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 April 5, 2000
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Serial Issue
Number Number Date
4,734,938 06/815,725 04/05/88
4,734,940 07/018,313 04/05/88
4,734,949 06/833,174 04/05/88
4,734,952 06/865,525 04/05/88
4,734,965 06/944,685 04/05/88
4,734,969 06/919,733 04/05/88
4,734,972 06/819,084 04/05/88
4,734,977 07/030,669 04/05/88
4,734,979 06/945,961 04/05/88
4,734,983 06/903,646 04/05/88
4,734,994 06/944,788 04/05/88
4,735,001 07/042,339 04/05/88
4,735,003 06/930,962 04/05/88
4,735,006 06/836,017 04/05/88
4,735,013 06/854,310 04/05/88
4,735,016 06/763,841 04/05/88
4,735,019 06/794,284 04/05/88
4,735,034 07/091,287 04/05/88
4,735,035 07/017,526 04/05/88
4,735,038 06/795,444 04/05/88
4,735,050 07/068,731 04/05/88
4,735,055 07/061,765 04/05/88
4,735,058 07/076,225 04/05/88
4,735,067 07/041,113 04/05/88
4,735,068 07/025,280 04/05/88
4,735,078 06/882,296 04/05/88
4,735,079 06/880,735 04/05/88
4,735,082 06/885,120 04/05/88
4,735,085 06/898,682 04/05/88
4,735,087 07/004,653 04/05/88
4,735,106 07/018,428 04/05/88
4,735,124 07/083,064 04/05/88
4,735,128 06/826,201 04/05/88
4,735,129 06/500,984 04/05/88
4,735,131 07/008,566 04/05/88
4,735,136 06/945,681 04/05/88
4,735,148 07/014,200 04/05/88
4,735,156 07/000,331 04/05/88
4,735,161 06/920,657 04/05/88
4,735,162 07/090,172 04/05/88
4,735,165 07/017,410 04/05/88
4,735,167 06/943,270 04/05/88
4,735,169 06/903,465 04/05/88
4,735,173 06/861,456 04/05/88
4,735,184 07/057,961 04/05/88
4,735,185 06/873,597 04/05/88
4,735,188 07/037,243 04/05/88
4,735,190 06/688,772 04/05/88
4,735,205 06/831,949 04/05/88
4,735,210 06/751,877 04/05/88
4,735,211 06/824,734 04/05/88
4,735,214 06/903,769 04/05/88
4,735,219 06/848,561 04/05/88
4,735,221 06/886,819 04/05/88
4,735,224 06/895,197 04/05/88
4,735,235 06/902,863 04/05/88
4,735,250 07/065,676 04/05/88
4,735,254 06/879,278 04/05/88
4,735,259 06/912,864 04/05/88
4,735,274 06/800,709 04/05/88
4,735,276 06/946,313 04/05/88
4,735,279 06/927,527 04/05/88
4,735,305 07/012,369 04/05/88
4,735,313 06/752,294 04/05/88
4,735,314 06/897,498 04/05/88
4,735,330 07/020,310 04/05/88
4,735,331 07/034,193 04/05/88
4,735,350 06/876,430 04/05/88
4,735,363 06/863,504 04/05/88
4,735,371 06/886,291 04/05/88
4,735,375 06/875,689 04/05/88
4,735,394 06/945,523 04/05/88
4,735,398 07/038,542 04/05/88
4,735,404 06/923,647 04/05/88
4,735,406 06/868,261 04/05/88
4,735,417 07/066,168 04/05/88
4,735,434 06/858,820 04/05/88
4,735,435 06/871,065 04/05/88
4,735,446 07/023,626 04/05/88
4,735,458 06/852,162 04/05/88
4,735,460 06/890,535 04/05/88
4,735,465 06/865,923 04/05/88
4,735,473 06/860,010 04/05/88
4,735,480 06/799,900 04/05/88
4,735,482 06/712,732 04/05/88
4,735,486 06/718,088 04/05/88
4,735,487 06/797,349 04/05/88
4,735,500 06/845,570 04/05/88
4,735,502 06/933,166 04/05/88
4,735,516 07/017,274 04/05/88
4,735,529 06/944,139 04/05/88
4,735,532 06/946,231 04/05/88
4,735,556 06/838,888 04/05/88
4,735,564 07/063,584 04/05/88
4,735,571 06/800,782 04/05/88
4,735,575 06/915,831 04/05/88
4,735,582 06/935,386 04/05/88
4,735,587 06/828,826 04/05/88
4,735,597 06/796,432 04/05/88
4,735,617 07/019,642 04/05/88
4,735,625 06/775,012 04/05/88
4,735,626 07/070,247 04/05/88
4,735,627 06/936,175 04/05/88
4,735,631 06/920,902 04/05/88
4,735,637 07/020,990 04/05/88
4,735,641 07/026,022 04/05/88
4,735,642 06/914,436 04/05/88
4,735,652 06/931,572 04/05/88
4,735,658 06/850,750 04/05/88
4,735,668 06/910,023 04/05/88
4,735,674 06/939,590 04/05/88
