Ikuo Matsukuma
12Patents
4h-index
25Co-inventors
56Inventor score
Filing activity: Feb 24, 1977 → Jun 14, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4588729A | Treating convulsions with dihydrouracil derivatives | Human Necessities | 39 | Expired |
| US4217130A | Agents for and method of modifying citrus fruit | Chemistry; Metallurgy | 23 | Expired |
| US4335211A | Process for producing optically active cephalosporin analogs | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4708956A | 3-position halogenated cephalosporin analogs and pharmaceutical compositions | Chemistry; Metallurgy | 6 | Expired |
| US4863935A | Mitomycin compounds having useful anti-tumor activity | Human Necessities | 4 | Expired |
| US4316958A | Process for producing optically active cephalosporin analogs | Chemistry; Metallurgy | 4 | Expired |
| US4332896A | Process for producing cephalosporin analogs | Chemistry; Metallurgy | 3 | Expired |
| US4302541A | Process of producing optically active cephalosporin analogs by enzyme selective deacylation | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5079358A | 6H-pyrazolo-[4,5,1-d,e]acridin-6-one derivatives having anit-tumor activity | Human Necessities | 2 | Expired |
| US4138485A | Phenylalanine derivatives | Chemistry; Metallurgy | 1 | Expired |
| US4755596A | Optically active carbacephems | Emerging Cross-Sectional Technologies | 0 | Expired |
| US4734494A | Optically active 3-halo carbacephems | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.