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 main-
tenance 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 ap-
plicable surcharge.
PATENTS WHICH EXPIRED April 1, 1998
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Number Serial Number Issue Date
4,578,837 06/660,419 04/01/86
4,578,846 06/583,344 04/01/86
4,578,852 06/636,367 04/01/86
4,578,861 06/567,082 04/01/86
4,578,874 06/478,906 04/01/86
4,578,884 06/669,113 04/01/86
4,578,887 06/554,395 04/01/86
4,578,891 06/634,308 04/01/86
4,578,892 06/718,553 04/01/86
4,578,900 06/672,247 04/01/86
4,578,925 06/698,477 04/01/86
4,578,926 06/584,397 04/01/86
4,578,940 06/292,424 04/01/86
4,578,941 06/644,928 04/01/86
4,578,944 06/664,644 04/01/86
4,578,955 06/678,277 04/01/86
4,578,961 06/699,985 04/01/86
4,578,966 06/400,042 04/01/86
4,578,967 06/370,771 04/01/86
4,578,978 06/606,478 04/01/86
4,578,982 06/645,023 04/01/86
4,578,989 06/753,766 04/01/86
4,579,000 06/623,181 04/01/86
4,579,004 06/652,320 04/01/86
4,579,005 06/672,313 04/01/86
4,579,006 06/636,214 04/01/86
4,579,007 06/666,311 04/01/86
4,579,008 06/623,135 04/01/86
4,579,011 06/619,331 04/01/86
4,579,017 06/621,657 04/01/86
4,579,022 06/539,799 04/01/86
4,579,023 06/664,029 04/01/86
4,579,025 06/490,297 04/01/86
4,579,026 06/659,324 04/01/86
4,579,028 06/637,501 04/01/86
4,579,029 06/641,269 04/01/86
4,579,040 06/741,055 04/01/86
4,579,047 06/681,908 04/01/86
4,579,050 06/639,165 04/01/86
4,579,053 06/674,480 04/01/86
4,579,063 06/708,257 04/01/86
4,579,065 06/513,635 04/01/86
4,579,067 06/683,575 04/01/86
4,579,070 06/707,252 04/01/86
4,579,077 06/660,059 04/01/86
4,579,079 06/555,625 04/01/86
4,579,085 06/692,325 04/01/86
4,579,090 06/707,092 04/01/86
4,579,101 06/590,391 04/01/86
4,579,105 06/625,581 04/01/86
4,579,109 06/621,910 04/01/86
4,579,123 06/562,124 04/01/86
4,579,126 06/696,367 04/01/86
4,579,130 06/564,606 04/01/86
4,579,140 06/722,212 04/01/86
4,579,146 06/765,526 04/01/86
4,579,153 06/628,564 04/01/86
4,579,165 06/579,955 04/01/86
4,579,171 06/472,265 04/01/86
4,579,174 06/650,311 04/01/86
4,579,175 06/639,639 04/01/86
4,579,176 06/605,040 04/01/86
4,579,181 06/629,736 04/01/86
4,579,210 06/546,055 04/01/86
4,579,212 06/581,954 04/01/86
4,579,218 06/540,645 04/01/86
4,579,225 06/678,817 04/01/86
4,579,228 06/547,335 04/01/86
4,579,230 06/573,380 04/01/86
4,579,237 06/726,762 04/01/86
4,579,247 06/509,405 04/01/86
4,579,249 06/615,688 04/01/86
4,579,259 06/706,920 04/01/86
4,579,261 06/598,056 04/01/86
4,579,267 06/585,571 04/01/86
4,579,270 06/590,579 04/01/86
4,579,271 06/731,935 04/01/86
4,579,272 06/574,624 04/01/86
4,579,280 06/701,436 04/01/86
4,579,284 06/601,489 04/01/86
4,579,289 06/549,451 04/01/86
4,579,291 06/489,330 04/01/86
4,579,294 06/708,482 04/01/86
