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 July 30, 1997
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Number Serial Number Issue Date
Re. 32,280 06/776,622 11/11/86
(4,531,382) (06/524,448) (07/30/85)
Re. 34,274 07/728,113 06/08/93
(4,851,117) (07/200,565) (07/25/89)
4,531,242 06/474,088 07/30/85
4,531,252 06/506,369 07/30/85
4,531,253 06/513,695 07/30/85
4,531,257 06/550,366 07/30/85
4,531,263 06/602,017 07/30/85
4,531,265 06/674,704 07/30/85
4,531,267 06/552,878 07/30/85
4,531,276 06/565,470 07/30/85
4,531,279 06/410,438 07/30/85
4,531,283 06/491,567 07/30/85
4,531,284 06/647,870 07/30/85
4,531,287 06/609,242 07/30/85
4,531,293 06/576,746 07/30/85
4,531,300 06/607,997 07/30/85
4,531,301 06/628,794 07/30/85
4,531,305 06/503,553 07/30/85
4,531,306 06/455,924 07/30/85
4,531,317 06/618,534 07/30/85
4,531,334 06/508,136 07/30/85
4,531,338 06/504,390 07/30/85
4,531,343 06/311,348 07/30/85
4,531,345 06/438,214 07/30/85
4,531,363 06/635,557 07/30/85
4,531,364 06/612,629 07/30/85
4,531,366 06/382,849 07/30/85
4,531,369 06/351,756 07/30/85
4,531,370 06/437,940 07/30/85
4,531,375 06/610,066 07/30/85
4,531,387 06/565,731 07/30/85
4,531,388 06/475,453 07/30/85
4,531,402 06/490,533 07/30/85
4,531,407 06/563,273 07/30/85
4,531,409 06/416,082 07/30/85
4,531,411 06/545,426 07/30/85
4,531,418 06/532,480 07/30/85
4,531,420 06/454,457 07/30/85
4,531,421 06/558,679 07/30/85
4,531,422 06/527,460 07/30/85
4,531,426 06/545,225 07/30/85
4,531,430 06/453,668 07/30/85
4,531,431 06/449,193 07/30/85
4,531,433 06/583,298 07/30/85
4,531,435 06/428,477 07/30/85
4,531,436 06/614,428 07/30/85
4,531,444 06/539,783 07/30/85
4,531,451 06/536,433 07/30/85
4,531,460 06/356,816 07/30/85
4,531,464 06/632,998 07/30/85
4,531,470 06/591,964 07/30/85
4,531,474 06/585,693 07/30/85
4,531,484 06/438,756 07/30/85
4,531,486 06/490,534 07/30/85
4,531,487 06/568,149 07/30/85
4,531,490 06/619,789 07/30/85
4,531,491 06/556,606 07/30/85
4,531,496 06/391,964 07/30/85
4,531,500 06/602,124 07/30/85
4,531,502 06/495,849 07/30/85
4,531,514 06/503,249 07/30/85
4,531,523 06/657,446 07/30/85
4,531,533 06/570,575 07/30/85
4,531,534 06/440,309 07/30/85
4,531,535 06/444,665 07/30/85
4,531,539 06/639,607 07/30/85
4,531,540 06/494,319 07/30/85
4,531,547 06/458,633 07/30/85
4,531,555 06/459,127 07/30/85
4,531,560 06/564,166 07/30/85
4,531,566 06/597,775 07/30/85
4,531,568 06/536,831 07/30/85
4,531,571 06/603,045 07/30/85
4,531,590 06/593,364 07/30/85
4,531,593 06/474,356 07/30/85
4,531,601 06/506,117 07/30/85
4,531,602 06/510,196 07/30/85
4,531,603 06/569,184 07/30/85
4,531,611 06/573,359 07/30/85
4,531,627 06/513,218 07/30/85
4,531,629 06/472,561 07/30/85
4,531,643 06/413,992 07/30/85
4,531,645 06/511,488 07/30/85
4,531,648 06/430,494 07/30/85
4,531,652 06/624,168 07/30/85
4,531,658 06/325,363 07/30/85
4,531,663 06/446,212 07/30/85
4,531,666 06/526,110 07/30/85
4,531,676 06/421,196 07/30/85
4,531,694 06/435,094 07/30/85
4,531,704 06/564,008 07/30/85
4,531,707 06/225,375 07/30/85
4,531,710 06/576,475 07/30/85
4,531,713 06/618,813 07/30/85
4,531,732 06/432,316 07/30/85
4,531,733 06/472,241 07/30/85
4,531,758 06/447,830 07/30/85
4,531,759 06/520,476 07/30/85
4,531,762 06/424,888 07/30/85
4,531,768 06/446,167 07/30/85
4,531,777 06/495,493 07/30/85
4,531,780 06/414,600 07/30/85
4,531,783 06/615,699 07/30/85
4,531,791 06/469,062 07/30/85
4,531,795 06/471,025 07/30/85
4,531,796 06/493,257 07/30/85
4,531,809 06/530,287 07/30/85
4,531,810 06/540,473 07/30/85
4,531,825 06/441,794 07/30/85
4,531,826 06/373,675 07/30/85
4,531,827 06/528,995 07/30/85
4,531,839 06/533,375 07/30/85
4,531,841 06/626,544 07/30/85
4,531,844 06/677,895 07/30/85
4,531,848 06/436,950 07/30/85
4,531,854 06/521,052 07/30/85
4,531,855 06/576,374 07/30/85
4,531,868 06/340,883 07/30/85
4,531,872 06/393,319 07/30/85
4,531,875 06/408,795 07/30/85
4,531,877 06/462,476 07/30/85
4,531,889 06/462,768 07/30/85
4,531,891 06/570,609 07/30/85
4,531,892 06/577,827 07/30/85
4,531,893 06/532,834 07/30/85
4,531,898 06/561,032 07/30/85
4,531,901 06/608,716 07/30/85
4,531,906 06/640,763 07/30/85
4,531,908 06/398,797 07/30/85
4,531,913 06/611,099 07/30/85
4,531,915 06/650,573 07/30/85
4,531,922 06/562,017 07/30/85
4,531,937 06/460,691 07/30/85
4,531,941 06/655,299 07/30/85
4,531,954 06/576,529 07/30/85
4,531,958 06/579,671 07/30/85
4,531,971 06/568,162 07/30/85
4,531,981 06/575,950 07/30/85
4,531,990 06/667,859 07/30/85
4,531,992 06/607,737 07/30/85
4,531,993 06/574,308 07/30/85
4,531,995 06/584,727 07/30/85
4,532,002 06/598,745 07/30/85
4,532,006 06/520,842 07/30/85
4,532,014 06/670,235 07/30/85
4,532,018 06/529,309 07/30/85
4,532,019 06/373,720 07/30/85
4,532,020 06/586,943 07/30/85
4,532,028 06/544,788 07/30/85
4,532,031 06/487,363 07/30/85
4,532,032 06/615,433 07/30/85
4,532,033 06/612,176 07/30/85
4,532,039 06/475,215 07/30/85
4,532,041 06/564,302 07/30/85
4,532,053 06/458,360 07/30/85
4,532,055 06/538,885 07/30/85
4,532,057 06/528,360 07/30/85
4,532,059 06/552,644 07/30/85
4,532,060 06/544,655 07/30/85
4,532,062 06/573,122 07/30/85
4,532,081 06/548,130 07/30/85
4,532,087 06/560,827 07/30/85
4,532,089 06/570,950 07/30/85
4,532,099 06/474,191 07/30/85
4,532,109 06/575,049 07/30/85
4,532,113 06/529,622 07/30/85
4,532,126 06/549,998 07/30/85
4,532,132 06/484,002 07/30/85
4,532,147 06/519,807 07/30/85
4,532,148 06/481,119 07/30/85
4,532,149 06/517,049 07/30/85
4,532,153 06/518,572 07/30/85
4,532,157 06/453,695 07/30/85
4,532,164 06/532,329 07/30/85
4,532,169 06/308,216 07/30/85
4,532,173 06/460,908 07/30/85
4,532,176 06/571,574 07/30/85
4,532,177 06/635,777 07/30/85
4,532,202 06/564,241 07/30/85
4,532,210 06/424,767 07/30/85
4,532,215 06/366,165 07/30/85
4,532,241 06/571,505 07/30/85
4,532,244 06/647,686 07/30/85
4,532,249 06/437,318 07/30/85
4,532,263 06/560,643 07/30/85
4,532,266 06/360,037 07/30/85
4,532,271 06/551,708 07/30/85
4,532,273 06/612,597 07/30/85
4,532,274 06/600,222 07/30/85
4,532,276 06/582,454 07/30/85
4,532,279 06/571,980 07/30/85
4,532,283 06/421,787 07/30/85
4,532,285 06/614,697 07/30/85
4,532,286 06/548,533 07/30/85
4,532,302 06/627,080 07/30/85
4,532,304 06/579,247 07/30/85
4,532,306 06/661,323 07/30/85
4,532,307 06/656,733 07/30/85
4,532,317 06/506,461 07/30/85
4,532,325 06/336,578 07/30/85
4,532,327 06/566,469 07/30/85
4,532,332 06/405,472 07/30/85
4,532,333 06/638,177 07/30/85
4,532,335 06/473,027 07/30/85
4,532,336 06/449,304 07/30/85
4,532,339 06/585,462 07/30/85
4,532,354 06/379,742 07/30/85
4,532,373 06/589,324 07/30/85
4,532,374 06/599,650 07/30/85
4,532,376 06/518,726 07/30/85
4,532,382 06/575,369 07/30/85
4,532,388 06/525,538 07/30/85
4,532,389 06/505,493 07/30/85
4,532,392 06/517,261 07/30/85
4,532,396 06/387,297 07/30/85
4,532,409 06/251,971 07/30/85
4,532,411 06/474,291 07/30/85
4,532,424 06/487,659 07/30/85
4,532,429 06/408,049 07/30/85
4,532,434 06/576,845 07/30/85
4,532,445 06/575,729 07/30/85
4,532,454 06/532,867 07/30/85
4,532,458 06/375,267 07/30/85
4,532,474 06/530,810 07/30/85
4,532,503 06/440,114 07/30/85
4,532,506 06/427,585 07/30/85
4,532,520 06/321,777 07/30/85
4,532,521 06/586,324 07/30/85
4,532,524 06/485,058 07/30/85
4,532,528 06/498,331 07/30/85
4,532,543 06/448,563 07/30/85
4,532,546 06/568,168 07/30/85
4,532,554 06/440,501 07/30/85
4,532,555 06/438,509 07/30/85
4,532,559 06/466,332 07/30/85
4,532,568 06/462,083 07/30/85
4,532,576 06/527,635 07/30/85
4,532,577 06/641,846 07/30/85
4,532,581 06/545,679 07/30/85
4,532,582 06/465,822 07/30/85
4,532,583 06/451,421 07/30/85
4,532,587 06/296,283 07/30/85
4,532,591 06/404,898 07/30/85
4,532,593 06/377,161 07/30/85
4,532,605 06/367,829 07/30/85
4,532,608 06/392,147 07/30/85
4,532,610 06/284,092 07/30/85
4,532,616 06/384,582 07/30/85
4,532,624 06/548,482 07/30/85
4,532,628 06/470,901 07/30/85
4,532,636 06/389,905 07/30/85
4,532,642 06/431,489 07/30/85
4,532,651 06/429,658 07/30/85
4,850,057 07/228,261 07/25/89
4,850,059 07/195,131 07/25/89
4,850,064 07/118,561 07/25/89
4,850,066 07/189,171 07/25/89
4,850,067 07/110,433 07/25/89
4,850,074 07/195,503 07/25/89
4,850,076 07/219,836 07/25/89
4,850,092 07/258,495 07/25/89
4,850,098 07/181,996 07/25/89
4,850,101 07/202,933 07/25/89
4,850,103 07/181,426 07/25/89
4,850,104 07/062,509 07/25/89
4,850,105 07/196,139 07/25/89
4,850,107 07/253,055 07/25/89
4,850,113 07/155,733 07/25/89
4,850,115 07/205,855 07/25/89
4,850,116 07/187,963 07/25/89
4,850,118 07/194,049 07/25/89
4,850,119 07/229,830 07/25/89
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4,850,129 07/213,628 07/25/89
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4,850,161 07/126,500 07/25/89
4,850,162 07/224,103 07/25/89
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4,850,170 07/233,956 07/25/89
4,850,172 07/105,963 07/25/89
4,850,174 07/094,299 07/25/89
4,850,175 06/849,169 07/25/89
4,850,183 07/188,975 07/25/89
4,850,190 07/191,569 07/25/89
4,850,191 07/138,930 07/25/89
4,850,192 07/132,354 07/25/89
4,850,196 07/111,891 07/25/89
4,850,203 07/244,067 07/25/89
4,850,204 07/090,105 07/25/89
4,850,215 07/166,210 07/25/89
4,850,216 07/126,228 07/25/89
4,850,234 07/166,349 07/25/89
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4,850,238 07/125,307 07/25/89
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4,850,240 07/177,339 07/25/89
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4,850,259 07/269,114 07/25/89
4,850,264 07/124,912 07/25/89
4,850,266 07/205,716 07/25/89
4,850,272 07/163,822 07/25/89
4,850,273 06/926,942 07/25/89
4,850,275 07/114,711 07/25/89
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4,850,740 07/202,135 07/25/89
4,850,743 07/099,769 07/25/89
4,850,744 07/239,813 07/25/89
4,850,747 07/202,504 07/25/89
4,850,753 07/152,827 07/25/89
4,850,755 07/176,160 07/25/89
4,850,770 07/249,951 07/25/89
4,850,771 07/196,881 07/25/89
4,850,773 07/198,795 07/25/89
4,850,774 07/113,611 07/25/89
4,850,779 06/828,859 07/25/89
4,850,780 07/101,842 07/25/89
4,850,788 07/072,760 07/25/89
4,850,789 07/121,344 07/25/89
4,850,792 07/029,260 07/25/89
4,850,794 07/085,583 07/25/89
4,850,799 07/306,090 07/25/89
4,850,800 07/300,491 07/25/89
4,850,802 06/487,142 07/25/89
4,850,811 07/224,698 07/25/89
4,850,820 07/194,768 07/25/89
4,850,827 07/082,039 07/25/89
4,850,831 07/207,662 07/25/89
4,850,835 07/089,229 07/25/89
4,850,841 07/252,939 07/25/89
4,850,842 07/179,466 07/25/89
4,850,847 07/192,413 07/25/89
4,850,851 07/141,526 07/25/89
4,850,860 07/194,314 07/25/89
4,850,862 07/189,666 07/25/89
4,850,865 07/044,587 07/25/89
4,850,871 06/932,005 07/25/89
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