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 August 27, 1997
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Number Serial Number Issue Date
4,536,892 06/602,850 08/27/85
4,536,897 06/511,849 08/27/85
4,536,899 06/586,326 08/27/85
4,536,907 06/554,797 08/27/85
4,536,912 06/550,942 08/27/85
4,536,914 06/587,227 08/27/85
4,536,919 06/476,799 08/27/85
4,536,923 06/572,615 08/27/85
4,536,925 06/540,972 08/27/85
4,536,928 06/552,651 08/27/85
4,536,931 06/362,268 08/27/85
4,536,940 06/617,265 08/27/85
4,536,941 06/470,654 08/27/85
4,536,944 06/454,315 08/27/85
4,536,949 06/609,441 08/27/85
4,536,952 06/589,405 08/27/85
4,536,959 06/433,782 08/27/85
4,536,963 06/643,225 08/27/85
4,536,981 06/680,353 08/27/85
4,536,988 06/575,331 08/27/85
4,536,993 06/473,513 08/27/85
4,536,995 06/623,354 08/27/85
4,537,007 06/459,968 08/27/85
4,537,008 06/556,794 08/27/85
4,537,010 06/459,978 08/27/85
4,537,012 06/546,744 08/27/85
4,537,020 06/688,905 08/27/85
4,537,021 06/618,974 08/27/85
4,537,024 06/418,019 08/27/85
4,537,025 06/624,220 08/27/85
4,537,032 06/486,498 08/27/85
4,537,041 06/597,751 08/27/85
4,537,046 06/625,894 08/27/85
4,537,050 06/669,445 08/27/85
4,537,053 06/442,444 08/27/85
4,537,062 06/543,434 08/27/85
4,537,066 06/541,314 08/27/85
4,537,067 06/535,281 08/27/85
4,537,073 06/563,953 08/27/85
4,537,076 06/571,163 08/27/85
4,537,090 06/562,772 08/27/85
4,537,093 06/545,833 08/27/85
4,537,100 06/584,512 08/27/85
4,537,103 06/530,579 08/27/85
4,537,113 06/414,681 08/27/85
4,537,114 06/610,475 08/27/85
4,537,118 06/506,645 08/27/85
4,537,126 06/436,679 08/27/85
4,537,131 06/497,222 08/27/85
4,537,154 06/520,928 08/27/85
4,537,168 06/616,634 08/27/85
4,537,171 06/583,265 08/27/85
4,537,172 06/544,416 08/27/85
4,537,177 06/490,664 08/27/85
4,537,179 06/549,015 08/27/85
4,537,182 06/460,779 08/27/85
4,537,196 06/333,088 08/27/85
4,537,203 06/623,549 08/27/85
4,537,212 06/560,095 08/27/85
4,537,225 06/516,726 08/27/85
4,537,226 06/534,387 08/27/85
4,537,231 06/527,294 08/27/85
4,537,238 06/468,624 08/27/85
4,537,252 06/572,737 08/27/85
4,537,253 06/480,863 08/27/85
4,537,271 06/498,512 08/27/85
4,537,275 06/454,546 08/27/85
4,537,277 06/554,703 08/27/85
4,537,281 06/659,141 08/27/85
4,537,284 06/386,229 08/27/85
4,537,300 06/485,169 08/27/85
4,537,317 06/603,010 08/27/85
4,537,323 06/568,995 08/27/85
4,537,325 06/646,027 08/27/85
4,537,326 06/560,844 08/27/85
4,537,337 06/642,882 08/27/85
4,537,338 06/599,535 08/27/85
4,537,343 06/551,986 08/27/85
4,537,346 06/542,522 08/27/85
4,537,348 06/453,931 08/27/85
4,537,351 06/513,551 08/27/85
4,537,354 06/470,958 08/27/85
4,537,356 06/607,579 08/27/85
4,537,357 06/658,209 08/27/85
4,537,370 06/548,183 08/27/85
4,537,383 06/657,009 08/27/85
4,537,384 06/631,594 08/27/85
4,537,386 06/421,062 08/27/85
4,537,387 06/431,311 08/27/85
4,537,394 06/542,679 08/27/85
4,537,396 06/507,145 08/27/85
4,537,404 06/683,607 08/27/85
4,537,405 06/670,183 08/27/85
4,537,410 06/613,288 08/27/85
4,537,420 06/400,941 08/27/85
4,537,436 06/591,062 08/27/85
4,537,439 06/608,909 08/27/85
4,537,442 06/483,176 08/27/85
4,537,444 06/391,712 08/27/85
4,537,453 06/631,824 08/27/85
4,537,468 06/435,592 08/27/85
4,537,472 06/577,336 08/27/85
4,537,475 06/481,411 08/27/85
4,537,476 06/528,628 08/27/85
4,537,492 06/511,693 08/27/85
4,537,496 06/443,831 08/27/85
4,537,508 06/470,937 08/27/85
4,537,513 06/519,601 08/27/85
4,537,515 06/447,457 08/27/85
4,537,529 06/590,799 08/27/85
4,537,532 06/563,940 08/27/85
4,537,536 06/543,071 08/27/85
4,537,537 06/406,082 08/27/85
4,537,538 06/501,992 08/27/85
4,537,550 06/537,725 08/27/85
4,537,551 06/488,418 08/27/85
4,537,559 06/535,099 08/27/85
4,537,560 06/614,902 08/27/85
4,537,570 06/543,749 08/27/85
4,537,576 06/631,162 08/27/85
4,537,577 06/574,569 08/27/85
4,537,582 06/538,864 08/27/85
4,537,584 06/563,290 08/27/85
4,537,613 06/572,013 08/27/85
4,537,623 06/594,497 08/27/85
4,537,628 06/558,469 08/27/85
4,537,630 06/499,641 08/27/85
4,537,636 06/480,200 08/27/85
4,537,640 06/304,971 08/27/85
4,537,644 06/420,685 08/27/85
4,537,648 06/584,289 08/27/85
4,537,650 06/606,040 08/27/85
4,537,651 06/441,325 08/27/85
4,537,653 06/452,488 08/27/85
4,537,655 06/490,597 08/27/85
4,537,656 06/557,385 08/27/85
4,537,666 06/585,062 08/27/85
4,537,675 06/377,791 08/27/85
4,537,676 06/336,785 08/27/85
4,537,677 06/668,048 08/27/85
4,537,682 06/460,090 08/27/85
4,537,688 06/547,906 08/27/85
4,537,692 06/646,199 08/27/85
4,537,694 06/535,140 08/27/85
4,537,695 06/621,774 08/27/85
4,537,705 06/603,679 08/27/85
4,537,711 06/455,684 08/27/85
4,537,718 06/436,799 08/27/85
4,537,719 06/431,557 08/27/85
4,537,721 06/561,609 08/27/85
4,537,730 06/516,167 08/27/85
4,537,733 06/547,384 08/27/85
4,537,740 06/480,961 08/27/85
4,537,742 06/546,234 08/27/85
4,537,745 06/574,792 08/27/85
4,537,750 06/584,848 08/27/85
4,537,751 06/594,078 08/27/85
4,537,752 06/631,706 08/27/85
4,537,758 06/591,092 08/27/85
4,537,763 06/387,651 08/27/85
4,537,769 06/366,296 08/27/85
4,537,774 06/541,479 08/27/85
4,537,783 06/486,612 08/27/85
4,537,785 06/488,582 08/27/85
4,537,792 06/537,665 08/27/85
4,537,806 06/665,743 08/27/85
4,537,807 06/600,543 08/27/85
4,537,810 06/561,636 08/27/85
4,537,814 06/574,256 08/27/85
4,537,819 06/678,303 08/27/85
4,537,820 06/547,669 08/27/85
4,537,823 06/553,288 08/27/85
4,537,827 06/611,808 08/27/85
4,537,830 06/575,711 08/27/85
4,537,831 06/582,427 08/27/85
4,537,832 06/563,502 08/27/85
4,537,843 06/663,540 08/27/85
4,537,847 06/640,205 08/27/85
4,537,848 06/621,977 08/27/85
4,537,852 06/320,746 08/27/85
4,537,858 06/623,306 08/27/85
4,537,860 06/447,748 08/27/85
4,537,866 06/594,590 08/27/85
4,537,869 06/672,634 08/27/85
4,537,871 06/602,648 08/27/85
4,537,872 06/602,751 08/27/85
4,537,874 06/543,150 08/27/85
4,537,880 06/635,096 08/27/85
4,537,893 06/604,687 08/27/85
4,537,896 06/504,338 08/27/85
4,537,897 06/532,825 08/27/85
4,537,900 06/632,311 08/27/85
4,537,913 06/586,966 08/27/85
4,537,916 06/624,329 08/27/85
4,537,919 06/643,693 08/27/85
4,537,921 06/575,248 08/27/85
4,537,923 06/503,436 08/27/85
4,537,925 06/669,461 08/27/85
4,537,929 06/572,334 08/27/85
4,537,930 06/454,366 08/27/85
4,537,939 06/617,407 08/27/85
4,537,942 06/597,540 08/27/85
4,537,950 06/471,152 08/27/85
4,537,951 06/592,698 08/27/85
4,537,957 06/503,986 08/27/85
4,537,960 06/529,037 08/27/85
4,537,964 06/637,665 08/27/85
4,537,976 06/558,074 08/27/85
4,537,977 06/596,865 08/27/85
4,537,979 06/520,130 08/27/85
4,537,986 06/517,625 08/27/85
4,537,990 06/478,601 08/27/85
4,537,996 06/534,702 08/27/85
4,538,007 06/573,990 08/27/85
4,538,009 06/599,574 08/27/85
4,538,012 06/584,031 08/27/85
4,538,020 06/577,106 08/27/85
4,538,025 06/570,883 08/27/85
4,538,027 06/402,426 08/27/85
4,538,028 06/538,073 08/27/85
4,538,029 06/538,074 08/27/85
4,538,039 06/484,894 08/27/85
4,538,048 06/416,548 08/27/85
4,538,053 06/457,295 08/27/85
4,538,062 06/442,087 08/27/85
4,538,067 06/448,122 08/27/85
4,538,070 06/500,849 08/27/85
4,538,075 06/529,917 08/27/85
4,538,076 06/392,750 08/27/85
4,538,083 06/511,687 08/27/85
4,538,084 06/604,354 08/27/85
4,538,085 06/482,554 08/27/85
4,538,091 06/466,810 08/27/85
4,538,102 06/529,637 08/27/85
4,538,106 06/503,924 08/27/85
4,538,111 06/423,086 08/27/85
4,538,115 06/621,053 08/27/85
4,538,125 06/487,406 08/27/85
4,538,127 06/263,611 08/27/85
4,538,130 06/602,761 08/27/85
4,538,133 06/562,827 08/27/85
4,538,158 06/370,475 08/27/85
4,538,186 06/370,777 08/27/85
4,538,189 06/577,510 08/27/85
4,538,192 06/388,165 08/27/85
4,538,209 06/527,634 08/27/85
4,538,211 06/639,881 08/27/85
4,538,217 06/533,322 08/27/85
4,538,220 06/548,546 08/27/85
4,538,228 06/427,385 08/27/85
4,538,231 06/379,745 08/27/85
4,538,237 06/458,795 08/27/85
4,538,240 06/454,912 08/27/85
4,538,242 06/511,334 08/27/85
4,538,251 06/483,623 08/27/85
4,538,252 06/295,210 08/27/85
4,538,254 06/418,253 08/27/85
4,538,259 06/511,059 08/27/85
4,538,261 06/509,007 08/27/85
4,538,265 06/478,574 08/27/85
4,538,272 06/564,270 08/27/85
4,538,274 06/455,445 08/27/85
4,538,288 06/528,465 08/27/85
4,538,295 06/408,699 08/27/85
4,858,245 07/195,863 08/22/89
4,858,249 07/254,250 08/22/89
4,858,257 07/166,348 08/22/89
4,858,259 07/211,028 08/22/89
4,858,260 07/166,675 08/22/89
4,858,262 06/917,792 08/22/89
4,858,264 07/253,994 08/22/89
4,858,266 07/200,545 08/22/89
4,858,272 07/160,383 08/22/89
4,858,273 06/724,615 08/22/89
4,858,275 07/237,760 08/22/89
4,858,288 06/719,129 08/22/89
4,858,289 06/492,041 08/22/89
4,858,294 07/193,888 08/22/89
4,858,296 07/188,982 08/22/89
4,858,297 07/104,790 08/22/89
4,858,301 07/240,919 08/22/89
4,858,302 07/259,186 08/22/89
4,858,304 07/247,046 08/22/89
4,858,309 07/212,828 08/22/89
4,858,310 07/180,505 08/22/89
4,858,311 07/133,634 08/22/89
4,858,317 07/199,177 08/22/89
4,858,319 07/118,627 08/22/89
4,858,329 07/143,066 08/22/89
4,858,332 07/246,266 08/22/89
4,858,334 07/175,415 08/22/89
4,858,336 07/160,287 08/22/89
4,858,338 07/195,699 08/22/89
4,858,339 07/141,524 08/22/89
4,858,340 07/156,282 08/22/89
4,858,343 07/158,644 08/22/89
4,858,350 07/237,810 08/22/89
4,858,352 07/112,530 08/22/89
4,858,355 07/050,187 08/22/89
4,858,359 07/081,309 08/22/89
4,858,360 07/237,749 08/22/89
4,858,362 07/224,934 08/22/89
4,858,364 07/230,895 08/22/89
4,858,369 07/251,308 08/22/89
4,858,370 07/218,091 08/22/89
4,858,374 07/229,239 08/22/89
4,858,378 07/151,014 08/22/89
4,858,382 07/272,314 08/22/89
4,858,383 07/217,334 08/22/89
4,858,399 07/234,514 08/22/89
4,858,401 07/144,732 08/22/89
4,858,404 07/323,204 08/22/89
4,858,407 07/044,983 08/22/89
4,858,413 07/144,036 08/22/89
4,858,417 07/270,834 08/22/89
4,858,418 07/148,500 08/22/89
4,858,419 07/250,070 08/22/89
4,858,420 07/097,658 08/22/89
4,858,421 07/308,461 08/22/89
4,858,423 07/237,332 08/22/89
4,858,432 07/236,972 08/22/89
4,858,433 07/236,973 08/22/89
4,858,439 07/156,576 08/22/89
4,858,450 07/159,456 08/22/89
4,858,458 07/159,191 08/22/89
4,858,459 07/078,937 08/22/89
4,858,460 07/169,917 08/22/89
4,858,476 07/147,823 08/22/89
4,858,477 07/211,315 08/22/89
4,858,478 07/232,659 08/22/89
4,858,481 07/192,052 08/22/89
4,858,483 07/301,855 08/22/89
4,858,489 06/897,499 08/22/89
4,858,494 07/189,336 08/22/89
4,858,496 06/934,791 08/22/89
4,858,501 07/230,938 08/22/89
4,858,502 07/261,731 08/22/89
4,858,504 07/227,086 08/22/89
4,858,509 07/200,696 08/22/89
4,858,513 06/564,050 08/22/89
4,858,514 07/033,579 08/22/89
4,858,518 07/231,862 08/22/89
4,858,519 07/019,149 08/22/89
4,858,523 07/218,107 08/22/89
4,858,527 07/076,300 08/22/89
4,858,529 07/214,370 08/22/89
4,858,535 06/874,717 08/22/89
4,858,537 07/294,080 08/22/89
4,858,541 07/160,195 08/22/89
4,858,552 07/027,431 08/22/89
4,858,554 07/238,923 08/22/89
4,858,555 07/225,794 08/22/89
4,858,558 07/146,712 08/22/89
4,858,563 07/210,410 08/22/89
4,858,568 07/218,244 08/22/89
4,858,569 07/154,392 08/22/89
4,858,570 07/259,253 08/22/89
4,858,571 07/162,210 08/22/89
4,858,573 06/797,478 08/22/89
4,858,579 07/214,728 08/22/89
4,858,582 07/216,960 08/22/89
4,858,583 07/150,666 08/22/89
4,858,584 07/249,675 08/22/89
4,858,592 07/016,761 08/22/89
4,858,593 07/220,516 08/22/89
4,858,601 07/200,054 08/22/89
4,858,612 06/562,742 08/22/89
4,858,614 07/188,356 08/22/89
4,858,621 07/168,953 08/22/89
4,858,623 07/072,746 08/22/89
4,858,628 07/121,304 08/22/89
4,858,629 06/889,321 08/22/89
4,858,630 06/939,203 08/22/89
4,858,631 07/178,538 08/22/89
4,858,635 07/158,591 08/22/89
4,858,636 07/193,113 08/22/89
4,858,637 07/137,053 08/22/89
4,858,638 07/269,297 08/22/89
4,858,647 07/037,813 08/22/89
4,858,653 06/947,750 08/22/89
4,858,654 07/153,098 08/22/89
4,858,655 07/021,222 08/22/89
4,858,656 07/222,129 08/22/89
4,858,658 07/193,751 08/22/89
4,858,660 07/291,260 08/22/89
4,858,664 07/132,361 08/22/89
4,858,666 06/857,637 08/22/89
4,858,672 07/198,229 08/22/89
4,858,675 07/189,952 08/22/89
4,858,684 07/193,116 08/22/89
4,858,685 07/201,366 08/22/89
4,858,690 07/224,974 08/22/89
4,858,696 07/158,793 08/22/89
4,858,700 07/066,432 08/22/89
4,858,705 07/176,452 08/22/89
4,858,706 07/208,407 08/22/89
4,858,713 07/163,947 08/22/89
4,858,714 07/170,675 08/22/89
4,858,725 07/255,345 08/22/89
4,858,732 06/946,116 08/22/89
4,858,737 07/186,505 08/22/89
4,858,742 07/193,853 08/22/89
4,858,761 07/206,773 08/22/89
4,858,767 07/092,003 08/22/89
4,858,775 07/156,304 08/22/89
4,858,778 07/156,964 08/22/89
4,858,797 07/150,826 08/22/89
4,858,799 07/264,068 08/22/89
4,858,801 07/167,501 08/22/89
4,858,803 07/074,521 08/22/89
4,858,805 07/194,409 08/22/89
4,858,808 07/054,745 08/22/89
4,858,815 07/222,415 08/22/89
4,858,816 07/162,125 08/22/89
4,858,822 07/237,052 08/22/89
4,858,823 06/766,380 08/22/89
4,858,825 06/898,189 08/22/89
4,858,831 07/158,835 08/22/89
4,858,832 07/225,301 08/22/89
4,858,833 07/211,982 08/22/89
4,858,836 07/129,539 08/22/89
4,858,841 07/116,665 08/22/89
4,858,843 07/235,003 08/22/89
4,858,852 07/056,250 08/22/89
4,858,860 07/273,603 08/22/89
4,858,868 07/197,003 08/22/89
4,858,869 07/246,781 08/22/89
4,858,870 07/301,800 08/22/89
4,858,875 07/193,689 08/22/89
4,858,878 07/111,459 08/22/89
4,858,885 07/206,777 08/22/89
4,858,887 07/249,678 08/22/89
4,858,888 07/217,693 08/22/89
4,858,892 07/184,877 08/22/89
4,858,896 07/097,148 08/22/89
4,858,901 07/201,142 08/22/89
4,858,904 07/180,292 08/22/89
4,858,907 07/234,205 08/22/89
4,858,926 07/175,903 08/22/89
4,858,928 07/055,000 08/22/89
4,858,934 07/186,915 08/22/89
4,858,940 07/169,343 08/22/89
4,858,941 07/076,699 08/22/89
4,858,942 07/231,486 08/22/89
4,858,946 07/116,730 08/22/89
4,858,952 06/766,092 08/22/89
4,858,953 07/024,125 08/22/89
4,858,960 07/269,462 08/22/89
4,858,961 07/085,860 08/22/89
4,858,963 07/220,452 08/22/89
4,858,965 07/253,492 08/22/89
4,858,969 07/090,330 08/22/89
4,858,984 07/139,444 08/22/89
4,858,987 07/192,071 08/22/89
4,858,993 07/234,595 08/22/89
4,858,997 07/222,807 08/22/89
4,858,998 07/142,506 08/22/89
4,859,000 07/232,466 08/22/89
4,859,002 07/216,182 08/22/89
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