Inventor · disambiguated record
Masao Koshiba
Also filed as: KOSHIBA MASAO · MOROOKA SHIGEAKI · YAMAMOTO HISAO
15 granted patents·178 citations·filing 1974–1978
93Inventor score
Files withSUMITOMO CHEMICAL CO15
Top patents by PatentIndex Score
15 records- 0192US4387223AProcess for preparing 2(1H)-quinazolinone derivativesSUMITOMO CHEMICAL CO·Filed 1976·Granted Jun 7, 1983·25 cites·2 claims
- 0291US4099002AQuinazolinone derivatives and a process for production thereofSUMITOMO CHEMICAL CO·Filed 1974·Granted Jul 4, 1978·21 cites·11 claims
- 0388US4202974AProcess for preparing 3,4-dihydro-2(1H)-quinazolinone derivativesSUMITOMO CHEMICAL CO·Filed 1976·Granted May 13, 1980·18 cites·2 claims
- 0486US4146717ANitroquinazolinone compounds having antiviral propertiesSUMITOMO CHEMICAL CO·Filed 1974·Granted Mar 27, 1979·15 cites·7 claims
- 0582US4183932AFused quinazolinones and preparation thereofSUMITOMO CHEMICAL CO·Filed 1978·Granted Jan 15, 1980·18 cites·3 claims
- 0682US4067868AProduction of quinazolinone compoundsSUMITOMO CHEMICAL CO·Filed 1976·Granted Jan 10, 1978·11 cites·4 claims
- 0782US4002755ATriazoloquinazolinesSUMITOMO CHEMICAL CO·Filed 1975·Granted Jan 11, 1977·11 cites·6 claims
- 0879US4096144AProcess for preparing quinazolinone derivatives and their 2-(N-mono-substituted amino)-phenyl ketone intermediate derivativesSUMITOMO CHEMICAL CO·Filed 1975·Granted Jun 20, 1978·10 cites·9 claims
- 0979US3950526AQuinazoline derivatives in pharmaceutical compositions for treating pain and inflammationSUMITOMO CHEMICAL CO·Filed 1974·Granted Apr 13, 1976·10 cites·34 claims
- 1078US3953446AProcess for preparing quinazolinesSUMITOMO CHEMICAL CO·Filed 1974·Granted Apr 27, 1976·10 cites·2 claims
- 1175US4048168AProcess for preparing 1-polyhaloalkyl-3,4-dihydro-2-(1H)-quinazolinonesSUMITOMO CHEMICAL CO·Filed 1976·Granted Sep 13, 1977·13 cites·4 claims
- 1272US4179560AImidazo- and pyrimido[2,1-b]quinazolines and preparation thereofSUMITOMO CHEMICAL CO·Filed 1975·Granted Dec 18, 1979·11 cites·4 claims
- 1347US4228167ADiuretic and vasodilating tricyclic quinazolinesSUMITOMO CHEMICAL CO·Filed 1978·Granted Oct 14, 1980·3 cites·6 claims
- 1442US3970654AAntiviral 2(1H)-quinazolinone derivativesSUMITOMO CHEMICAL CO·Filed 1974·Granted Jul 20, 1976·1 cites·5 claims
- 1538US3980645AFused quinazolinones and a process for production thereofSUMITOMO CHEMICAL CO·Filed 1974·Granted Sep 14, 1976·1 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →