Sumio Kiyoto
6Patents
3h-index
18Co-inventors
50Inventor score
Filing activity: May 3, 1983 → Apr 11, 1994
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5187195A | Anthraquinone derivatives and preparation thereof | Chemistry; Metallurgy | 40 | Expired |
| US4578271A | Biologically active WS 6049 substances, a process for the production thereof and their pharmaceutical compositions | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5436140A | Process for producing WS-9326A and WS-9326B | Chemistry; Metallurgy | 3 | Expired |
| US5217952A | Peptides WS-9326a and WS-9326b, derivatives thereof and uses thereof | Chemistry; Metallurgy | 1 | Expired |
| US4680178A | Antitumor agent comprising FR-900216 | Chemistry; Metallurgy | 1 | Expired |
| US4670259A | Compound FR-68504, production thereof and use thereof | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.