4,735,684 06/933,848 04/05/88
4,735,690 06/860,648 04/05/88
4,735,701 06/855,019 04/05/88
4,735,704 06/864,020 04/05/88
4,735,719 07/014,032 04/05/88
4,735,725 06/886,853 04/05/88
4,735,734 06/910,724 04/05/88
4,735,740 06/915,133 04/05/88
4,735,755 06/832,773 04/05/88
4,735,760 06/898,925 04/05/88
4,735,773 06/939,147 04/05/88
4,735,779 06/845,700 04/05/88
4,735,787 07/085,920 04/05/88
4,735,790 06/937,170 04/05/88
4,735,796 06/731,551 04/05/88
4,735,799 07/003,194 04/05/88
4,735,808 06/723,812 04/05/88
4,735,809 06/769,598 04/05/88
4,735,820 07/050,433 04/05/88
4,735,823 06/907,270 04/05/88
4,735,830 07/012,101 04/05/88
4,735,832 07/018,051 04/05/88
4,735,845 06/774,537 04/05/88
4,735,857 06/883,235 04/05/88
4,735,858 06/886,794 04/05/88
4,735,859 06/903,681 04/05/88
4,735,862 07/046,094 04/05/88
4,735,865 06/871,273 04/05/88
4,735,867 06/805,533 04/05/88
4,735,869 06/925,637 04/05/88
4,735,874 06/914,819 04/05/88
4,735,880 06/852,750 04/05/88
4,735,881 06/883,386 04/05/88
4,735,884 07/018,266 04/05/88
4,735,897 06/729,502 04/05/88
4,735,902 06/788,830 04/05/88
4,735,906 06/675,524 04/05/88
4,735,909 06/918,115 04/05/88
4,735,912 07/057,510 04/05/88
4,735,916 07/013,252 04/05/88
4,735,923 06/896,167 04/05/88
4,735,929 06/932,113 04/05/88
4,735,940 06/793,511 04/05/88
4,735,941 06/946,392 04/05/88
4,735,942 06/869,537 04/05/88
4,735,950 07/032,947 04/05/88
4,735,951 06/790,064 04/05/88
4,735,955 06/827,274 04/05/88
4,735,956 06/775,869 04/05/88
4,735,962 06/916,083 04/05/88
4,735,964 06/862,086 04/05/88
4,735,971 07/012,021 04/05/88
4,735,974 06/808,750 04/05/88
4,735,996 06/898,851 04/05/88
4,736,004 06/867,645 04/05/88
4,736,005 06/737,622 04/05/88
4,736,010 07/035,124 04/05/88
4,736,015 06/435,153 04/05/88
4,736,026 06/879,540 04/05/88
4,736,031 06/852,214 04/05/88
4,736,046 06/812,477 04/05/88
4,736,050 06/916,106 04/05/88
4,736,052 07/011,572 04/05/88
4,736,053 07/003,430 04/05/88
4,736,055 06/851,032 04/05/88
4,736,067 06/647,755 04/05/88
4,736,069 06/913,206 04/05/88
4,736,073 06/828,060 04/05/88
4,736,076 07/027,485 04/05/88
4,736,080 07/021,761 04/05/88
4,736,084 06/908,813 04/05/88
4,736,085 06/642,686 04/05/88
4,736,090 06/872,277 04/05/88
4,736,092 06/720,107 04/05/88
4,736,094 06/717,849 04/05/88
4,736,096 06/821,952 04/05/88
4,736,097 07/009,777 04/05/88
4,736,099 06/908,820 04/05/88
4,736,102 06/887,120 04/05/88
4,736,106 06/916,387 04/05/88
4,736,116 06/864,590 04/05/88
4,736,128 06/941,161 04/05/88
4,736,129 06/867,229 04/05/88
4,736,132 07/096,880 04/05/88
4,736,134 06/678,928 04/05/88
4,736,135 06/875,801 04/05/88
4,736,136 06/874,972 04/05/88
4,736,139 06/798,335 04/05/88
4,736,142 07/070,168 04/05/88
4,736,144 06/937,055 04/05/88
4,736,148 06/914,273 04/05/88
4,736,159 06/800,741 04/05/88
4,736,163 06/756,140 04/05/88
4,736,165 07/039,877 04/05/88
4,736,168 07/043,286 04/05/88
4,736,175 07/014,904 04/05/88
4,736,179 06/829,332 04/05/88
4,736,185 06/924,629 04/05/88
4,736,189 06/916,607 04/05/88
4,736,193 06/944,215 04/05/88
4,736,194 06/792,920 04/05/88
4,736,195 07/017,914 04/05/88
4,736,198 06/737,874 04/05/88
4,736,210 06/919,965 04/05/88
4,736,211 06/882,239 04/05/88
4,736,214 06/755,438 04/05/88
4,736,217 07/044,020 04/05/88
4,736,225 07/001,919 04/05/88
4,736,235 06/898,855 04/05/88
4,736,248 06/904,742 04/05/88
4,736,258 06/890,705 04/05/88
4,736,261 06/764,468 04/05/88
4,736,263 06/766,803 04/05/88
4,736,266 06/737,077 04/05/88
4,736,273 06/911,590 04/05/88
4,736,284 06/947,505 04/05/88
