Sigeru Torii
58Patents
7h-index
35Co-inventors
72Inventor score
Filing activity: Aug 22, 1977 → Mar 26, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4588835A | Process for preparing alkoxyphenols | Chemistry; Metallurgy | 28 | Expired |
| US4784734A | Azetidinone derivatives and process for the preparation of the same | Chemistry; Metallurgy | 25 | Expired |
| US4861768A | 2 .beta.-substituted thiomethylpenicillin derivatives and their preparation and use | Chemistry; Metallurgy | 9 | Expired |
| US4689411A | 4-thio azetidinone intermediates and process for the preparation of the same | Chemistry; Metallurgy | 8 | Expired |
| US4609438A | Process for preparing thiosulfonate derivatives | Chemistry; Metallurgy | 7 | Expired |
| US4482491A | Thiazolinoazetidinone derivatives and process for the preparation of the same | Chemistry; Metallurgy | 7 | Expired |
| US4127454A | Preparation of benzothiazolylsulfenamides | Chemistry; Metallurgy | 7 | Expired |
| US5204458A | Process for preparing cephem derivatives | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4219393A | Process for producing sulfenimides | Chemistry; Metallurgy | 5 | Expired |
| US4891369A | 2.beta.-Substituted-methylpenicillanic acid derivatives, and salts and esters thereof | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5196530A | Process for preparing 2-exo-methylenepenam derivatives | Chemistry; Metallurgy | 4 | Expired |
| US4798890A | Process for preparation of azetidinone derivatives | Chemistry; Metallurgy | 4 | Expired |
| US4958018A | Method for production of 3-exomethylenecepham derivatives | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4810788A | Azetidinone disulfide derivatives and a process for preparing the same | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4499265A | Process for preparing 3-exo-methylenecepham derivatives | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4120764A | Process for producing a tetraalkylthiuram disulfide | Chemistry; Metallurgy | 3 | Expired |
| US4895941A | Process for preparing 2.alpha.-methyl-2.beta.-(1,2,3-triazol-1-yl)methylpenam-3.alpha.-carboxy lic acid derivatives | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4853468A | Process for the preparation of cephem derivatives | Chemistry; Metallurgy | 3 | Expired |
| US5968335A | Process for preparing 3-alkoxymethylcephem compounds | Chemistry; Metallurgy | 2 | Expired |
| US4599151A | Process for preparing 2,2-bishalomethylpenam derivatives | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5288860A | Process for preparing thiazolino azetidinone and 2-exo-methylenepenam derivative | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4629542A | Process for preparing 3-exomethylenecepham derivatives | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4186141A | Process for preparing 2-pentynyl ether | Chemistry; Metallurgy | 2 | Expired |
| US4898939A | Process for preparing 2.beta.-substituted-methylpenicillin derivatives | Emerging Cross-Sectional Technologies | 2 | Expired |
| US4482435A | Process for preparing thiazolidine compounds | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.