4,579,295 06/678,474 04/01/86
4,579,313 06/703,829 04/01/86
4,579,317 06/459,233 04/01/86
4,579,323 06/666,281 04/01/86
4,579,333 06/525,935 04/01/86
4,579,350 06/661,911 04/01/86
4,579,359 06/635,272 04/01/86
4,579,369 06/567,857 04/01/86
4,579,376 06/589,453 04/01/86
4,579,378 06/666,924 04/01/86
4,579,379 06/569,811 04/01/86
4,579,382 06/596,733 04/01/86
4,579,387 06/589,229 04/01/86
4,579,389 06/605,285 04/01/86
4,579,390 06/724,303 04/01/86
4,579,392 06/635,507 04/01/86
4,579,393 06/545,326 04/01/86
4,579,394 06/533,022 04/01/86
4,579,399 06/642,642 04/01/86
4,579,409 06/558,168 04/01/86
4,579,410 06/690,232 04/01/86
4,579,411 06/477,058 04/01/86
4,579,419 06/537,277 04/01/86
4,579,421 06/539,270 04/01/86
4,579,458 06/486,290 04/01/86
4,579,462 06/735,747 04/01/86
4,579,474 06/476,371 04/01/86
4,579,480 06/603,351 04/01/86
4,579,481 06/489,757 04/01/86
4,579,491 06/581,473 04/01/86
4,579,493 06/524,852 04/01/86
4,579,495 06/337,955 04/01/86
4,579,498 06/617,697 04/01/86
4,579,502 06/647,528 04/01/86
4,579,505 06/674,137 04/01/86
4,579,506 06/634,286 04/01/86
4,579,515 06/713,789 04/01/86
4,579,517 06/589,099 04/01/86
4,579,518 06/653,985 04/01/86
4,579,519 06/650,123 04/01/86
4,579,522 06/466,665 04/01/86
4,579,527 06/688,027 04/01/86
4,579,534 06/666,647 04/01/86
4,579,551 06/590,073 04/01/86
4,579,559 06/644,701 04/01/86
4,579,571 06/658,504 04/01/86
4,579,578 06/614,278 04/01/86
4,579,588 06/714,350 04/01/86
4,579,589 06/676,354 04/01/86
4,579,594 06/600,278 04/01/86
4,579,596 06/667,335 04/01/86
4,579,599 06/548,829 04/01/86
4,579,606 06/657,485 04/01/86
4,579,609 06/618,592 04/01/86
4,579,612 06/585,188 04/01/86
4,579,613 06/605,884 04/01/86
4,579,615 06/633,095 04/01/86
4,579,624 06/706,612 04/01/86
4,579,625 06/652,075 04/01/86
4,579,626 06/706,751 04/01/86
4,579,629 06/576,971 04/01/86
4,579,631 06/536,436 04/01/86
4,579,637 06/569,596 04/01/86
4,579,640 06/762,290 04/01/86
4,579,642 06/668,891 04/01/86
4,579,645 06/484,155 04/01/86
4,579,653 06/641,866 04/01/86
4,579,664 06/472,811 04/01/86
4,579,665 06/765,622 04/01/86
4,579,668 06/499,117 04/01/86
4,579,670 06/593,377 04/01/86
4,579,673 06/545,337 04/01/86
4,579,678 06/619,974 04/01/86
4,579,682 06/558,214 04/01/86
4,579,687 06/561,396 04/01/86
4,579,688 06/549,439 04/01/86
4,579,701 06/653,396 04/01/86
4,579,723 06/717,055 04/01/86
4,579,730 06/608,462 04/01/86
4,579,732 06/406,036 04/01/86
4,579,733 06/762,817 04/01/86
4,579,737 06/672,742 04/01/86
4,579,739 06/561,044 04/01/86
4,579,748 06/773,388 04/01/86
4,579,767 06/709,044 04/01/86
4,579,770 06/645,765 04/01/86
4,579,774 06/666,377 04/01/86
4,579,775 06/603,732 04/01/86
4,579,782 06/771,538 04/01/86
4,579,786 06/718,340 04/01/86
4,579,793 06/687,902 04/01/86
4,579,811 06/566,395 04/01/86
4,579,814 06/678,516 04/01/86
4,579,823 06/536,290 04/01/86
4,579,830 06/625,372 04/01/86
4,579,833 06/700,191 04/01/86
4,579,842 06/695,687 04/01/86
4,579,857 06/466,262 04/01/86
4,579,862 06/510,782 04/01/86
4,579,867 06/598,131 04/01/86
4,579,868 06/671,418 04/01/86
4,579,872 06/730,536 04/01/86
4,579,875 06/726,752 04/01/86
4,579,879 06/626,209 04/01/86
4,579,881 06/688,969 04/01/86
4,579,884 06/691,031 04/01/86
4,579,888 06/718,139 04/01/86
4,579,890 06/545,606 04/01/86
4,579,892 06/615,080 04/01/86
4,579,893 06/568,569 04/01/86
4,579,896 06/688,247 04/01/86
4,579,900 06/716,525 04/01/86
4,579,901 06/684,878 04/01/86
4,579,903 06/683,663 04/01/86
4,579,904 06/558,789 04/01/86
4,579,905 06/523,187 04/01/86
4,579,910 06/688,376 04/01/86
4,579,912 06/685,583 04/01/86
4,579,913 06/669,754 04/01/86
4,579,919 06/673,337 04/01/86
4,579,925 06/727,063 04/01/86
4,579,926 06/598,223 04/01/86
4,579,930 06/709,280 04/01/86
4,579,936 06/609,367 04/01/86
4,579,937 06/660,487 04/01/86
4,579,938 06/597,883 04/01/86
4,579,952 06/517,238 04/01/86
4,579,954 06/604,385 04/01/86
4,579,955 06/468,385 04/01/86
4,579,957 06/736,531 04/01/86
4,579,958 06/565,250 04/01/86
4,579,960 06/607,845 04/01/86
4,579,963 06/710,128 04/01/86
4,579,967 06/464,270 04/01/86
4,579,970 06/622,224 04/01/86
4,579,971 06/715,922 04/01/86
4,579,972 06/750,108 04/01/86
4,579,973 06/699,874 04/01/86
4,579,975 06/712,453 04/01/86
4,579,976 06/679,196 04/01/86
4,579,991 06/570,716 04/01/86
4,579,998 06/587,761 04/01/86
4,580,009 06/608,330 04/01/86
4,580,010 06/642,436 04/01/86
4,580,011 06/527,781 04/01/86
4,580,020 06/650,849 04/01/86
4,580,021 06/702,685 04/01/86
4,580,028 06/695,101 04/01/86
4,580,034 06/558,704 04/01/86
4,580,037 06/653,989 04/01/86
4,580,039 06/461,028 04/01/86
4,580,052 06/477,918 04/01/86
4,580,054 06/593,501 04/01/86
4,580,055 06/577,442 04/01/86
4,580,056 06/632,004 04/01/86
4,580,059 06/617,818 04/01/86
4,580,062 06/487,379 04/01/86
4,580,066 06/592,148 04/01/86
4,580,074 06/674,867 04/01/86
4,580,083 06/652,169 04/01/86
4,580,086 06/589,527 04/01/86
4,580,087 06/621,475 04/01/86
4,580,088 06/584,705 04/01/86
4,580,096 06/280,409 04/01/86
4,580,098 06/490,660 04/01/86
4,580,108 06/552,634 04/01/86
4,580,116 06/699,990 04/01/86
4,580,119 06/496,814 04/01/86
4,580,122 06/616,222 04/01/86
4,580,125 06/658,305 04/01/86
4,580,141 06/533,089 04/01/86
4,580,145 06/677,808 04/01/86
4,580,151 06/637,387 04/01/86
4,580,166 06/444,616 04/01/86
4,580,169 06/681,437 04/01/86
4,580,176 06/553,938 04/01/86
4,580,181 06/442,439 04/01/86
4,580,186 06/735,730 04/01/86
4,580,187 06/592,361 04/01/86
4,580,190 06/679,331 04/01/86
4,580,191 06/594,793 04/01/86
4,580,194 06/662,756 04/01/86
4,580,197 06/704,231 04/01/86
4,580,205 06/587,642 04/01/86
4,580,206 06/517,609 04/01/86
4,580,207 06/638,665 04/01/86
4,580,208 06/510,250 04/01/86
4,580,216 06/276,412 04/01/86
4,580,220 06/515,843 04/01/86
4,580,221 06/438,347 04/01/86
4,580,229 06/540,177 04/01/86
4,580,230 06/571,415 04/01/86
4,580,234 06/515,911 04/01/86
4,580,237 06/468,213 04/01/86
4,580,243 06/531,986 04/01/86
4,580,249 06/675,034 04/01/86
4,580,252 06/486,616 04/01/86
4,580,253 06/489,385 04/01/86
4,580,254 06/633,861 04/01/86
4,580,256 06/697,906 04/01/86
4,580,259 06/359,677 04/01/86
4,580,260 06/606,803 04/01/86
4,580,261 06/589,449 04/01/86
4,580,265 06/509,699 04/01/86
4,580,270 06/512,172 04/01/86
4,580,273 06/634,845 04/01/86
4,580,289 06/625,350 04/01/86
4,580,294 06/600,270 04/01/86
4,910,803 07/269,724 03/27/90
4,910,808 07/322,915 03/27/90
4,910,809 07/173,835 03/27/90
4,910,811 07/111,276 03/27/90
4,910,813 07/299,011 03/27/90
4,910,816 07/200,765 03/27/90
4,910,821 07/341,829 03/27/90
4,910,825 07/239,443 03/27/90
4,910,826 07/250,875 03/27/90
4,910,827 07/309,875 03/27/90
4,910,830 07/260,222 03/27/90
4,910,831 07/365,318 03/27/90
4,910,837 07/025,512 03/27/90
4,910,847 07/304,140 03/27/90
4,910,849 07/350,069 03/27/90
4,910,851 07/238,340 03/27/90
4,910,852 07/242,560 03/27/90
4,910,854 07/365,700 03/27/90
4,910,855 07/332,680 03/27/90
4,910,856 07/305,013 03/27/90
4,910,862 07/323,398 03/27/90
4,910,869 07/370,159 03/27/90
4,910,871 07/312,080 03/27/90
4,910,872 07/376,449 03/27/90
4,910,874 07/363,472 03/27/90
4,910,877 07/220,200 03/27/90
4,910,883 07/234,402 03/27/90
4,910,885 07/144,960 03/27/90
4,910,888 07/239,658 03/27/90
4,910,889 07/262,806 03/27/90
4,910,890 07/061,812 03/27/90
4,910,896 07/137,335 03/27/90
4,910,897 07/248,819 03/27/90
4,910,903 07/316,457 03/27/90
4,910,904 07/329,301 03/27/90
4,910,908 07/378,382 03/27/90
4,910,909 07/381,463 03/27/90
4,910,910 07/260,565 03/27/90
4,910,914 07/210,841 03/27/90
4,910,925 07/355,300 03/27/90
4,910,930 07/264,099 03/27/90
4,910,933 07/184,939 03/27/90
4,910,937 07/116,486 03/27/90
4,910,944 07/336,686 03/27/90
4,910,960 07/327,657 03/27/90
4,910,976 07/302,369 03/27/90
4,910,981 07/325,457 03/27/90
4,910,985 07/070,298 03/27/90
4,910,990 07/332,900 03/27/90
4,910,996 07/185,694 03/27/90
4,910,997 07/303,673 03/27/90
4,911,001 07/265,086 03/27/90
4,911,002 07/334,054 03/27/90
4,911,005 07/242,320 03/27/90
4,911,008 07/252,946 03/27/90
4,911,012 07/169,859 03/27/90
4,911,018 07/340,369 03/27/90
4,911,019 07/133,315 03/27/90
4,911,026 07/334,482 03/27/90
4,911,029 07/272,530 03/27/90
4,911,037 07/269,914 03/27/90
4,911,040 07/319,171 03/27/90
4,911,051 07/335,803 03/27/90
4,911,058 07/346,419 03/27/90
4,911,060 07/325,606 03/27/90
4,911,062 07/323,236 03/27/90
4,911,067 07/307,305 03/27/90
4,911,073 07/225,096 03/27/90
4,911,096 07/213,926 03/27/90
4,911,101 07/221,633 03/27/90
4,911,104 07/337,967 03/27/90
4,911,105 07/224,578 03/27/90
4,911,109 07/217,267 03/27/90
4,911,116 07/332,196 03/27/90
4,911,117 07/218,181 03/27/90
4,911,118 07/333,584 03/27/90
4,911,121 07/302,462 03/27/90
4,911,122 07/290,466 03/27/90
4,911,134 07/224,053 03/27/90
4,911,138 07/351,197 03/27/90
4,911,140 07/379,053 03/27/90
4,911,149 07/241,522 03/27/90
4,911,152 06/866,372 03/27/90
4,911,154 07/069,138 03/27/90
4,911,161 07/043,849 03/27/90
4,911,162 07/240,843 03/27/90
4,911,168 07/297,505 03/27/90
4,911,170 07/235,067 03/27/90
4,911,175 07/098,009 03/27/90
4,911,178 07/201,534 03/27/90
4,911,181 07/222,534 03/27/90
4,911,191 07/337,140 03/27/90
4,911,196 07/293,065 03/27/90
4,911,201 07/336,863 03/27/90
4,911,204 07/289,725 03/27/90
4,911,208 07/262,876 03/27/90
4,911,209 07/323,937 03/27/90
4,911,213 07/332,283 03/27/90
4,911,214 07/385,401 03/27/90
4,911,221 07/129,842 03/27/90
4,911,226 07/231,514 03/27/90
4,911,227 07/195,674 03/27/90
4,911,228 07/198,108 03/27/90
4,911,230 07/371,660 03/27/90
4,911,234 07/280,051 03/27/90
4,911,238 07/286,397 03/27/90
4,911,247 07/236,521 03/27/90
4,911,248 07/217,168 03/27/90
4,911,258 07/079,007 03/27/90
4,911,261 07/330,123 03/27/90
4,911,264 07/275,937 03/27/90
4,911,267 07/226,849 03/27/90
4,911,268 07/291,482 03/27/90
4,911,284 07/399,310 03/27/90
4,911,285 07/260,787 03/27/90
4,911,287 07/326,526 03/27/90
4,911,288 07/394,022 03/27/90
4,911,289 07/338,885 03/27/90
4,911,294 07/194,493 03/27/90
4,911,300 07/301,794 03/27/90
4,911,309 07/236,149 03/27/90
4,911,312 07/325,706 03/27/90
4,911,317 07/233,524 03/27/90
4,911,319 07/331,456 03/27/90
4,911,321 07/295,921 03/27/90
4,911,331 06/671,962 03/27/90
4,911,333 07/188,270 03/27/90
4,911,335 07/210,383 03/27/90
4,911,338 06/779,090 03/27/90
4,911,342 07/294,768 03/27/90
4,911,345 07/402,985 03/27/90
4,911,348 07/192,263 03/27/90
4,911,352 07/315,452 03/27/90
4,911,356 07/188,983 03/27/90
4,911,361 07/169,776 03/27/90
4,911,364 07/309,344 03/27/90
4,911,376 07/244,097 03/27/90
4,911,377 07/367,427 03/27/90
4,911,380 07/107,704 03/27/90
4,911,411 07/335,378 03/27/90
4,911,420 07/316,869 03/27/90
4,911,425 07/329,664 03/27/90
4,911,427 06/712,764 03/27/90
4,911,428 07/335,490 03/27/90
4,911,431 07/282,481 03/27/90
4,911,434 07/302,567 03/27/90
4,911,437 07/308,100 03/27/90
4,911,441 07/067,726 03/27/90
4,911,450 07/314,405 03/27/90
4,911,451 07/330,383 03/27/90
4,911,452 07/181,170 03/27/90
4,911,457 07/323,471 03/27/90
4,911,458 07/293,630 03/27/90
4,911,460 07/309,210 03/27/90
4,911,463 07/278,028 03/27/90
4,911,464 07/080,105 03/27/90
4,911,465 07/279,641 03/27/90
4,911,467 07/273,445 03/27/90
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