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 June 4, 1997
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Number Serial Number Issue Date
Re. 33,536 06/946,464 02/12/91
(4,521,909) (06/538,858) (06/04/85)
Re. 34,332 07/703,390 08/03/93
(4,834,825) (07/098,856) (05/30/89)
Re. 34,501 07/707,742 01/11/94
(4,833,918) (07/095,848) (05/30/89)
4,520,510 06/558,576 06/04/85
4,520,511 06/403,419 06/04/85
4,520,514 06/490,119 06/04/85
4,520,521 06/473,341 06/04/85
4,520,526 06/623,107 06/04/85
4,520,529 06/525,937 06/04/85
4,520,530 06/528,973 06/04/85
4,520,533 06/522,401 06/04/85
4,520,534 06/455,623 06/04/85
4,520,535 06/492,142 06/04/85
4,520,540 06/478,897 06/04/85
4,520,551 06/525,005 06/04/85
4,520,553 06/608,784 06/04/85
4,520,559 06/570,252 06/04/85
4,520,576 06/529,504 06/04/85
4,520,596 06/475,535 06/04/85
4,520,600 06/234,435 06/04/85
4,520,602 06/289,190 06/04/85
4,520,611 06/541,474 06/04/85
4,520,624 06/630,054 06/04/85
4,520,626 06/337,283 06/04/85
4,520,632 06/524,281 06/04/85
4,520,635 06/614,775 06/04/85
4,520,653 06/527,633 06/04/85
4,520,656 06/559,988 06/04/85
4,520,658 06/556,790 06/04/85
4,520,664 06/498,420 06/04/85
4,520,673 06/462,052 06/04/85
4,520,675 06/480,742 06/04/85
4,520,679 06/433,109 06/04/85
4,520,685 06/350,389 06/04/85
4,520,687 06/470,648 06/04/85
4,520,688 06/652,156 06/04/85
4,520,689 06/434,114 06/04/85
4,520,693 06/309,240 06/04/85
4,520,715 06/622,831 06/04/85
4,520,720 06/493,676 06/04/85
4,520,723 06/565,282 06/04/85
4,520,730 06/440,549 06/04/85
4,520,738 06/622,346 06/04/85
4,520,741 06/599,957 06/04/85
4,520,745 06/429,852 06/04/85
4,520,749 06/492,342 06/04/85
4,520,760 06/602,857 06/04/85
4,520,762 06/531,233 06/04/85
4,520,766 06/616,855 06/04/85
4,520,770 06/428,268 06/04/85
4,520,771 06/544,206 06/04/85
4,520,778 06/540,368 06/04/85
4,520,806 06/495,630 06/04/85
4,520,811 06/584,326 06/04/85
4,520,814 06/426,109 06/04/85
4,520,816 06/457,433 06/04/85
4,520,823 06/533,755 06/04/85
4,520,827 06/578,470 06/04/85
4,520,830 06/566,058 06/04/85
4,520,832 06/461,811 06/04/85
4,520,837 06/575,634 06/04/85
4,520,843 06/583,561 06/04/85
4,520,853 06/577,333 06/04/85
4,520,854 06/555,496 06/04/85
4,520,857 06/549,533 06/04/85
4,520,858 06/547,839 06/04/85
4,520,859 06/284,346 06/04/85
4,520,861 06/553,163 06/04/85
4,520,867 06/577,178 06/04/85
4,520,881 06/534,195 06/04/85
4,520,885 06/405,488 06/04/85
4,520,888 06/478,194 06/04/85
4,520,889 06/508,418 06/04/85
4,520,891 06/487,969 06/04/85
4,520,892 06/467,208 06/04/85
4,520,903 06/441,055 06/04/85
4,520,904 06/550,161 06/04/85
4,520,905 06/587,784 06/04/85
4,520,907 06/473,968 06/04/85
4,520,913 06/405,402 06/04/85
4,520,915 06/396,137 06/04/85
4,520,932 06/462,224 06/04/85
4,520,935 06/591,838 06/04/85
4,520,939 06/581,845 06/04/85
4,520,942 06/602,481 06/04/85
4,520,945 06/590,697 06/04/85
4,520,947 06/410,220 06/04/85
4,520,949 06/483,865 06/04/85
4,520,955 06/569,296 06/04/85
4,520,956 06/485,257 06/04/85
4,520,960 06/457,729 06/04/85
4,520,962 06/344,802 06/04/85
4,520,967 06/560,876 06/04/85
4,520,971 06/383,231 06/04/85
4,520,974 06/473,204 06/04/85
4,520,981 06/497,096 06/04/85
4,520,987 06/389,231 06/04/85
4,520,991 06/587,588 06/04/85
4,520,995 06/413,531 06/04/85
4,521,001 06/659,660 06/04/85
4,521,005 06/528,437 06/04/85
4,521,007 06/620,859 06/04/85
4,521,013 06/476,355 06/04/85
4,521,022 06/495,520 06/04/85
4,521,028 06/448,238 06/04/85
4,521,029 06/390,971 06/04/85
4,521,033 06/491,383 06/04/85
4,521,034 06/359,116 06/04/85
4,521,037 06/642,261 06/04/85
4,521,039 06/463,510 06/04/85
4,521,047 06/477,658 06/04/85
4,521,050 06/579,083 06/04/85
4,521,051 06/532,395 06/04/85
4,521,055 06/412,584 06/04/85
4,521,056 06/596,056 06/04/85
4,521,065 06/536,303 06/04/85
4,521,073 06/338,941 06/04/85
4,521,076 06/511,207 06/04/85
4,521,078 06/263,546 06/04/85
4,521,095 06/529,122 06/04/85
4,521,097 06/423,020 06/04/85
4,521,103 06/446,274 06/04/85
4,521,105 06/503,535 06/04/85
4,521,106 06/409,259 06/04/85
4,521,107 06/654,807 06/04/85
4,521,109 06/600,041 06/04/85
4,521,112 06/452,387 06/04/85
4,521,113 06/382,303 06/04/85
4,521,122 06/448,020 06/04/85
4,521,128 06/564,034 06/04/85
4,521,131 06/610,228 06/04/85
4,521,137 06/518,345 06/04/85
4,521,138 06/416,206 06/04/85
4,521,147 06/397,018 06/04/85
4,521,159 06/496,669 06/04/85
4,521,165 06/646,011 06/04/85
4,521,166 06/372,639 06/04/85
4,521,167 06/483,178 06/04/85
4,521,175 06/468,371 06/04/85
4,521,177 06/597,551 06/04/85
4,521,179 06/568,048 06/04/85
4,521,184 06/541,350 06/04/85
4,521,190 06/517,948 06/04/85
4,521,192 06/516,184 06/04/85
4,521,199 06/554,692 06/04/85
4,521,207 06/456,736 06/04/85
4,521,218 06/581,538 06/04/85
4,521,225 06/540,929 06/04/85
4,521,227 06/576,561 06/04/85
4,521,229 06/547,802 06/04/85
4,521,231 06/550,694 06/04/85
4,521,235 06/555,243 06/04/85
4,521,237 06/496,929 06/04/85
4,521,247 06/475,210 06/04/85
4,521,248 06/642,946 06/04/85
4,521,249 06/567,028 06/04/85
4,521,250 06/608,980 06/04/85
4,521,251 06/492,083 06/04/85
4,521,257 06/468,661 06/04/85
4,521,262 06/439,333 06/04/85
4,521,268 06/629,303 06/04/85
4,521,269 06/565,175 06/04/85
4,521,271 06/382,940 06/04/85
4,521,280 06/616,342 06/04/85
4,521,287 06/625,846 06/04/85
4,521,289 06/257,416 06/04/85
4,521,299 06/546,789 06/04/85
4,521,301 06/586,416 06/04/85
4,521,302 06/597,178 06/04/85
4,521,307 06/429,266 06/04/85
4,521,308 06/407,708 06/04/85
4,521,312 06/466,148 06/04/85
4,521,319 06/519,784 06/04/85
4,521,320 06/544,295 06/04/85
4,521,328 06/290,778 06/04/85
4,521,330 06/531,555 06/04/85
4,521,332 06/373,924 06/04/85
4,521,338 06/404,106 06/04/85
4,521,344 06/531,095 06/04/85
4,521,351 06/533,532 06/04/85
4,521,352 06/486,955 06/04/85
4,521,359 06/327,274 06/04/85
4,521,361 06/518,829 06/04/85
4,521,364 06/394,891 06/04/85
4,521,365 06/563,450 06/04/85
4,521,370 06/396,394 06/04/85
4,521,379 06/507,561 06/04/85
4,521,381 06/669,126 06/04/85
4,521,388 06/594,010 06/04/85
4,521,392 06/475,275 06/04/85
4,521,393 06/624,702 06/04/85
4,521,398 06/514,742 06/04/85
4,521,399 06/490,149 06/04/85
4,521,408 06/368,339 06/04/85
4,521,438 06/537,143 06/04/85
4,521,440 06/566,123 06/04/85
4,521,443 06/607,499 06/04/85
4,521,451 06/538,029 06/04/85
4,521,455 06/459,415 06/04/85
4,521,456 06/525,122 06/04/85
4,521,461 06/603,796 06/04/85
4,521,477 06/426,900 06/04/85
4,521,480 06/521,578 06/04/85
4,521,482 06/563,014 06/04/85
4,521,484 06/618,105 06/04/85
4,521,489 06/619,699 06/04/85
4,521,490 06/522,419 06/04/85
4,521,491 06/572,126 06/04/85
4,521,494 06/543,550 06/04/85
4,521,496 06/482,993 06/04/85
4,521,498 06/400,775 06/04/85
4,521,502 06/450,375 06/04/85
4,521,515 06/313,405 06/04/85
4,521,523 06/566,779 06/04/85
4,521,525 06/614,895 06/04/85
4,521,532 06/602,747 06/04/85
4,521,536 06/578,144 06/04/85
4,521,538 06/472,255 06/04/85
4,521,539 06/609,054 06/04/85
4,521,543 06/636,233 06/04/85
4,521,545 06/632,178 06/04/85
4,521,547 06/567,996 06/04/85
4,521,557 06/507,206 06/04/85
4,521,558 06/584,180 06/04/85
4,521,569 06/562,922 06/04/85
4,521,576 06/556,580 06/04/85
4,521,580 06/526,990 06/04/85
4,521,582 06/637,242 06/04/85
4,521,583 06/578,402 06/04/85
4,521,614 06/491,040 06/04/85
4,521,616 06/220,574 06/04/85
4,521,617 06/585,189 06/04/85
4,521,621 06/557,795 06/04/85
4,521,622 06/576,956 06/04/85
4,521,626 06/602,041 06/04/85
4,521,635 06/562,366 06/04/85
4,521,636 06/562,365 06/04/85
4,521,637 06/562,364 06/04/85
4,521,638 06/580,633 06/04/85
4,521,639 06/546,967 06/04/85
4,521,640 06/515,841 06/04/85
4,521,641 06/568,028 06/04/85
4,521,647 06/581,283 06/04/85
4,521,651 06/534,506 06/04/85
4,521,653 06/485,070 06/04/85
4,521,657 06/487,472 06/04/85
4,521,658 06/571,157 06/04/85
4,521,663 06/499,758 06/04/85
4,521,665 06/569,148 06/04/85
4,521,671 06/542,617 06/04/85
4,521,672 06/436,891 06/04/85
4,521,683 06/245,719 06/04/85
4,521,686 06/497,515 06/04/85
4,521,688 06/459,842 06/04/85
4,521,689 06/469,195 06/04/85
4,521,697 06/453,389 06/04/85
4,521,701 06/419,118 06/04/85
4,521,704 06/462,204 06/04/85
4,521,705 06/515,408 06/04/85
4,521,707 06/560,971 06/04/85
4,521,711 06/482,755 06/04/85
4,521,713 06/461,585 06/04/85
4,521,714 06/447,141 06/04/85
4,521,717 06/445,339 06/04/85
4,521,720 06/383,040 06/04/85
4,521,724 06/588,870 06/04/85
4,521,725 06/557,676 06/04/85
4,521,734 06/457,589 06/04/85
4,521,756 06/559,595 06/04/85
4,521,757 06/406,615 06/04/85
4,521,760 06/533,184 06/04/85
4,521,762 06/455,787 06/04/85
4,521,766 06/436,206 06/04/85
4,521,775 06/458,084 06/04/85
4,521,786 06/422,404 06/04/85
4,521,790 06/453,534 06/04/85
4,521,794 06/626,487 06/04/85
4,521,795 06/446,141 06/04/85
4,521,802 06/440,985 06/04/85
4,521,803 06/433,562 06/04/85
4,521,806 06/409,566 06/04/85
4,521,807 06/397,716 06/04/85
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4,521,813 06/446,204 06/04/85
4,521,814 06/541,796 06/04/85
4,521,815 06/396,293 06/04/85
4,521,816 06/405,342 06/04/85
4,521,833 06/642,001 06/04/85
4,521,837 06/622,361 06/04/85
4,521,841 06/402,629 06/04/85
4,521,846 06/236,387 06/04/85
4,521,848 06/296,931 06/04/85
4,521,849 06/307,566 06/04/85
4,521,855 06/288,230 06/04/85
4,521,858 06/474,271 06/04/85
4,521,862 06/363,094 06/04/85
4,521,863 06/396,894 06/04/85
4,521,873 06/414,122 06/04/85
4,521,878 06/462,113 06/04/85
4,521,882 06/476,224 06/04/85
4,521,884 06/439,956 06/04/85
4,521,888 06/640,229 06/04/85
4,521,890 06/498,114 06/04/85
4,521,898 06/453,974 06/04/85
4,521,904 06/428,437 06/04/85
4,521,906 06/479,223 06/04/85
4,521,908 06/528,100 06/04/85
4,521,912 06/502,679 06/04/85
4,521,914 06/403,629 06/04/85
4,521,917 06/551,401 06/04/85
4,833,733 07/184,755 05/30/89
4,833,737 07/113,903 05/30/89
4,833,746 07/133,530 05/30/89
4,833,748 06/870,764 05/30/89
4,833,757 07/237,330 05/30/89
4,833,760 07/193,426 05/30/89
4,833,763 07/145,563 05/30/89
4,833,764 07/238,846 05/30/89
4,833,766 07/222,489 05/30/89
4,833,767 07/213,274 05/30/89
4,833,769 07/182,433 05/30/89
4,833,770 07/166,659 05/30/89
4,833,773 07/056,241 05/30/89
4,833,775 06/642,725 05/30/89
4,833,796 07/158,645 05/30/89
4,833,802 07/106,106 05/30/89
4,833,810 07/101,061 05/30/89
4,833,814 07/040,098 05/30/89
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4,833,823 06/942,366 05/30/89
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4,833,825 06/947,641 05/30/89
4,833,832 07/061,435 05/30/89
4,833,836 07/080,481 05/30/89
4,833,837 07/011,239 05/30/89
4,833,840 07/059,105 05/30/89
4,833,841 07/133,638 05/30/89
4,833,845 07/084,150 05/30/89
4,833,849 07/206,885 05/30/89
4,833,850 07/133,891 05/30/89
4,833,856 07/132,998 05/30/89
4,833,867 07/110,019 05/30/89
4,833,872 07/143,127 05/30/89
4,833,874 07/212,476 05/30/89
4,833,877 07/091,967 05/30/89
4,833,881 06/682,526 05/30/89
4,833,886 07/241,778 05/30/89
4,833,899 06/931,417 05/30/89
4,833,904 07/236,652 05/30/89
4,833,913 07/120,850 05/30/89
4,833,916 07/114,477 05/30/89
4,833,924 07/114,789 05/30/89
4,833,925 07/047,862 05/30/89
4,833,927 06/510,332 05/30/89
4,833,932 07/070,372 05/30/89
4,833,933 07/064,960 05/30/89
4,833,936 07/162,576 05/30/89
4,833,941 07/003,509 05/30/89
4,833,942 07/106,435 05/30/89
4,833,949 07/237,451 05/30/89
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4,833,960 07/203,095 05/30/89
4,833,962 06/935,500 05/30/89
4,833,966 07/155,797 05/30/89
4,833,976 06/717,227 05/30/89
4,833,977 07/045,686 05/30/89
4,833,979 07/210,018 05/30/89
4,833,982 07/236,333 05/30/89
4,833,983 07/151,587 05/30/89
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4,833,991 07/151,716 05/30/89
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4,833,994 07/143,778 05/30/89
4,833,999 07/234,798 05/30/89
4,834,001 06/862,483 05/30/89
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4,834,099 07/044,841 05/30/89
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4,834,111 07/002,149 05/30/89
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4,834,116 06/932,114 05/30/89
4,834,120 07/067,006 05/30/89
4,834,128 07/092,388 05/30/89
4,834,133 07/250,203 05/30/89
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4,834,166 07/000,723 05/30/89
4,834,173 07/123,617 05/30/89
4,834,176 07/180,128 05/30/89
4,834,182 06/676,377 05/30/89
4,834,184 07/247,788 05/30/89
4,834,190 07/134,681 05/30/89
4,834,195 07/110,847 05/30/89
4,834,196 07/064,596 05/30/89
4,834,206 07/054,741 05/30/89
4,834,207 07/105,007 05/30/89
4,834,208 07/172,509 05/30/89
4,834,209 07/104,794 05/30/89
4,834,213 07/247,266 05/30/89
4,834,215 07/205,276 05/30/89
4,834,219 07/121,883 05/30/89
4,834,230 07/117,560 05/30/89
4,834,240 07/251,078 05/30/89
4,834,241 07/167,921 05/30/89
4,834,248 07/182,125 05/30/89
4,834,249 07/047,195 05/30/89
4,834,258 07/105,563 05/30/89
4,834,270 07/179,854 05/30/89
4,834,271 07/120,926 05/30/89
4,834,272 07/135,171 05/30/89
4,834,277 07/021,454 05/30/89
4,834,279 07/080,888 05/30/89
4,834,288 07/000,452 05/30/89
4,834,292 07/044,889 05/30/89
4,834,294 07/174,125 05/30/89
4,834,300 07/164,577 05/30/89
4,834,314 07/200,939 05/30/89
4,834,317 07/027,604 05/30/89
4,834,321 07/023,630 05/30/89
4,834,326 07/148,884 05/30/89
4,834,330 06/874,654 05/30/89
4,834,332 07/146,494 05/30/89
4,834,333 07/232,901 05/30/89
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