Mitsuko Asai
26Patents
9h-index
16Co-inventors
68Inventor score
Filing activity: Apr 7, 1976 → Oct 16, 1989
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4361650A | Fermentation process of preparing demethyl maytansinoids | Chemistry; Metallurgy | 294 | Expired |
| US4322348A | Maytansinoids | Chemistry; Metallurgy | 293 | Expired |
| US4307016A | Demethyl maytansinoids | Chemistry; Metallurgy | 292 | Expired |
| US4364866A | Maytansinoids | Emerging Cross-Sectional Technologies | 291 | Expired |
| US4294757A | 20-O-Acylmaytansinoids | Chemistry; Metallurgy | 287 | Expired |
| US4151042A | Method for producing maytansinol and its derivatives | Chemistry; Metallurgy | 149 | Expired |
| US4162940A | Method for producing Antibiotic C-15003 by culturing nocardia | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4225494A | Maytansinol esters | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4229436A | Antibiotic G-6302 | Chemistry; Metallurgy | 11 | Expired |
| US4360462A | Process for preparing maytansinol | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4108724A | Method for preparing antibiotic P-2563 using Pseudomonas fluorescens | Human Necessities | 6 | Expired |
| US4518529A | Antibiotics C-19393S.sub.2 | Chemistry; Metallurgy | 4 | Expired |
| US4187292A | Antibiotics produced from the microorganism nocardice | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4521432A | Physiologically active substance FA-5859, its derivative, their production and use | Chemistry; Metallurgy | 4 | Expired |
| US4228239A | Method for producing antibiotic C-15003 P-3 | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4320200A | Antibiotic | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4189472A | Antibiotic C-11924 F-1 | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4245047A | Antibiotics produced from the microorganism nocardia | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4292309A | Antibiotics C-14482 B.sub.1, B.sub.2 and B.sub.3 | Chemistry; Metallurgy | 2 | Expired |
| US4298600A | Antibiotic C-14482 A.sub.1 and method for producing same | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4409147A | Carbapenem compounds and their production | Chemistry; Metallurgy | 1 | Expired |
| US4229533A | Method for producing antibiotic C-15003 P-4 | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4373028A | Culture of Nocardia ATCC 31309 | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4497742A | Isomerization of .beta.-lactam compounds | Chemistry; Metallurgy | 1 | Expired |
| US4315989A | Biologically pure culture of the microorganism Nocardia ATCC31280 | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.