Inventor · disambiguated record
Shigenari Katayama
Also filed as: KATAYAMA SHIGENARI · KOSHIBA MASAO
13 granted patents·118 citations·filing 1973–1976
91Inventor score
Files withSUMITOMO CHEMICAL CO13
Top patents by PatentIndex Score
13 records- 0192US4387223AProcess for preparing 2(1H)-quinazolinone derivativesSUMITOMO CHEMICAL CO·Filed 1976·Granted Jun 7, 1983·25 cites·2 claims
- 0289US3936468APhenylbutanol derivativesSUMITOMO CHEMICAL CO·Filed 1973·Granted Feb 3, 1976·19 cites·4 claims
- 0388US4202974AProcess for preparing 3,4-dihydro-2(1H)-quinazolinone derivativesSUMITOMO CHEMICAL CO·Filed 1976·Granted May 13, 1980·18 cites·2 claims
- 0485US4148796Aγ-PiperidinobutyrophenonesSUMITOMO CHEMICAL CO·Filed 1973·Granted Apr 10, 1979·15 cites·15 claims
- 0575US4048168AProcess for preparing 1-polyhaloalkyl-3,4-dihydro-2-(1H)-quinazolinonesSUMITOMO CHEMICAL CO·Filed 1976·Granted Sep 13, 1977·13 cites·4 claims
- 0664US4009173AButyrophenone derivativesSUMITOMO CHEMICAL CO·Filed 1975·Granted Feb 22, 1977·4 cites·2 claims
- 0754US3979390AButyrophenone derivatives and production thereofSUMITOMO CHEMICAL CO·Filed 1973·Granted Sep 7, 1976·14 cites·6 claims
- 0850US4012515AAryl ketones and production thereofSUMITOMO CHEMICAL CO·Filed 1975·Granted Mar 15, 1977·2 cites·6 claims
- 0943US4012514AAryl ketones and production thereofSUMITOMO CHEMICAL CO·Filed 1975·Granted Mar 15, 1977·1 cites·6 claims
- 1041US3933824APiperazinobutyrophenone derivativesSUMITOMO CHEMICAL CO·Filed 1973·Granted Jan 20, 1976·1 cites·2 claims
- 1139US3993780APhenoxyethylamine derivatives having central nervous system depressant and anti-hypertensive activitySUMITOMO CHEMICAL CO·Filed 1974·Granted Nov 23, 1976·5 cites·23 claims
- 1234US4065565AAcylhydrazones and anti-psychotic compositions thereofSUMITOMO CHEMICAL CO·Filed 1975·Granted Dec 27, 1977·1 cites·9 claims
- 1331US4001312AAminoalcoholsSUMITOMO CHEMICAL CO·Filed 1974·Granted Jan 4, 1977·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →