09/20/94
5,348,306                   08/109,629                   09/20/94
5,348,307                   08/134,639                   09/20/94
5,348,309                   08/110,016                   09/20/94
5,348,313                   08/020,851                   09/20/94
5,348,320                   07/965,883                   09/20/94
5,348,324                   07/957,210                   09/20/94
5,348,325                   08/029,349                   09/20/94
5,348,327                   08/023,119                   09/20/94
5,348,328                   08/116,698                   09/20/94
5,348,329                   07/849,015                   09/20/94
5,348,333                   08/005,789                   09/20/94
5,348,335                   07/973,715                   09/20/94
5,348,346                   08/094,053                   09/20/94
5,348,355                   07/988,166                   09/20/94
5,348,363                   08/030,583                   09/20/94
5,348,365                   08/125,726                   09/20/94
5,348,366                   08/111,659                   09/20/94
5,348,368                   08/000,380                   09/20/94
5,348,376                   07/871,396                   09/20/94
5,348,377                   08/140,789                   09/20/94
5,348,383                   07/969,118                   09/20/94
5,348,385                   07/918,545                   09/20/94
5,348,391                   08/153,435                   09/20/94
5,348,393                   07/919,039                   09/20/94
5,348,398                   08/177,706                   09/20/94
5,348,400                   08/129,306                   09/20/94
5,348,401                   08/010,030                   09/20/94
5,348,405                   08/105,143                   09/20/94
5,348,422                   08/022,189                   09/20/94
5,348,430                   08/076,350                   09/20/94
5,348,443                   08/104,973                   09/20/94
5,348,451                   07/847,038                   09/20/94
5,348,462                   07/953,663                   09/20/94
5,348,463                   08/074,619                   09/20/94
5,348,465                   07/945,017                   09/20/94
5,348,466                   08/073,960                   09/20/94
5,348,468                   07/787,079                   09/20/94
5,348,469                   08/007,760                   09/20/94
5,348,470                   08/011,232                   09/20/94
5,348,478                   07/955,423                   09/20/94
5,348,480                   08/165,069                   09/20/94
5,348,489                   08/149,281                   09/20/94
5,348,490                   08/183,103                   09/20/94
5,348,494                   08/055,980                   09/20/94
5,348,501                   08/007,618                   09/20/94
5,348,502                   08/155,768                   09/20/94
5,348,507                   08/107,584                   09/20/94
5,348,509                   08/079,898                   09/20/94
5,348,510                   08/000,816                   09/20/94
5,348,511                   08/062,516                   09/20/94
5,348,518                   07/518,210                   09/20/94
5,348,519                   07/934,293                   09/20/94
5,348,523                   07/994,504                   09/20/94
5,348,525                   08/103,569                   09/20/94
5,348,526                   08/111,549                   09/20/94
5,348,528                   08/053,059                   09/20/94
5,348,529                   07/972,996                   09/20/94
5,348,543                   08/053,799                   09/20/94
5,348,551                   08/035,468                   09/20/94
5,348,553                   07/809,334                   09/20/94
5,348,567                   08/054,678                   09/20/94
5,348,570                   08/042,934                   09/20/94
5,348,571                   08/001,791                   09/20/94
5,348,573                   08/067,452                   09/20/94
5,348,575                   08/088,549                   09/20/94
5,348,582                   08/063,716                   09/20/94
5,348,593                   08/156,533                   09/20/94
5,348,599                   08/059,088                   09/20/94
5,348,606                   07/950,967                   09/20/94
5,348,607                   08/020,913                   09/20/94
5,348,608                   08/054,729                   09/20/94
5,348,612                   08/078,043                   09/20/94
5,348,613                   08/151,742                   09/20/94
5,348,621                   08/039,509                   09/20/94
5,348,622                   08/120,413                   09/20/94
5,348,634                   07/665,214                   09/20/94
5,348,637                   08/124,641                   09/20/94
5,348,639                   07/740,999                   09/20/94
5,348,644                   07/612,322                   09/20/94
5,348,647                   08/031,968                   09/20/94
5,348,651                   08/035,670                   09/20/94
5,348,654                   08/112,118                   09/20/94
5,348,657                   08/061,513                   09/20/94
5,348,670                   08/013,510                   09/20/94
5,348,671                   08/007,904                   09/20/94
5,348,681                   08/087,099                   09/20/94
5,348,692                   08/023,066                   09/20/94
5,348,695                   07/974,050                   09/20/94
5,348,697                   08/030,471                   09/20/94
5,348,707                   07/644,141                   09/20/94
5,348,709                   08/066,073                   09/20/94
5,348,712                   08/015,017                   09/20/94
5,348,735                   08/076,422                   09/20/94
5,348,741                   07/944,743                   09/20/94
5,348,751                   07/530,443                   09/20/94
5,348,753                   08/047,186                   09/20/94
5,348,755                   07/847,781                   09/20/94
5,348,757                   08/055,540                   09/20/94
5,348,759                   08/070,772                   09/20/94
5,348,762                   08/062,038                   09/20/94
5,348,769                   08/040,872                   09/20/94
5,348,778                   08/143,279                   09/20/94
5,348,791                   08/071,212                   09/20/94
5,348,797                   08/183,993                   09/20/94
5,348,800                   08/013,210                   09/20/94
5,348,804                   07/714,183                   09/20/94
5,348,806                   07/946,849                   09/20/94
5,348,810                   07/751,559                   09/20/94
5,348,812                   08/129,996                   09/20/94
5,348,837                   08/012,479                   09/20/94
5,348,853                   07/808,463                   09/20/94
5,348,855                   07/772,625                   09/20/94
5,348,861                   07/781,023                   09/20/94
5,348,882                   07/885,878                   09/20/94
5,348,884                   08/101,931                   09/20/94
5,348,885                   08/006,031                   09/20/94
5,348,890                   07/986,040                   09/20/94
5,348,922                   07/793,372                   09/20/94
5,348,928                   08/059,234                   09/20/94
5,348,936                   08/048,651                   09/20/94
5,348,951                   07/755,618                   09/20/94
5,348,955                   08/080,893                   09/20/94
5,348,970                   08/125,432                   09/20/94
5,348,977                   08/184,413                   09/20/94
5,348,978                   07/956,877                   09/20/94
5,348,980                   08/058,698                   09/20/94
5,348,981                   08/125,242                   09/20/94
5,348,983                   08/155,146                   09/20/94
5,348,985                   08/181,944                   09/20/94
5,349,019                   08/116,204                   09/20/94
5,349,025                   07/992,097                   09/20/94
5,349,034                   08/095,050                   09/20/94
5,349,057                   07/772,375                   09/20/94
5,349,061                   08/135,200                   09/20/94
5,349,062                   08/083,814                   09/20/94
5,349,070                   07/971,832                   09/20/94
5,349,072                   08/085,805                   09/20/94
5,349,074                   08/010,149                   09/20/94
5,349,075                   07/630,990                   09/20/94
5,349,079                   08/136,489                   09/20/94
5,349,082                   08/033,935                   09/20/94
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