Inventor · disambiguated record
Frederic C. Schaefer
Also filed as: SCHAEFER FREDERIC C
6 granted patents·111 citations·filing 1980–1984
84Inventor score
Files withAMERICAN CYANAMID CO6
Top patents by PatentIndex Score
6 records- 0192US4374987AProcess for the preparation of high purity methotrexate and derivatives thereofAMERICAN CYANAMID CO·Filed 1980·Granted Feb 22, 1983·32 cites·2 claims
- 0283US4399074APreparation of tertiary alkyl isocyanatesAMERICAN CYANAMID CO·Filed 1982·Granted Aug 16, 1983·21 cites·8 claims
- 0379US4429096AQuaternary amine carbamate or urea compounds based on isopropenyl-α,α-dimethylbenzyl isocyanateAMERICAN CYANAMID CO·Filed 1983·Granted Jan 31, 1984·41 cites·8 claims
- 0468US4399073APreparation of tertiary alkyl isocyanatesAMERICAN CYANAMID CO·Filed 1982·Granted Aug 16, 1983·9 cites·13 claims
- 0545US4556702AOligomers and homopolymers of meta- or para-isopropenyl-α,α-dimethylbenzylisocyanateAMERICAN CYANAMID CO·Filed 1983·Granted Dec 3, 1985·6 cites·15 claims
- 0632US4891441AProcess for the preparation of polymeric tertiary aralkyl isocyanates from 1,3- or 1,4-bis(1-chloro-1-methylethyl)benzeneAMERICAN CYANAMID CO·Filed 1984·Granted Jan 2, 1990·2 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →