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 January 1, 1997
DUE TO FAILURE TO PAY MAINTENANCE FEES
Patent Number Serial Number Issue Date
4,490,855 06/503,037 01/01/85
4,490,865 06/452,713 01/01/85
4,490,866 06/447,240 01/01/85
4,490,867 06/456,088 01/01/85
4,490,868 06/535,090 01/01/85
4,490,874 06/469,589 01/01/85
4,490,878 06/501,842 01/01/85
4,490,889 06/363,494 01/01/85
4,490,890 06/300,488 01/01/85
4,490,892 06/447,933 01/01/85
4,490,893 06/443,147 01/01/85
4,490,895 06/310,815 01/01/85
4,490,901 06/491,944 01/01/85
4,490,905 06/458,797 01/01/85
4,490,927 06/374,584 01/01/85
4,490,928 06/516,358 01/01/85
4,490,930 06/517,231 01/01/85
4,490,936 06/483,655 01/01/85
4,490,940 06/502,211 01/01/85
4,490,941 06/292,359 01/01/85
4,490,944 06/455,212 01/01/85
4,490,947 06/434,908 01/01/85
4,490,950 06/327,073 01/01/85
4,490,952 06/337,017 01/01/85
4,490,959 06/429,617 01/01/85
4,490,962 06/522,139 01/01/85
4,490,963 06/321,694 01/01/85
4,490,969 06/479,000 01/01/85
4,490,981 06/427,736 01/01/85
4,490,983 06/537,030 01/01/85
4,490,986 06/450,487 01/01/85
4,490,988 06/499,321 01/01/85
4,490,990 06/566,788 01/01/85
4,490,992 06/566,789 01/01/85
4,490,994 06/535,254 01/01/85
4,491,000 06/509,598 01/01/85
4,491,001 06/451,932 01/01/85
4,491,002 06/355,594 01/01/85
4,491,007 06/446,222 01/01/85
4,491,010 06/506,208 01/01/85
4,491,016 06/438,513 01/01/85
4,491,018 06/505,209 01/01/85
4,491,019 06/450,217 01/01/85
4,491,020 06/439,586 01/01/85
4,491,028 06/479,075 01/01/85
4,491,032 06/411,848 01/01/85
4,491,035 06/475,528 01/01/85
4,491,036 06/475,575 01/01/85
4,491,039 06/438,433 01/01/85
4,491,044 06/472,000 01/01/85
4,491,058 06/521,792 01/01/85
4,491,061 06/536,502 01/01/85
4,491,065 06/375,453 01/01/85
4,491,071 06/482,211 01/01/85
4,491,073 06/404,819 01/01/85
4,491,080 06/449,830 01/01/85
4,491,094 06/476,962 01/01/85
4,491,097 06/494,768 01/01/85
4,491,103 06/500,142 01/01/85
4,491,104 06/398,100 01/01/85
4,491,111 06/408,977 01/01/85
4,491,119 06/494,805 01/01/85
4,491,121 06/407,140 01/01/85
4,491,126 06/395,830 01/01/85
4,491,131 06/371,329 01/01/85
4,491,135 06/438,796 01/01/85
4,491,136 06/218,548 01/01/85
4,491,139 06/358,855 01/01/85
4,491,142 06/418,513 01/01/85
4,491,143 06/471,853 01/01/85
4,491,176 06/432,300 01/01/85
4,491,185 06/516,811 01/01/85
4,491,186 06/442,162 01/01/85
4,491,196 06/420,409 01/01/85
4,491,197 06/476,941 01/01/85
4,491,198 06/492,328 01/01/85
4,491,199 06/509,120 01/01/85
4,491,205 06/401,559 01/01/85
4,491,209 06/412,464 01/01/85
4,491,228 06/393,986 01/01/85
4,491,229 06/528,312 01/01/85
4,491,234 06/483,577 01/01/85
4,491,250 06/401,119 01/01/85
4,491,258 06/374,520 01/01/85
4,491,271 06/563,880 01/01/85
4,491,277 06/554,381 01/01/85
4,491,279 06/379,512 01/01/85
4,491,281 06/525,594 01/01/85
4,491,287 06/333,478 01/01/85
4,491,294 06/522,391 01/01/85
4,491,295 06/487,464 01/01/85
4,491,297 06/385,244 01/01/85
4,491,299 06/414,869 01/01/85
4,491,306 06/393,058 01/01/85
4,491,312 06/378,486 01/01/85
4,491,313 06/402,262 01/01/85
4,491,320 06/558,464 01/01/85
4,491,331 06/578,985 01/01/85
4,491,336 06/446,742 01/01/85
4,491,340 06/449,354 01/01/85
4,491,341 06/436,695 01/01/85
4,491,343 06/590,125 01/01/85
4,491,344 06/448,223 01/01/85
4,491,350 06/356,690 01/01/85
4,491,360 06/403,567 01/01/85
4,491,361 06/471,657 01/01/85
4,491,365 06/355,905 01/01/85
4,491,381 06/506,964 01/01/85
4,491,382 06/579,803 01/01/85
4,491,391 06/348,627 01/01/85
4,491,395 06/349,345 01/01/85
4,491,398 06/326,041 01/01/85
4,491,399 06/511,522 01/01/85
4,491,402 06/410,876 01/01/85
4,491,416 06/511,173 01/01/85
4,491,418 06/440,430 01/01/85
4,491,431 06/454,812 01/01/85
4,491,432 06/454,814 01/01/85
4,491,442 06/348,058 01/01/85
4,491,445 06/407,798 01/01/85
4,491,446 06/514,931 01/01/85
4,491,447 06/455,779 01/01/85
4,491,448 06/430,793 01/01/85
4,491,451 06/411,128 01/01/85
4,491,459 06/491,420 01/01/85
4,491,468 06/409,811 01/01/85
4,491,474 06/577,537 01/01/85
4,491,475 06/578,227 01/01/85
4,491,482 06/477,765 01/01/85
4,491,487 06/541,491 01/01/85
4,491,489 06/539,405 01/01/85
4,491,493 06/483,293 01/01/85
4,491,496 06/568,099 01/01/85
4,491,498 06/364,558 01/01/85
4,491,501 06/447,960 01/01/85
4,491,512 06/562,951 01/01/85
4,491,513 06/600,431 01/01/85
4,491,514 06/600,432 01/01/85
4,491,517 06/564,794 01/01/85
4,491,529 06/518,274 01/01/85
4,491,530 06/496,764 01/01/85
4,491,535 06/497,785 01/01/85
4,491,538 06/435,131 01/01/85
4,491,539 06/488,921 01/01/85
4,491,541 06/542,974 01/01/85
4,491,544 06/409,144 01/01/85
4,491,546 06/348,621 01/01/85
4,491,553 06/392,062 01/01/85
4,491,554 06/536,332 01/01/85
4,491,555 06/562,605 01/01/85
4,491,557 06/522,644 01/01/85
4,491,561 06/531,429 01/01/85
4,491,563 06/448,878 01/01/85
4,491,565 06/459,558 01/01/85
4,491,570 06/606,484 01/01/85
4,491,573 06/590,690 01/01/85
4,491,577 06/455,866 01/01/85
4,491,579 06/547,438 01/01/85
4,491,584 06/323,055 01/01/85
4,491,594 06/585,805 01/01/85
4,491,605 06/391,259 01/01/85
4,491,609 06/520,003 01/01/85
4,491,611 06/588,606 01/01/85
4,491,616 06/582,157 01/01/85
4,491,620 06/420,486 01/01/85
4,491,623 06/396,448 01/01/85
4,491,624 06/428,873 01/01/85
4,491,638 06/527,858 01/01/85
4,491,640 06/403,667 01/01/85
4,491,641 06/430,182 01/01/85
4,491,643 06/569,123 01/01/85
4,491,644 06/497,355 01/01/85
4,491,646 06/537,294 01/01/85
4,491,650 06/374,989 01/01/85
4,491,652 06/372,461 01/01/85
4,491,667 06/388,244 01/01/85
4,491,673 06/369,443 01/01/85
4,491,676 06/508,468 01/01/85
4,491,680 06/569,516 01/01/85
4,491,682 06/552,952 01/01/85
4,491,689 06/490,769 01/01/85
4,491,695 06/486,721 01/01/85
4,491,699 06/254,428 01/01/85
4,491,704 06/488,235 01/01/85
4,491,705 06/434,621 01/01/85
4,491,713 06/315,745 01/01/85
4,491,719 06/451,219 01/01/85
4,491,721 06/385,518 01/01/85
4,491,722 06/521,648 01/01/85
4,491,723 06/465,091 01/01/85
4,491,725 06/426,982 01/01/85
4,491,727 06/279,348 01/01/85
4,491,729 06/420,391 01/01/85
4,491,735 06/561,859 01/01/85
4,491,738 06/443,287 01/01/85
4,491,739 06/424,583 01/01/85
4,491,742 06/436,359 01/01/85
4,491,744 06/561,140 01/01/85
4,491,747 06/427,725 01/01/85
4,491,750 06/425,158 01/01/85
4,491,753 06/350,355 01/01/85
4,491,754 06/350,351 01/01/85
4,491,766 06/391,745 01/01/85
4,491,782 06/365,044 01/01/85
4,491,783 06/370,916 01/01/85
4,491,787 06/292,933 01/01/85
4,491,790 06/358,770 01/01/85
4,491,792 06/449,258 01/01/85
4,491,794 06/437,670 01/01/85
4,491,795 06/378,926 01/01/85
4,491,796 06/359,635 01/01/85
4,491,811 06/506,569 01/01/85
4,491,813 06/401,236 01/01/85
4,491,814 06/484,776 01/01/85
4,491,826 06/495,090 01/01/85
4,491,830 06/493,246 01/01/85
4,491,832 06/344,745 01/01/85
4,491,835 06/361,316 01/01/85
4,491,836 06/417,647 01/01/85
4,491,837 06/361,812 01/01/85
4,491,857 06/361,011 01/01/85
4,491,862 06/388,775 01/01/85
4,491,866 06/411,733 01/01/85
4,491,867 06/421,776 01/01/85
4,491,869 06/361,528 01/01/85
4,491,880 06/421,401 01/01/85
4,491,881 06/344,766 01/01/85
4,491,884 06/471,008 01/01/85
4,491,887 06/405,430 01/01/85
4,491,889 06/347,977 01/01/85
4,491,893 06/493,231 01/01/85
4,491,903 06/613,012 01/01/85
4,491,905 06/368,029 01/01/85
4,491,908 06/326,442 01/01/85
4,491,909 06/350,795 01/01/85
4,491,913 06/433,744 01/01/85
4,491,914 06/445,473 01/01/85
4,491,919 06/526,240 01/01/85
4,491,931 06/363,383 01/01/85
4,491,932 06/307,663 01/01/85
4,491,938 06/334,852 01/01/85
4,491,939 06/486,956 01/01/85
4,491,941 06/284,933 01/01/85
4,491,951 06/512,854 01/01/85
4,491,956 06/416,743 01/01/85
4,491,957 06/440,763 01/01/85
4,491,967 06/399,151 01/01/85
4,491,968 06/482,961 01/01/85
4,491,971 06/473,298 01/01/85
4,491,979 06/455,848 01/01/85
4,491,983 06/373,110 01/01/85
4,491,984 06/469,281 01/01/85
4,793,006 07/155,991 12/27/88
4,793,008 06/940,727 12/27/88
4,793,009 07/001,644 12/27/88
4,793,011 07/058,242 12/27/88
4,793,019 07/092,018 12/27/88
4,793,027 07/142,955 12/27/88
4,793,028 07/120,113 12/27/88
4,793,031 07/098,943 12/27/88
4,793,033 06/656,477 12/27/88
4,793,036 07/100,265 12/27/88
4,793,038 07/038,266 12/27/88
4,793,040 06/603,389 12/27/88
4,793,045 06/933,390 12/27/88
4,793,046 06/854,304 12/27/88
4,793,056 07/040,472 12/27/88
4,793,078 07/041,718 12/27/88
4,793,080 06/926,321 12/27/88
4,793,084 07/069,268 12/27/88
4,793,086 07/103,341 12/27/88
4,793,087 07/044,141 12/27/88
4,793,097 06/911,712 12/27/88
4,793,101 07/108,710 12/27/88
4,793,102 07/104,224 12/27/88
4,793,103 06/897,850 12/27/88
4,793,108 06/837,628 12/27/88
4,793,115 07/119,546 12/27/88
4,793,120 07/138,812 12/27/88
4,793,127 07/174,939 12/27/88
4,793,130 07/060,888 12/27/88
4,793,133 06/546,567 12/27/88
4,793,137 06/940,798 12/27/88
4,793,140 07/072,784 12/27/88
4,793,141 07/120,097 12/27/88
4,793,146 07/070,371 12/27/88
4,793,154 06/750,276 12/27/88
4,793,160 06/415,687 12/27/88
4,793,161 07/125,710 12/27/88
4,793,164 07/030,298 12/27/88
4,793,169 06/879,369 12/27/88
4,793,173 07/092,425 12/27/88
4,793,174 07/104,108 12/27/88
4,793,177 07/122,842 12/27/88
4,793,186 07/110,986 12/27/88
4,793,187 07/062,919 12/27/88
4,793,193 06/937,096 12/27/88
4,793,203 07/094,825 12/27/88
4,793,204 07/125,565 12/27/88
4,793,206 07/165,368 12/27/88
4,793,210 07/044,031 12/27/88
4,793,212 07/085,456 12/27/88
4,793,216 07/046,987 12/27/88
4,793,217 06/907,106 12/27/88
4,793,218 07/106,383 12/27/88
4,793,221 07/031,840 12/27/88
4,793,223 06/935,874 12/27/88
4,793,225 06/533,639 12/27/88
4,793,227 07/061,726 12/27/88
4,793,235 07/133,564 12/27/88
4,793,237 07/066,303 12/27/88
4,793,240 06/877,942 12/27/88
4,793,241 07/117,464 12/27/88
4,793,246 07/082,588 12/27/88
4,793,247 07/091,980 12/27/88
4,793,248 07/156,327 12/27/88
4,793,254 07/155,216 12/27/88
4,793,259 07/109,402 12/27/88
4,793,263 06/891,607 12/27/88
4,793,264 07/037,062 12/27/88
4,793,267 06/942,957 12/27/88
4,793,269 07/161,538 12/27/88
4,793,273 07/027,490 12/27/88
4,793,278 06/933,040 12/27/88
4,793,282 07/050,466 12/27/88
4,793,294 06/838,360 12/27/88
4,793,300 06/922,029 12/27/88
4,793,307 07/133,488 12/27/88
4,793,311 07/120,197 12/27/88
4,793,312 07/043,765 12/27/88
4,793,316 06/938,884 12/27/88
4,793,329 07/098,843 12/27/88
4,793,335 07/005,469 12/27/88
4,793,342 07/021,274 12/27/88
4,793,343 07/087,398 12/27/88
4,793,347 07/008,524 12/27/88
4,793,355 07/039,515 12/27/88
4,793,357 06/933,781 12/27/88
4,793,359 07/041,996 12/27/88
4,793,371 07/125,933 12/27/88
4,793,384 07/047,508 12/27/88
4,793,386 07/092,561 12/27/88
4,793,391 07/190,409 12/27/88
4,793,395 06/937,693 12/27/88
4,793,402 07/097,146 12/27/88
4,793,403 07/087,696 12/27/88
4,793,411 07/213,204 12/27/88
4,793,415 06/947,140 12/27/88
4,793,416 07/068,006 12/27/88
4,793,417 07/086,877 12/27/88
4,793,423 07/059,435 12/27/88
4,793,425 07/125,717 12/27/88
4,793,431 07/092,584 12/27/88
4,793,434 07/030,152 12/27/88
4,793,435 07/097,783 12/27/88
4,793,440 07/134,707 12/27/88
4,793,442 07/117,621 12/27/88
4,793,450 07/073,832 12/27/88
4,793,451 06/419,174 12/27/88
4,793,456 07/032,725 12/27/88
4,793,457 07/036,912 12/27/88
4,793,461 07/019,220 12/27/88
4,793,463 07/120,936 12/27/88
4,793,464 06/474,832 12/27/88
4,793,467 07/112,836 12/27/88
4,793,473 07/096,490 12/27/88
4,793,476 07/175,148 12/27/88
4,793,477 07/112,692 12/27/88
4,793,482 07/125,147 12/27/88
4,793,484 06/925,213 12/27/88
4,793,485 07/124,415 12/27/88
4,793,486 06/873,237 12/27/88
4,793,496 07/092,506 12/27/88
4,793,498 07/099,252 12/27/88
4,793,508 07/096,789 12/27/88
4,793,514 07/049,531 12/27/88
4,793,517 07/035,915 12/27/88
4,793,518 07/041,214 12/27/88
4,793,521 07/143,372 12/27/88
4,793,529 07/076,342 12/27/88
4,793,531 07/028,150 12/27/88
4,793,533 07/093,138 12/27/88
4,793,540 07/008,710 12/27/88
4,793,545 07/072,967 12/27/88
4,793,547 06/823,412 12/27/88
4,793,548 07/100,750 12/27/88
4,793,553 06/319,273 12/27/88
4,793,558 07/015,682 12/27/88
4,793,562 07/084,921 12/27/88
4,793,570 07/000,883 12/27/88
4,793,572 06/909,846 12/27/88
4,793,577 06/940,599 12/27/88
4,793,578 07/117,963 12/27/88
4,793,582 06/397,086 12/27/88
4,793,586 07/090,447 12/27/88
4,793,593 07/150,514 12/27/88
4,793,595 06/924,405 12/27/88
4,793,597 06/936,433 12/27/88
4,793,602 07/112,265 12/27/88
4,793,605 06/913,698 12/27/88
4,793,608 06/916,639 12/27/88
4,793,609 06/915,562 12/27/88
4,793,610 07/101,986 12/27/88
4,793,612 07/019,208 12/27/88
4,793,616 07/006,002 12/27/88
4,793,617 07/080,939 12/27/88
4,793,618 07/088,723 12/27/88
4,793,622 07/165,004 12/27/88
4,793,624 07/100,593 12/27/88
4,793,628 07/128,607 12/27/88
4,793,629 07/100,347 12/27/88
4,793,635 07/119,022 12/27/88
4,793,643 07/025,973 12/27/88
4,793,644 07/167,705 12/27/88
4,793,650 07/101,585 12/27/88
4,793,651 06/333,054 12/27/88
4,793,653 07/123,521 12/27/88
4,793,655 07/028,580 12/27/88
4,793,657 07/092,042 12/27/88
4,793,661 07/101,755 12/27/88
4,793,676 07/142,348 12/27/88
4,793,680 07/052,284 12/27/88
4,793,686 06/610,938 12/27/88
4,793,687 06/609,467 12/27/88
4,793,691 06/812,860 12/27/88
4,793,695 07/071,174 12/27/88
4,793,696 07/119,886 12/27/88
4,793,703 07/080,902 12/27/88
4,793,706 07/003,427 12/27/88
4,793,708 07/030,593 12/27/88
4,793,709 06/766,483 12/27/88
4,793,711 06/856,438 12/27/88
4,793,712 06/842,084 12/27/88
4,793,716 07/122,166 12/27/88
4,793,725 07/041,117 12/27/88
4,793,729 07/142,508 12/27/88
4,793,737 07/057,554 12/27/88
4,793,745 06/827,704 12/27/88
4,793,747 07/182,381 12/27/88
4,793,750 07/098,063 12/27/88
4,793,752 07/048,235 12/27/88
4,793,754 06/511,205 12/27/88
4,793,757 07/049,944 12/27/88
4,793,762 07/064,992 12/27/88
4,793,765 07/091,180 12/27/88
4,793,767 07/133,111 12/27/88
4,793,769 07/163,602 12/27/88
4,793,772 07/120,991 12/27/88
4,793,776 07/130,134 12/27/88
4,793,784 07/108,422 12/27/88
4,793,790 07/100,797 12/27/88
4,793,793 07/174,212 12/27/88
4,793,798 07/007,005 12/27/88
4,793,801 07/088,296 12/27/88
4,793,802 07/123,413 12/27/88
4,793,804 07/095,859 12/27/88
4,793,810 06/932,259 12/27/88
4,793,812 07/104,741 12/27/88
4,793,813 06/787,542 12/27/88
4,793,819 07/017,135 12/27/88
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