4,736,290 06/873,904 04/05/88
4,736,296 06/685,993 04/05/88
4,736,298 06/839,490 04/05/88
4,736,300 06/648,206 04/05/88
4,736,302 06/742,524 04/05/88
4,736,305 07/070,162 04/05/88
4,736,306 06/728,367 04/05/88
4,736,313 06/702,511 04/05/88
4,736,321 06/859,592 04/05/88
4,736,323 06/396,683 04/05/88
4,736,326 06/835,264 04/05/88
4,736,339 06/808,975 04/05/88
4,736,343 06/929,370 04/05/88
4,736,347 07/007,490 04/05/88
4,736,352 06/664,868 04/05/88
4,736,353 06/828,353 04/05/88
4,736,366 06/828,911 04/05/88
4,736,376 06/791,321 04/05/88
4,736,377 06/828,184 04/05/88
4,736,384 06/938,210 04/05/88
4,736,388 07/065,437 04/05/88
4,736,395 06/857,016 04/05/88
4,736,410 06/783,682 04/05/88
4,736,411 06/945,893 04/05/88
4,736,412 06/942,662 04/05/88
4,736,414 06/659,762 04/05/88
4,736,415 06/752,087 04/05/88
4,736,423 06/823,151 04/05/88
4,736,432 06/807,074 04/05/88
4,736,434 07/002,289 04/05/88
4,736,436 06/721,571 04/05/88
4,736,438 06/819,572 04/05/88
4,736,441 06/905,155 04/05/88
4,736,446 06/717,751 04/05/88
4,736,456 06/948,346 04/05/88
4,736,457 06/838,507 04/05/88
4,736,464 06/780,307 04/05/88
PATENTS WHICH EXPIRED ON March 31, 2000
DUE TO FAILURE TO PAY MAINTENANCE FEES
5,099,529 07/678,644 03/31/92
5,099,530 07/603,026 03/31/92
5,099,534 07/471,160 03/31/92
5,099,542 07/559,470 03/31/92
5,099,552 07/391,346 03/31/92
5,099,560 07/646,235 03/31/92
5,099,562 07/663,405 03/31/92
5,099,565 07/535,495 03/31/92
5,099,569 07/728,571 03/31/92
5,099,570 07/722,636 03/31/92
5,099,571 07/695,465 03/31/92
5,099,576 07/574,049 03/31/92
5,099,579 07/651,955 03/31/92
5,099,581 07/699,432 03/31/92
5,099,582 07/710,601 03/31/92
5,099,588 07/590,506 03/31/92
5,099,590 07/575,121 03/31/92
5,099,591 07/602,674 03/31/92
5,099,592 07/650,534 03/31/92
5,099,594 07/430,625 03/31/92
5,099,595 07/533,585 03/31/92
5,099,597 07/653,381 03/31/92
5,099,605 07/643,095 03/31/92
5,099,607 07/612,502 03/31/92
5,099,611 07/561,271 03/31/92
5,099,620 07/656,581 03/31/92
5,099,625 07/427,857 03/31/92
5,099,639 07/647,762 03/31/92
5,099,641 07/519,885 03/31/92
5,099,650 07/515,055 03/31/92
5,099,653 07/746,921 03/31/92
5,099,658 07/611,226 03/31/92
5,099,674 07/578,584 03/31/92
5,099,682 07/491,827 03/31/92
5,099,685 07/565,802 03/31/92
5,099,687 07/632,317 03/31/92
5,099,688 07/675,356 03/31/92
5,099,691 07/462,032 03/31/92
5,099,693 07/597,092 03/31/92
5,099,696 07/457,206 03/31/92
5,099,700 07/459,280 03/31/92
5,099,707 07/477,872 03/31/92
5,099,721 07/590,167 03/31/92
5,099,726 07/676,295 03/31/92
5,099,728 07/590,140 03/31/92
5,099,732 07/599,115 03/31/92
5,099,736 07/607,531 03/31/92
5,099,742 07/445,421 03/31/92
5,099,746 07/659,394 03/31/92
5,099,747 07/621,034 03/31/92
5,099,753 07/578,492 03/31/92
5,099,754 07/534,762 03/31/92
5,099,755 07/663,721 03/31/92
5,099,758 07/503,617 03/31/92
5,099,762 07/623,286 03/31/92
5,099,763 07/714,846 03/31/92
5,099,766 07/567,633 03/31/92
5,099,767 07/443,715 03/31/92
5,099,768 07/714,331 03/31/92
5,099,774 07/578,885 03/31/92
5,099,779 07/596,688 03/31/92
5,099,780 07/578,423 03/31/92
5,099,781 07/629,078 03/31/92
5,099,796 07/705,705 03/31/92
5,099,801 07/602,306 03/31/92
5,099,804 07/751,400 03/31/92
5,099,805 07/580,081 03/31/92
5,099,806 07/725,606 03/31/92
5,099,810 07/573,191 03/31/92
5,099,814 07/439,295 03/31/92
5,099,816 07/571,880 03/31/92
5,099,817 07/622,237 03/31/92
5,099,819 07/416,037 03/31/92
5,099,822 07/652,028 03/31/92
5,099,829 07/514,234 03/31/92
5,099,835 07/528,248 03/31/92
5,099,837 07/590,469 03/31/92
