Ryuichiro Hara
6Patents
4h-index
18Co-inventors
46Inventor score
Filing activity: Dec 12, 1983 → Mar 27, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4608373A | Cephem compounds | Chemistry; Metallurgy | 20 | Expired |
| US4699980A | Process for preparing 3-substituted-methyl-3-cephem derivatives | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4690921A | Cephalosporin compounds and salts thereof | Chemistry; Metallurgy | 15 | Expired |
| US4904660A | Histidine derivatives as superior renin inhibitors | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5233035A | Cephalosporin derivatives | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4845211A | Amino-3-substituted-methyl-3-cephem-4-carboxylic acid and lower alkylsilyl derivatives thereof | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.