Ishikawa; Masayuki

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
4(3H)-Quinazolinone derivatives, process for production thereof, an...
- Patent number 4,451,467
- Issue date May 29, 1984
- Ishikawa; Masayuki
- Masayuki Ishikawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1-Phthalazone derivatives, and use thereof
- Patent number 4,293,553
- Issue date Oct 6, 1981
- Ishikawa; Masayuki
- Masayuki Ishikawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
3-Aromatic moiety substituted-4(3H)-quinazolinones, process for pro...
- Patent number 4,276,295
- Issue date Jun 30, 1981
- Ishikawa; Masayuki
- Masayuki Ishikawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
1.alpha., 2.alpha.-Dihydroxycholecalciferol and process for prepari...
- Patent number 4,011,250
- Issue date Mar 8, 1977
- Ishikawa; Masayuki
- Masayuki Ishikawa
- C07 - ORGANIC CHEMISTRY

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