5,099,844 07/579,970 03/31/92
5,099,862 07/505,327 03/31/92
5,099,865 07/620,857 03/31/92
5,099,866 07/342,995 03/31/92
5,099,869 07/619,436 03/31/92
5,099,874 07/603,431 03/31/92
5,099,876 07/633,869 03/31/92
5,099,877 07/540,175 03/31/92
5,099,878 07/699,215 03/31/92
5,099,886 07/474,023 03/31/92
5,099,890 07/661,051 03/31/92
5,099,892 07/624,437 03/31/92
5,099,893 07/624,430 03/31/92
5,099,910 07/641,504 03/31/92
5,099,915 07/510,186 03/31/92
5,099,920 07/539,997 03/31/92
5,099,931 07/664,496 03/31/92
5,099,932 07/631,876 03/31/92
5,099,933 07/406,764 03/31/92
5,099,939 07/499,542 03/31/92
5,099,940 07/575,011 03/31/92
5,099,941 07/701,218 03/31/92
5,099,943 07/619,954 03/31/92
5,099,944 07/516,081 03/31/92
5,099,946 07/559,942 03/31/92
5,099,947 07/576,874 03/31/92
5,099,949 07/489,317 03/31/92
5,099,950 07/643,565 03/31/92
5,099,951 07/709,192 03/31/92
5,099,954 07/612,704 03/31/92
5,099,955 07/624,880 03/31/92
5,099,959 07/259,409 03/31/92
5,099,960 07/564,474 03/31/92
5,099,962 07/583,324 03/31/92
5,099,963 07/597,139 03/31/92
5,099,967 07/376,831 03/31/92
5,099,968 07/701,818 03/31/92
5,099,970 07/698,462 03/31/92
5,099,975 07/490,762 03/31/92
5,099,976 07/600,571 03/31/92
5,099,980 07/553,076 03/31/92
5,099,984 07/543,866 03/31/92
5,099,986 07/654,539 03/31/92
5,099,987 07/499,361 03/31/92
5,099,990 07/541,508 03/31/92
5,099,993 07/611,449 03/31/92
5,099,998 07/525,362 03/31/92
5,100,005 07/392,665 03/31/92
5,100,015 07/726,369 03/31/92
5,100,019 07/660,395 03/31/92
5,100,030 07/526,445 03/31/92
5,100,033 07/580,953 03/31/92
5,100,049 07/724,084 03/31/92
5,100,054 07/574,483 03/31/92
5,100,055 07/407,571 03/31/92
5,100,057 07/503,310 03/31/92
5,100,064 07/488,205 03/31/92
5,100,066 07/598,243 03/31/92
5,100,071 07/498,283 03/31/92
5,100,079 07/521,392 03/31/92
5,100,080 07/508,986 03/31/92
5,100,085 07/458,844 03/31/92
5,100,088 07/585,071 03/31/92
5,100,090 07/685,726 03/31/92
5,100,100 07/581,640 03/31/92
5,100,103 07/649,227 03/31/92
5,100,115 07/157,040 03/31/92
5,100,117 07/680,166 03/31/92
5,100,120 07/499,429 03/31/92
5,100,128 07/631,095 03/31/92
5,100,133 07/741,622 03/31/92
5,100,134 07/425,122 03/31/92
5,100,135 07/745,550 03/31/92
5,100,140 07/583,938 03/31/92
5,100,141 07/710,505 03/31/92
5,100,149 07/648,026 03/31/92
5,100,150 07/650,465 03/31/92
5,100,155 07/622,582 03/31/92
5,100,166 07/663,271 03/31/92
5,100,168 07/680,897 03/31/92
5,100,170 07/643,755 03/31/92
5,100,178 07/519,401 03/31/92
5,100,184 07/658,067 03/31/92
5,100,186 07/649,335 03/31/92
5,100,187 07/486,524 03/31/92
5,100,189 07/542,557 03/31/92
5,100,192 07/614,718 03/31/92
5,100,196 07/487,924 03/31/92
5,100,197 07/716,743 03/31/92
5,100,199 07/652,861 03/31/92
5,100,201 07/586,231 03/31/92
5,100,211 07/611,575 03/31/92
5,100,232 07/609,366 03/31/92
5,100,235 07/557,281 03/31/92
5,100,236 06/701,891 03/31/92
5,100,239 07/636,552 03/31/92
5,100,244 07/564,699 03/31/92
5,100,245 07/600,786 03/31/92
5,100,285 07/512,662 03/31/92
5,100,288 07/538,985 03/31/92
5,100,290 07/486,105 03/31/92
5,100,292 07/495,066 03/31/92
5,100,298 07/489,101 03/31/92
5,100,300 07/635,233 03/31/92
5,100,303 07/434,909 03/31/92
5,100,309 07/525,095 03/31/92
5,100,314 07/641,005 03/31/92
5,100,317 07/582,968 03/31/92
5,100,327 07/636,210 03/31/92
5,100,328 07/468,566 03/31/92
5,100,340 07/727,724 03/31/92
5,100,347 07/346,876 03/31/92
5,100,359 07/546,444 03/31/92
5,100,363 07/580,555 03/31/92
5,100,366 07/330,742 03/31/92
5,100,376 07/509,306 03/31/92
5,100,389 07/642,175 03/31/92
5,100,392 07/447,635 03/31/92
5,100,398 07/225,708 03/31/92
5,100,400 07/438,693 03/31/92
5,100,404 07/577,366 03/31/92
5,100,406 07/607,573 03/31/92
5,100,412 07/411,452 03/31/92
5,100,415 07/594,102 03/31/92
5,100,419 07/611,439 03/31/92
5,100,421 07/650,778 03/31/92
5,100,425 07/407,192 03/31/92
5,100,429 07/424,660 03/31/92
5,100,431 07/589,046 03/31/92
5,100,441 07/671,477 03/31/92
5,100,444 07/667,171 03/31/92
5,100,446 07/637,688 03/31/92
5,100,447 07/575,256 03/31/92
5,100,473 07/210,837 03/31/92
5,100,477 07/352,591 03/31/92
5,100,480 07/606,853 03/31/92
5,100,486 07/563,896 03/31/92
5,100,487 07/664,346 03/31/92
5,100,500 07/652,587 03/31/92
5,100,510 07/439,899 03/31/92
5,100,511 07/651,112 03/31/92
5,100,514 07/663,439 03/31/92
5,100,520 07/474,145 03/31/92
5,100,522 07/637,148 03/31/92
5,100,523 07/628,034 03/31/92
5,100,526 07/645,414 03/31/92
5,100,529 07/702,171 03/31/92
5,100,533 07/607,952 03/31/92
5,100,534 07/609,553 03/31/92
5,100,537 07/529,901 03/31/92
5,100,539 07/458,307 03/31/92
5,100,542 07/658,880 03/31/92
5,100,546 07/604,169 03/31/92
5,100,558 07/637,092 03/31/92
5,100,562 07/621,276 03/31/92
5,100,565 07/703,414 03/31/92
5,100,566 07/650,115 03/31/92
5,100,569 07/621,163 03/31/92
5,100,573 07/440,214 03/31/92
5,100,575 07/474,194 03/31/92
5,100,579 07/418,341 03/31/92
5,100,580 07/719,676 03/31/92
5,100,584 07/629,147 03/31/92
5,100,587 07/634,655 03/31/92
5,100,590 07/420,949 03/31/92
5,100,595 07/738,782 03/31/92
5,100,597 07/464,289 03/31/92
5,100,599 07/366,630 03/31/92
5,100,601 07/526,296 03/31/92
5,100,606 07/595,774 03/31/92
5,100,607 07/400,140 03/31/92
5,100,610 07/616,444 03/31/92
5,100,615 07/571,865 03/31/92
5,100,616 07/552,821 03/31/92
5,100,624 07/532,777 03/31/92
5,100,627 07/443,287 03/31/92
5,100,633 07/604,322 03/31/92
5,100,641 07/310,259 03/31/92
5,100,642 07/626,209 03/31/92
5,100,647 07/591,821 03/31/92
5,100,649 07/613,143 03/31/92
5,100,654 07/334,839 03/31/92
5,100,655 07/647,206 03/31/92
5,100,657 07/517,290 03/31/92
5,100,685 07/696,210 03/31/92
5,100,687 07/566,643 03/31/92
5,100,697 07/201,311 03/31/92
5,100,704 07/649,915 03/31/92
5,100,708 07/707,192 03/31/92
5,100,712 07/410,610 03/31/92
5,100,716 07/453,922 03/31/92
5,100,717 07/557,719 03/31/92
5,100,718 07/583,935 03/31/92
5,100,734 07/582,163 03/31/92
5,100,736 07/660,364 03/31/92
5,100,737 07/610,139 03/31/92
5,100,744 07/713,314 03/31/92
5,100,750 07/334,156 03/31/92
5,100,763 07/494,917 03/31/92
5,100,780 07/359,180 03/31/92
5,100,782 07/458,648 03/31/92
5,100,783 07/333,831 03/31/92
5,100,787 07/559,047 03/31/92
5,100,790 07/658,742 03/31/92
5,100,791 07/642,268 03/31/92
5,100,802 07/446,273 03/31/92
5,100,803 07/323,733 03/31/92
5,100,807 07/110,155 03/31/92
5,100,818 07/637,423 03/31/92
5,100,822 07/606,568 03/31/92
5,100,823 07/161,925 03/31/92
5,100,834 07/671,227 03/31/92
5,100,837 07/566,807 03/31/92
5,100,843 07/530,597 03/31/92
5,100,848 07/696,717 03/31/92
5,100,853 07/538,993 03/31/92
5,100,868 07/640,261 03/31/92
5,100,878 07/519,833 03/31/92
5,100,881 07/561,065 03/31/92
5,100,882 07/541,656 03/31/92
5,100,884 07/428,481 03/31/92
5,100,888 07/549,574 03/31/92
5,100,890 07/411,256 03/31/92
5,100,892 07/613,182 03/31/92
5,100,895 07/578,054 03/31/92
5,100,902 07/604,789 03/31/92
5,100,909 07/635,569 03/31/92
5,100,918 07/593,784 03/31/92
5,100,923 07/606,313 03/31/92
5,100,931 07/491,993 03/31/92
5,100,936 07/444,955 03/31/92
5,100,937 07/575,554 03/31/92
5,100,938 07/647,955 03/31/92
5,100,939 07/647,954 03/31/92
5,100,940 07/747,774 03/31/92
5,100,948 07/545,118 03/31/92
5,100,957 07/734,015 03/31/92
5,100,958 07/342,124 03/31/92
5,100,959 07/531,164 03/31/92
5,100,961 07/676,001 03/31/92
5,100,962 07/622,153 03/31/92
5,100,964 07/666,314 03/31/92
5,100,966 07/390,593 03/31/92
5,100,968 07/455,524 03/31/92
5,100,975 07/686,758 03/31/92
5,100,977 07/693,268 03/31/92
5,100,979 07/624,970 03/31/92
5,100,986 07/606,590 03/31/92
5,100,990 07/479,254 03/31/92
5,100,995 07/581,498 03/31/92
5,100,996 07/414,257 03/31/92
5,101,009 07/661,998 03/31/92
5,101,014 07/308,864 03/31/92
5,101,023 07/415,241 03/31/92
5,101,025 07/404,326 03/31/92
5,101,027 07/628,523 03/31/92
5,101,029 07/504,977 03/31/92
5,101,036 07/586,398 03/31/92
5,101,037 07/750,361 03/31/92
5,101,041 07/343,472 03/31/92
5,101,048 07/423,958 03/31/92
5,101,049 07/569,540 03/31/92
5,101,053 07/462,558 03/31/92
5,101,057 07/562,320 03/31/92
5,101,063 07/503,779 03/31/92
5,101,066 07/441,102 03/31/92
5,101,075 07/594,266 03/31/92
5,101,076 07/700,267 03/31/92
5,101,078 07/488,820 03/31/92
5,101,086 07/603,150 03/31/92
5,101,093 07/630,812 03/31/92
5,101,096 07/419,727 03/31/92
5,101,097 07/534,726 03/31/92
5,101,098 07/524,726 03/31/92
5,101,104 07/590,468 03/31/92
5,101,105 07/608,435 03/31/92
5,101,106 07/679,118 03/31/92
5,101,109 07/597,021 03/31/92
5,101,112 07/503,013 03/31/92
5,101,137 07/377,690 03/31/92
5,101,138 07/628,142 03/31/92
5,101,147 07/582,852 03/31/92
5,101,151 07/544,722 03/31/92
5,101,154 07/612,175 03/31/92
5,101,166 07/468,263 03/31/92
5,101,167 07/605,760 03/31/92
5,101,172 07/630,474 03/31/92
5,101,189 07/524,511 03/31/92
5,101,191 07/605,009 03/31/92
5,101,194 07/564,380 03/31/92
5,101,195 07/414,112 03/31/92
5,101,204 07/499,015 03/31/92
5,101,207 07/626,544 03/31/92
5,101,232 07/747,041 03/31/92
5,101,241 07/615,056 03/31/92
5,101,242 07/481,255 03/31/92
5,101,246 07/444,952 03/31/92
5,101,247 07/515,595 03/31/92
5,101,248 07/658,699 03/31/92
5,101,257 07/724,285 03/31/92
5,101,259 07/226,472 03/31/92
5,101,264 07/329,566 03/31/92
5,101,265 07/574,784 03/31/92
5,101,267 07/390,073 03/31/92
5,101,269 07/584,970 03/31/92
5,101,270 07/627,155 03/31/92
5,101,287 07/557,092 03/31/92
5,101,288 07/505,222 03/31/92
5,101,294 07/502,316 03/31/92
5,101,298 07/662,844 03/31/92
5,101,302 07/528,004 03/31/92
5,101,306 07/664,862 03/31/92
5,101,308 07/412,621 03/31/92
5,101,310 07/706,566 03/31/92
5,101,319 07/504,330 03/31/92
5,101,328 07/734,756 03/31/92
5,101,329 07/466,106 03/31/92
5,101,334 07/515,998 03/31/92
5,101,338 07/343,886 03/31/92
5,101,345 07/277,369 03/31/92
5,101,346 07/413,068 03/31/92
5,101,358 07/560,573 03/31/92
5,101,361 07/414,811 03/31/92
5,101,373 07/440,431 03/31/92
5,101,374 07/196,402 03/31/92
5,101,382 07/603,553 03/31/92
5,101,396 07/589,597 03/31/92
5,101,397 07/400,672 03/31/92
5,101,405 07/251,491 03/31/92
5,101,409 07/418,297 03/31/92
5,101,410 07/395,796 03/31/92
5,101,412 07/625,785 03/31/92
5,101,422 07/607,038 03/31/92
5,101,440 07/404,699 03/31/92
5,101,452 07/628,827 03/31/92
5,101,468 07/681,724 03/31/92
5,101,472 07/593,426 03/31/92
5,101,473 07/730,392 03/31/92
5,101,477 07/481,071 03/31/92
5,101,480 07/349,370 03/31/92
5,101,489 07/318,639 03/31/92
5,101,491 07/146,672 03/31/92
5,101,510 07/447,378 03/31/92
PATENTS WHICH EXPIRED ON April 2, 2000
DUE TO FAILURE TO PAY MAINTENANCE FEES
5,502,842 08/338,240 04/02/96
5,502,844 08/410,681 04/02/96
5,502,847 08/369,461 04/02/96
5,502,849 08/254,510 04/02/96
5,502,850 08/339,773 04/02/96
5,502,856 08/256,488 04/02/96
5,502,865 08/442,692 04/02/96
5,502,868 08/262,155 04/02/96
5,502,873 08/355,086 04/02/96
5,502,876 08/309,506 04/02/96
5,502,894 08/462,208 04/02/96
5,502,897 08/252,599 04/02/96
5,502,898 08/342,040 04/02/96
5,502,900 08/444,304 04/02/96
5,502,903 08/237,790 04/02/96
5,502,912 08/220,217 04/02/96
5,502,922 08/237,624 04/02/96
5,502,923 08/427,810 04/02/96
5,502,927 08/315,694 04/02/96
5,502,928 08/281,224 04/02/96
5,502,935 08/276,414 04/02/96
5,502,947 08/329,573 04/02/96
5,502,948 08/237,007 04/02/96
5,502,952 08/338,870 04/02/96
5,502,954 08/181,238 04/02/96
5,502,955 08/427,207 04/02/96
5,502,959 08/295,682 04/02/96
5,502,965 08/374,322 04/02/96
5,502,981 08/406,365 04/02/96
5,503,009 08/367,763 04/02/96
5,503,019 07/905,812 04/02/96
5,503,021 08/280,216 04/02/96
5,503,023 07/838,239 04/02/96
5,503,026 08/248,000 04/02/96
5,503,037 08/337,138 04/02/96
5,503,047 08/372,306 04/02/96
5,503,062 08/177,609 04/02/96
5,503,067 08/346,614 04/02/96
5,503,076 08/161,101 04/02/96
5,503,079 08/122,536 04/02/96
5,503,089 08/171,092 04/02/96
5,503,090 08/036,919 04/02/96
5,503,091 08/186,757 04/02/96
5,503,095 08/337,738 04/02/96
5,503,097 08/292,976 04/02/96
5,503,098 08/146,031 04/02/96
5,503,102 08/344,070 04/02/96
5,503,108 08/252,593 04/02/96
5,503,110 08/411,320 04/02/96
5,503,119 08/490,585 04/02/96
5,503,130 08/337,176 04/02/96
5,503,135 08/258,795 04/02/96
5,503,137 08/263,126 04/02/96
5,503,150 08/208,553 04/02/96
5,503,152 08/314,424 04/02/96
5,503,168 08/337,102 04/02/96
5,503,169 08/293,505 04/02/96
5,503,170 07/834,589 04/02/96
5,503,172 08/386,530 04/02/96
5,503,178 08/342,335 04/02/96
5,503,182 08/354,032 04/02/96
5,503,183 08/478,896 04/02/96
5,503,186 08/300,657 04/02/96
5,503,189 08/440,922 04/02/96
5,503,198 08/324,023 04/02/96
5,503,202 08/426,975 04/02/96
5,503,209 08/239,538 04/02/96
5,503,211 08/238,911 04/02/96
5,503,212 08/391,114 04/02/96
5,503,214 08/222,541 04/02/96
5,503,219 08/382,679 04/02/96
5,503,228 08/349,253 04/02/96
5,503,231 08/192,662 04/02/96
5,503,235 08/345,896 04/02/96
5,503,238 08/313,157 04/02/96
5,503,244 08/190,192 04/02/96
5,503,252 08/438,796 04/02/96
5,503,253 08/344,921 04/02/96
5,503,269 08/422,716 04/02/96
5,503,276 08/292,252 04/02/96
5,503,283 08/339,082 04/02/96
5,503,290 08/344,975 04/02/96
5,503,294 08/113,198 04/02/96
5,503,296 08/278,507 04/02/96
5,503,298 08/342,762 04/02/96
5,503,299 08/276,521 04/02/96
5,503,301 08/229,196 04/02/96
5,503,304 08/401,589 04/02/96
5,503,309 08/255,278 04/02/96
5,503,312 08/372,989 04/02/96
5,503,313 08/334,508 04/02/96
5,503,325 08/319,829 04/02/96
5,503,326 08/500,546 04/02/96
5,503,327 08/361,743 04/02/96
5,503,329 08/348,913 04/02/96
5,503,332 08/056,962 04/02/96
5,503,336 08/275,037 04/02/96
5,503,337 08/512,560 04/02/96
5,503,343 08/158,298 04/02/96
5,503,350 08/145,204 04/02/96
5,503,351 08/300,757 04/02/96
5,503,353 08/347,708 04/02/96
5,503,355 08/332,764 04/02/96
5,503,359 08/255,169 04/02/96
5,503,371 08/343,060 04/02/96
5,503,374 08/248,695 04/02/96
5,503,377 08/107,852 04/02/96
5,503,381 08/296,011 04/02/96
5,503,383 08/266,051 04/02/96
5,503,386 08/284,424 04/02/96
5,503,387 08/284,401 04/02/96
5,503,389 08/044,702 04/02/96
5,503,391 08/285,212 04/02/96
5,503,393 08/333,763 04/02/96
5,503,394 08/310,400 04/02/96
5,503,395 08/344,857 04/02/96
5,503,400 08/465,930 04/02/96
5,503,403 08/214,198 04/02/96
5,503,411 08/407,200 04/02/96
5,503,412 08/093,738 04/02/96
5,503,422 08/287,220 04/02/96
5,503,430 08/232,752 04/02/96
5,503,437 08/323,489 04/02/96
5,503,440 08/187,619 04/02/96
5,503,442 08/421,678 04/02/96
5,503,443 08/491,408 04/02/96
5,503,445 08/411,903 04/02/96
5,503,446 08/232,226 04/02/96
5,503,447 08/178,730 04/02/96
5,503,448 08/282,325 04/02/96
5,503,454 08/139,511 04/02/96
5,503,455 08/251,379 04/02/96
5,503,456 08/328,860 04/02/96
5,503,457 08/368,841 04/02/96
5,503,460 08/406,561 04/02/96
5,503,466 08/189,847 04/02/96
5,503,468 08/264,444 04/02/96
5,503,470 08/302,323 04/02/96
5,503,475 08/270,415 04/02/96
5,503,479 08/166,020 04/02/96
5,503,480 08/327,797 04/02/96
5,503,485 08/235,323 04/02/96
5,503,497 08/308,608 04/02/96
5,503,502 08/394,009 04/02/96
5,503,505 08/226,884 04/02/96
5,503,517 08/177,371 04/02/96
5,503,519 08/182,337 04/02/96
5,503,525 08/234,653 04/02/96
5,503,528 08/173,765 04/02/96
5,503,534 08/405,130 04/02/96
5,503,539 08/260,990 04/02/96
5,503,543 08/314,983 04/02/96
5,503,550 08/100,487 04/02/96
5,503,551 08/463,933 04/02/96
5,503,553 08/426,209 04/02/96
5,503,556 08/355,858 04/02/96
5,503,568 08/304,750 04/02/96
5,503,574 08/254,865 04/02/96
5,503,579 08/368,100 04/02/96
5,503,581 08/368,596 04/02/96
5,503,586 08/371,106 04/02/96
5,503,587 08/344,022 04/02/96
5,503,599 08/328,042 04/02/96
5,503,600 08/341,385 04/02/96
5,503,601 07/941,535 04/02/96
5,503,606 07/822,423 04/02/96
5,503,608 08/490,671 04/02/96
5,503,609 08/302,211 04/02/96
5,503,618 08/319,447 04/02/96
5,503,620 08/269,527 04/02/96
5,503,622 08/467,742 04/02/96
5,503,629 08/247,219 04/02/96
5,503,633 08/291,191 04/02/96
5,503,635 08/151,614 04/02/96
5,503,639 08/383,637 04/02/96
5,503,648 08/302,848 04/02/96
5,503,651 08/438,739 04/02/96
5,503,655 08/200,214 04/02/96
5,503,658 08/324,041 04/02/96
5,503,660 08/252,518 04/02/96
5,503,668 08/278,668 04/02/96
5,503,669 08/182,265 04/02/96
5,503,674 08/230,322 04/02/96
5,503,675 08/163,854 04/02/96
5,503,680 08/211,512 04/02/96
5,503,682 08/232,274 04/02/96
5,503,686 08/402,893 04/02/96
5,503,693 08/342,221 04/02/96
5,503,694 08/377,801 04/02/96
5,503,699 08/423,785 04/02/96
5,503,706 08/116,795 04/02/96
5,503,711 08/259,513 04/02/96
5,503,717 08/259,001 04/02/96
5,503,720 08/355,059 04/02/96
5,503,734 08/367,670 04/02/96
5,503,736 08/234,057 04/02/96
5,503,739 08/526,366 04/02/96
5,503,743 08/060,006 04/02/96
5,503,758 08/313,508 04/02/96
5,503,760 08/331,534 04/02/96
5,503,762 08/367,197 04/02/96
5,503,765 08/290,313 04/02/96
5,503,771 08/189,278 04/02/96
5,503,773 08/303,081 04/02/96
5,503,789 08/222,445 04/02/96
5,503,798 08/228,684 04/02/96
5,503,809 08/049,567 04/02/96
5,503,817 06/819,437 04/02/96
5,503,826 08/330,363 04/02/96
5,503,836 07/568,492 04/02/96
5,503,842 08/260,621 04/02/96
5,503,843 08/231,413 04/02/96
5,503,850 08/352,975 04/02/96
5,503,859 08/137,612 04/02/96
5,503,861 08/208,228 04/02/96
5,503,866 08/373,546 04/02/96
5,503,872 08/209,917 04/02/96
5,503,892 08/323,903 04/02/96
5,503,898 08/229,944 04/02/96
5,503,929 08/238,005 04/02/96
5,503,939 08/338,465 04/02/96
5,503,952 08/404,741 04/02/96
5,503,985 08/179,749 04/02/96
5,503,986 08/241,776 04/02/96
5,503,990 08/302,518 04/02/96
5,503,992 08/061,314 04/02/96
5,504,008 08/274,606 04/02/96
5,504,009 08/182,109 04/02/96
5,504,014 08/090,632 04/02/96
5,504,048 08/071,438 04/02/96
5,504,056 08/175,420 04/02/96
5,504,058 08/230,449 04/02/96
5,504,066 08/318,863 04/02/96
5,504,068 07/975,548 04/02/96
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