Masao Koshiba

Person

Nishinomiya, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Process for preparing 2(1H)-quinazolinone derivatives
- Patent number 4,387,223
- Issue date Jun 7, 1983
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diuretic and vasodilating tricyclic quinazolines
- Patent number 4,228,167
- Issue date Oct 14, 1980
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for preparing 3,4-dihydro-2(1H)-quinazolinone derivatives
- Patent number 4,202,974
- Issue date May 13, 1980
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Fused quinazolinones and preparation thereof
- Patent number 4,183,932
- Issue date Jan 15, 1980
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Imidazo- and pyrimido[2,1-b]quinazolines and preparation thereof
- Patent number 4,179,560
- Issue date Dec 18, 1979
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Nitroquinazolinone compounds having antiviral properties
- Patent number 4,146,717
- Issue date Mar 27, 1979
- Sumitomo Chemical Company, Limited
- Michihiro Yamamoto
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Quinazolinone derivatives and a process for production thereof
- Patent number 4,099,002
- Issue date Jul 4, 1978
- Sumitomo Chemical Company, Limited
- Shigeho Inaba
- C07 - ORGANIC CHEMISTRY

Masao Koshiba

Person

Patents Grantslast 30 patents

Process for preparing 2(1H)-quinazolinone derivatives

Diuretic and vasodilating tricyclic quinazolines

Process for preparing 3,4-dihydro-2(1H)-quinazolinone derivatives

Fused quinazolinones and preparation thereof

Imidazo- and pyrimido[2,1-b]quinazolines and preparation thereof

Nitroquinazolinone compounds having antiviral properties

Quinazolinone derivatives and a process for production thereof