Patent 5194614 Issued on March 16, 1993. Estimated Expiration Date: February 26, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
544/400, Acyclic nitrogen bonded directly to the -C(=X)- group544/162, Nitrogen attached directed or indirectly to morpholine ring by nonionic bonding544/355, Having -C(=X)-, wherein X is chalcogen, bonded directly to diazine ring carbon546/243, At 2-position546/262, Having -C(=X)-, wherein X is chalcogen, bonded directly to pyridine or partially hydrogenated pyridine ring548/492, Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the five-membered hetero ring (e.g., indole-2-carboxylic acids, etc.)548/543, Chalcogen bonded directly to a ring carbon of the five-membered hetero ring which is adjacent to the ring nitrogen (e.g., 2-pyrrolidones, etc.)548/952, Chalcogen bonded directly to ring carbon of the hetero ring549/72Nitrogen or chalcogen attached indirectly to the hetero ring by nonionic bonding
February 26, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
