Takehiro Ogasa
12Patents
3h-index
27Co-inventors
60Inventor score
Filing activity: Mar 23, 1979 → Apr 12, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4302540A | Process of producing optically active cephalosporin analogs by enzyme selective deacylation | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4316958A | Process for producing optically active cephalosporin analogs | Chemistry; Metallurgy | 4 | Expired |
| US4760060A | 3-heteroaralkylthio carbacephem compounds and antibacterial pharmaceutical composition | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4291164A | Cephalosporin analogs and methods for production thereof | Chemistry; Metallurgy | 3 | Expired |
| US4640919A | 3-substituted carbacepem compounds having antibacterial effect | Chemistry; Metallurgy | 3 | Expired |
| US4332896A | Process for producing cephalosporin analogs | Chemistry; Metallurgy | 3 | Expired |
| US5585488A | Process for producing indolocarbazole derivatives | Chemistry; Metallurgy | 2 | Expired |
| US6197998A | Process for producing N-glycyltyrosine and its crystal structure | Chemistry; Metallurgy | 1 | Expired |
| US4755596A | Optically active carbacephems | Emerging Cross-Sectional Technologies | 0 | Expired |
| US5344938A | Indole 3-carboxylic acid derivatives | Human Necessities | 0 | Expired |
| US5756823A | Glutathione monoester sulfonate | Chemistry; Metallurgy | 0 | Expired |
| US4663450A | Optically active cephalosporin analogs | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.