Masayuki Ishikawa
4Patents
0Active
4Granted
26Portfolio score
Filing activity: Aug 6, 1975 → Jan 6, 1982
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4276295A | 3-Aromatic moiety substituted-4(3H)-quinazolinones, process for production thereof, and use thereof | Chemistry; Metallurgy | 11 | Expired |
| US4011250A | 1.alpha., 2.alpha.-Dihydroxycholecalciferol and process for preparing the same | Chemistry; Metallurgy | 11 | Expired |
| US4451467A | 4(3H)-Quinazolinone derivatives, process for production thereof, and pharmaceutical compositions comprising said compounds | Chemistry; Metallurgy | 8 | Expired |
| US4293553A | 1-Phthalazone derivatives, and use thereof | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.