Notice of Expiration of Patents
Due to Failure to Pay Maintenance Fees
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 April 23, 1997
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Number Serial Number Issue Date
Re. 32,477 06/918,140 08/18/87
(4,512,907) (06/577,257) (04/23/85)
Re. 32,744 07/045,017 09/06/88
(4,513,072) (06/415,466) (04/23/85)
Re. 33,088 06/889,319 10/10/89
(4,513,295) (06/544,325) (04/23/85)
Re. 33,642 07/257,197 07/23/91
(4,512,341) (06/443,473) (04/23/85)
Re. 33,886 07/479,927 04/14/92
(4,822,326) (07/180,948) (04/18/89)
Re. 34,016 07/625,300 08/04/92
(4,821,888) (07/114,576) (04/18/89)
4,512,038 06/251,285 04/23/85
4,512,046 06/472,617 04/23/85
4,512,057 06/605,043 04/23/85
4,512,059 06/521,590 04/23/85
4,512,062 06/451,871 04/23/85
4,512,064 06/570,219 04/23/85
4,512,066 06/239,414 04/23/85
4,512,067 06/591,238 04/23/85
4,512,105 06/577,192 04/23/85
4,512,111 06/436,731 04/23/85
4,512,116 06/502,146 04/23/85
4,512,118 06/554,964 04/23/85
4,512,120 06/351,944 04/23/85
4,512,123 06/459,616 04/23/85
4,512,131 06/538,133 04/23/85
4,512,133 06/348,409 04/23/85
4,512,138 06/354,589 04/23/85
4,512,142 06/552,472 04/23/85
4,512,150 06/518,516 04/23/85
4,512,152 06/529,983 04/23/85
4,512,156 06/495,197 04/23/85
4,512,162 06/573,346 04/23/85
4,512,168 06/242,038 04/23/85
4,512,173 06/512,472 04/23/85
4,512,178 06/479,762 04/23/85
4,512,191 06/455,271 04/23/85
4,512,193 06/426,735 04/23/85
4,512,195 06/516,555 04/23/85
4,512,196 06/538,021 04/23/85
4,512,198 06/636,515 04/23/85
4,512,199 06/482,531 04/23/85
4,512,200 06/556,524 04/23/85
4,512,211 06/475,574 04/23/85
4,512,223 06/452,340 04/23/85
4,512,224 06/481,077 04/23/85
4,512,228 06/444,202 04/23/85
4,512,229 06/631,571 04/23/85
4,512,230 06/488,289 04/23/85
4,512,233 06/552,923 04/23/85
4,512,240 06/499,828 04/23/85
4,512,244 06/554,601 04/23/85
4,512,252 06/362,478 04/23/85
4,512,255 06/472,393 04/23/85
4,512,265 06/366,789 04/23/85
4,512,266 06/594,005 04/23/85
4,512,267 06/573,470 04/23/85
4,512,273 06/514,819 04/23/85
4,512,278 06/522,741 04/23/85
4,512,281 06/529,779 04/23/85
4,512,282 06/547,759 04/23/85
4,512,283 06/549,341 04/23/85
4,512,290 06/494,767 04/23/85
4,512,294 06/576,277 04/23/85
4,512,298 06/438,358 04/23/85
4,512,299 06/560,762 04/23/85
4,512,306 06/512,026 04/23/85
4,512,308 06/425,816 04/23/85
4,512,311 06/588,358 04/23/85
4,512,313 06/500,918 04/23/85
4,512,319 06/554,756 04/23/85
4,512,323 06/573,021 04/23/85
4,512,325 06/588,739 04/23/85
4,512,327 06/583,932 04/23/85
4,512,330 06/460,167 04/23/85
4,512,333 06/496,908 04/23/85
4,512,339 06/257,373 04/23/85
4,512,354 06/517,331 04/23/85
4,512,358 06/526,608 04/23/85
4,512,360 06/445,137 04/23/85
4,512,363 06/411,407 04/23/85
4,512,364 06/462,068 04/23/85
4,512,373 06/492,791 04/23/85
4,512,379 06/404,089 04/23/85
4,512,392 06/458,994 04/23/85
4,512,397 06/562,456 04/23/85
4,512,398 06/512,292 04/23/85
4,512,406 06/385,705 04/23/85
4,512,407 06/561,970 04/23/85
4,512,417 06/575,719 04/23/85
4,512,418 06/515,821 04/23/85
4,512,421 06/538,287 04/23/85
4,512,430 06/515,473 04/23/85
4,512,435 06/475,965 04/23/85
4,512,436 06/510,062 04/23/85
4,512,442 06/595,174 04/23/85
4,512,445 06/413,857 04/23/85
4,512,452 06/283,663 04/23/85
4,512,457 06/496,899 04/23/85
4,512,463 06/576,445 04/23/85
4,512,470 06/571,979 04/23/85
4,512,480 06/522,406 04/23/85
4,512,486 06/428,426 04/23/85
4,512,491 06/570,985 04/23/85
4,512,492 06/560,382 04/23/85
4,512,496 06/636,911 04/23/85
4,512,511 06/566,338 04/23/85
4,512,519 06/432,861 04/23/85
4,512,520 06/493,724 04/23/85
4,512,524 06/551,322 04/23/85
4,512,526 06/645,524 04/23/85
4,512,531 06/544,449 04/23/85
4,512,534 06/407,501 04/23/85
4,512,535 06/591,915 04/23/85
4,512,539 06/523,184 04/23/85
4,512,542 06/426,280 04/23/85
4,512,543 06/424,403 04/23/85
4,512,545 06/391,571 04/23/85
4,512,551 06/505,154 04/23/85
4,512,560 06/419,425 04/23/85
4,512,563 06/436,833 04/23/85
4,512,571 06/429,688 04/23/85
4,512,572 06/509,350 04/23/85
4,512,585 06/594,359 04/23/85
4,512,605 06/498,842 04/23/85
4,512,614 06/419,487 04/23/85
4,512,617 06/586,768 04/23/85
4,512,620 06/468,418 04/23/85
4,512,624 06/323,950 04/23/85
4,512,628 06/499,642 04/23/85
4,512,635 06/337,085 04/23/85
4,512,652 06/525,855 04/23/85
4,512,654 06/534,095 04/23/85
4,512,660 06/484,810 04/23/85
4,512,666 06/583,576 04/23/85
4,512,671 06/452,967 04/23/85
4,512,674 06/404,987 04/23/85
4,512,685 06/300,308 04/23/85
4,512,690 06/550,796 04/23/85
4,512,696 06/510,987 04/23/85
4,512,698 06/465,121 04/23/85
4,512,699 06/495,380 04/23/85
4,512,705 06/495,523 04/23/85
4,512,716 06/430,245 04/23/85
4,512,720 06/484,202 04/23/85
4,512,722 06/543,067 04/23/85
4,512,726 06/347,184 04/23/85
4,512,750 06/483,843 04/23/85
4,512,767 06/480,327 04/23/85
4,512,776 06/565,188 04/23/85
4,512,780 06/549,746 04/23/85
4,512,786 06/486,819 04/23/85
4,512,790 06/369,275 04/23/85
4,512,792 06/512,265 04/23/85
4,512,794 06/507,721 04/23/85
4,512,799 06/575,202 04/23/85
4,512,813 06/482,942 04/23/85
4,512,818 06/616,692 04/23/85
4,512,832 06/389,567 04/23/85
4,512,835 06/501,737 04/23/85
4,512,841 06/596,189 04/23/85
4,512,842 06/574,525 04/23/85
4,512,845 06/510,201 04/23/85
4,512,848 06/577,174 04/23/85
4,512,855 06/633,502 04/23/85
4,512,859 06/453,174 04/23/85
4,512,869 06/610,411 04/23/85
4,512,870 06/557,610 04/23/85
4,512,878 06/467,032 04/23/85
4,512,879 06/515,574 04/23/85
4,512,880 06/489,491 04/23/85
4,512,886 06/542,248 04/23/85
4,512,887 06/443,761 04/23/85
4,512,888 06/394,290 04/23/85
4,512,895 06/433,639 04/23/85
4,512,900 06/561,030 04/23/85
4,512,908 06/510,947 04/23/85
4,512,920 06/575,978 04/23/85
4,512,930 06/371,670 04/23/85
4,512,946 06/529,784 04/23/85
4,512,968 06/555,111 04/23/85
4,512,974 06/447,984 04/23/85
4,512,979 06/341,741 04/23/85
4,512,988 06/585,058 04/23/85
4,512,997 06/552,747 04/23/85
4,513,001 06/477,680 04/23/85
4,513,010 06/495,111 04/23/85
4,513,015 06/347,110 04/23/85
4,513,022 06/614,006 04/23/85
4,513,023 06/468,936 04/23/85
4,513,025 06/377,120 04/23/85
4,513,027 06/578,505 04/23/85
4,513,040 06/488,241 04/23/85
4,513,043 06/433,602 04/23/85
4,513,049 06/488,890 04/23/85
4,513,056 06/478,050 04/23/85
4,513,062 06/589,540 04/23/85
4,513,087 06/462,493 04/23/85
4,513,088 06/480,478 04/23/85
4,513,090 06/281,860 04/23/85
4,513,092 06/594,583 04/23/85
4,513,095 06/483,054 04/23/85
4,513,103 06/544,300 04/23/85
4,513,106 06/554,313 04/23/85
4,513,111 06/473,369 04/23/85
4,513,115 06/512,566 04/23/85
4,513,116 06/481,366 04/23/85
4,513,119 06/487,170 04/23/85
4,513,127 06/650,750 04/23/85
4,513,132 06/480,789 04/23/85
4,513,133 06/579,234 04/23/85
4,513,136 06/484,354 04/23/85
4,513,161 06/626,025 04/23/85
4,513,164 06/579,947 04/23/85
4,513,165 06/620,787 04/23/85
4,513,168 06/602,033 04/23/85
4,513,169 06/515,237 04/23/85
4,513,184 06/532,693 04/23/85
4,513,186 06/452,263 04/23/85
4,513,189 06/390,138 04/23/85
4,513,193 06/447,269 04/23/85
4,513,201 06/515,822 04/23/85
4,513,202 06/378,090 04/23/85
4,513,205 06/465,192 04/23/85
4,513,209 06/348,311 04/23/85
4,513,213 06/439,715 04/23/85
4,513,217 06/559,434 04/23/85
4,513,221 06/352,682 04/23/85
4,513,223 06/395,417 04/23/85
4,513,231 06/464,396 04/23/85
4,513,232 06/498,607 04/23/85
4,513,233 06/564,260 04/23/85
4,513,234 06/388,925 04/23/85
4,513,235 06/460,264 04/23/85
4,513,239 06/472,826 04/23/85
4,513,242 06/429,316 04/23/85
4,513,248 06/462,913 04/23/85
4,513,254 06/495,311 04/23/85
4,513,255 06/461,099 04/23/85
4,513,262 06/531,806 04/23/85
4,513,264 06/448,969 04/23/85
4,513,266 06/435,116 04/23/85
4,513,275 06/490,349 04/23/85
4,513,279 06/558,411 04/23/85
4,513,283 06/445,599 04/23/85
4,513,287 06/411,567 04/23/85
4,513,294 06/398,019 04/23/85
4,513,299 06/562,302 04/23/85
4,513,305 06/446,902 04/23/85
4,513,306 06/453,438 04/23/85
4,513,318 06/429,927 04/23/85
4,513,325 06/357,124 04/23/85
4,513,341 06/516,503 04/23/85
4,513,346 06/488,913 04/23/85
4,513,362 06/488,811 04/23/85
4,513,363 06/350,987 04/23/85
4,513,366 06/475,509 04/23/85
4,513,367 06/246,788 04/23/85
4,513,371 06/402,883 04/23/85
4,513,380 06/415,508 04/23/85
4,513,381 06/385,631 04/23/85
4,513,386 06/442,709 04/23/85
4,513,392 06/381,999 04/23/85
4,513,393 06/383,669 04/23/85
4,513,396 06/508,947 04/23/85
4,513,402 06/287,085 04/23/85
4,513,403 06/405,063 04/23/85
4,513,405 06/436,575 04/23/85
4,513,408 06/384,244 04/23/85
4,513,415 06/363,613 04/23/85
4,513,431 06/385,587 04/23/85
4,513,444 06/514,673 04/23/85
4,513,446 06/465,164 04/23/85
4,513,448 06/522,949 04/23/85
4,821,340 07/153,150 04/18/89
4,821,347 07/149,006 04/18/89
4,821,348 07/158,661 04/18/89
4,821,349 07/145,527 04/18/89
4,821,350 07/022,202 04/18/89
4,821,359 07/057,214 04/18/89
4,821,360 07/147,620 04/18/89
4,821,362 07/010,970 04/18/89
4,821,364 07/187,371 04/18/89
4,821,365 07/086,779 04/18/89
4,821,366 07/189,810 04/18/89
4,821,367 07/187,316 04/18/89
4,821,368 07/093,189 04/18/89
4,821,370 07/028,348 04/18/89
4,821,371 07/072,537 04/18/89
4,821,374 07/030,390 04/18/89
4,821,377 07/175,928 04/18/89
4,821,379 07/176,208 04/18/89
4,821,386 07/030,695 04/18/89
4,821,390 07/168,377 04/18/89
4,821,393 07/055,031 04/18/89
4,821,394 06/542,178 04/18/89
4,821,395 07/172,153 04/18/89
4,821,396 06/784,591 04/18/89
4,821,400 07/177,379 04/18/89
4,821,408 06/938,732 04/18/89
4,821,409 06/684,974 04/18/89
4,821,416 07/082,870 04/18/89
4,821,421 07/057,925 04/18/89
4,821,425 07/122,740 04/18/89
4,821,427 07/182,826 04/18/89
4,821,428 07/115,584 04/18/89
4,821,436 06/551,192 04/18/89
4,821,438 07/107,547 04/18/89
4,821,441 07/148,853 04/18/89
4,821,444 07/126,747 04/18/89
4,821,448 07/217,340 04/18/89
4,821,453 07/015,789 04/18/89
4,821,463 07/132,570 04/18/89
4,821,466 07/152,937 04/18/89
4,821,467 06/872,095 04/18/89
4,821,479 06/637,262 04/18/89
4,821,481 07/175,142 04/18/89
4,821,482 07/065,046 04/18/89
4,821,489 06/428,087 04/18/89
4,821,490 07/000,515 04/18/89
4,821,491 07/217,768 04/18/89
4,821,500 07/123,050 04/18/89
4,821,505 07/023,866 04/18/89
4,821,507 07/055,594 04/18/89
4,821,517 07/046,639 04/18/89
4,821,519 07/067,514 04/18/89
4,821,523 07/176,220 04/18/89
4,821,525 07/186,066 04/18/89
4,821,527 07/070,927 04/18/89
4,821,539 07/199,149 04/18/89
4,821,543 07/208,470 04/18/89
4,821,548 07/092,528 04/18/89
4,821,559 07/112,470 04/18/89
4,821,568 07/116,364 04/18/89
4,821,571 07/017,447 04/18/89
4,821,577 07/065,317 04/18/89
4,821,579 07/207,758 04/18/89
4,821,592 07/180,357 04/18/89
4,821,594 07/205,443 04/18/89
4,821,596 07/154,149 04/18/89
4,821,597 06/378,641 04/18/89
4,821,598 07/116,245 04/18/89
4,821,599 07/097,310 04/18/89
4,821,604 07/058,868 04/18/89
4,821,608 07/176,978 04/18/89
4,821,612 07/147,730 04/18/89
4,821,619 07/166,464 04/18/89
4,821,624 07/161,868 04/18/89
4,821,628 07/145,627 04/18/89
4,821,631 07/183,935 04/18/89
4,821,635 07/107,256 04/18/89
4,821,639 07/084,359 04/18/89
4,821,640 07/181,310 04/18/89
4,821,642 07/150,970 04/18/89
4,821,647 07/168,971 04/18/89
4,821,648 07/130,649 04/18/89
4,821,654 07/112,960 04/18/89
4,821,656 07/076,539 04/18/89
4,821,658 07/117,236 04/18/89
4,821,666 07/129,584 04/18/89
4,821,667 07/156,445 04/18/89
4,821,671 06/749,335 04/18/89
4,821,676 07/152,658 04/18/89
4,821,677 07/114,310 04/18/89
4,821,682 07/077,635 04/18/89
4,821,683 07/111,647 04/18/89
4,821,684 07/094,873 04/18/89
4,821,686 07/155,965 04/18/89
4,821,687 07/080,951 04/18/89
4,821,692 07/147,975 04/18/89
4,821,693 07/131,502 04/18/89
4,821,708 07/021,238 04/18/89
4,821,710 07/072,085 04/18/89
4,821,728 07/150,268 04/18/89
4,821,729 06/905,218 04/18/89
4,821,736 07/171,896 04/18/89
4,821,739 07/133,126 04/18/89
4,821,743 07/087,059 04/18/89
4,821,745 07/031,909 04/18/89
4,821,751 07/106,458 04/18/89
4,821,752 07/067,921 04/18/89
4,821,760 06/655,409 04/18/89
4,821,762 07/185,994 04/18/89
4,821,775 07/252,963 04/18/89
4,821,777 07/056,969 04/18/89
4,821,786 07/092,949 04/18/89
4,821,792 07/020,101 04/18/89
4,821,795 07/111,263 04/18/89
4,821,802 07/239,062 04/18/89
4,821,806 06/904,575 04/18/89
4,821,808 07/152,286 04/18/89
4,821,809 06/632,279 04/18/89
4,821,813 07/036,410 04/18/89
4,821,815 06/866,240 04/18/89
4,821,821 07/242,627 04/18/89
4,821,824 07/152,334 04/18/89
4,821,829 07/080,744 04/18/89
4,821,830 07/103,070 04/18/89
4,821,831 07/164,748 04/18/89
4,821,834 07/125,311 04/18/89
4,821,836 07/222,395 04/18/89
4,821,843 07/169,579 04/18/89
4,821,848 07/181,633 04/18/89
4,821,864 07/151,292 04/18/89
4,821,865 07/048,941 04/18/89
4,821,866 07/138,285 04/18/89
4,821,870 06/913,381 04/18/89
4,821,871 07/144,018 04/18/89
4,821,875 07/155,610 04/18/89
4,821,881 07/069,195 04/18/89
4,821,886 07/171,393 04/18/89
4,821,894 07/112,833 04/18/89
4,821,896 07/172,456 04/18/89
4,821,900 07/170,034 04/18/89
4,821,903 07/184,266 04/18/89
4,821,908 07/092,873 04/18/89
4,821,911 07/092,098 04/18/89
4,821,912 07/057,222 04/18/89
4,821,913 07/179,394 04/18/89
4,821,916 07/044,027 04/18/89
4,821,917 07/055,167 04/18/89
4,821,918 07/045,531 04/18/89
4,821,919 07/039,146 04/18/89
4,821,921 06/943,411 04/18/89
4,821,924 06/877,105 04/18/89
4,821,928 07/101,869 04/18/89
4,821,929 07/157,556 04/18/89
4,821,931 07/061,216 04/18/89
4,821,932 07/182,640 04/18/89
4,821,941 07/085,715 04/18/89
4,821,943 07/215,972 04/18/89
4,821,945 07/068,679 04/18/89
4,821,952 07/150,036 04/18/89
4,821,964 07/150,018 04/18/89
4,821,969 07/202,228 04/18/89
4,821,973 07/112,276 04/18/89
4,821,974 07/111,399 04/18/89
4,821,976 07/192,152 04/18/89
4,821,982 07/035,425 04/18/89
4,821,985 07/185,634 04/18/89
4,821,986 07/151,918 04/18/89
4,821,992 07/191,869 04/18/89
4,821,995 07/225,730 04/18/89
4,821,999 07/146,782 04/18/89
4,822,011 07/112,281 04/18/89
4,822,013 07/127,474 04/18/89
4,822,014 07/085,293 04/18/89
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