Keiji Matsuda
22Patents
9h-index
34Co-inventors
71Inventor score
Filing activity: Feb 28, 1983 → Feb 20, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5215983A | Carbapenem compounds | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4963544A | 3-pyrrolidinylthio-1-azabicyclo[3.2.0]-hept-2-ene-2-carboxylic acid compounds | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4921852A | 3-pyrrolidinylthio-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid compounds | Emerging Cross-Sectional Technologies | 25 | Expired |
| US4822787A | 3-pyrrolidinylthio-1-azabicyclo(3.2.0)-hept-2-ene-2-carboxylic acid compounds and antimicrobial activity thereof | Emerging Cross-Sectional Technologies | 22 | Expired |
| US4963543A | 3-pyrolidinylthio-1-azabicyclo-[3.2.0]hept-2-ene-2-carboxylic acid derivatives and processes for the preparation thereof | Emerging Cross-Sectional Technologies | 20 | Expired |
| US5194624A | Intermediates for the preparation of compounds of antimicrobial activity | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6232290A | Cyclic hexapeptides with antimicrobial activity | Human Necessities | 12 | Expired |
| US6884868B1 | Cyclic hexapeptides having antibiotic activity | Human Necessities | 11 | Expired |
| US4493831A | Aminoglycoside derivatives | Chemistry; Metallurgy | 10 | Expired |
| US4925838A | 3-pyrrolidinylthio-1-azabicyclo[3.2.0]-hept-2-ene-2-carboxylic acid compounds | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4983596A | 3-pyrrolidinylthio-1-azabicyclo[3.2.0]-hept-2-ene-2-carboxylic acid derivatives and their preparation | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4656160A | Aminoglycoside derivatives | Human Necessities | 4 | Expired |
| US5061804A | 3-pyrrolidinylthio-1-azabicyclo-(3.2.0)hept-2-ene-2-carboxylic acid derivatives and processes for the preparation thereof | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5138064A | 3-Pyrrolidinylthio-1-azabicyclo-[3.2.0]hept-2-ene-2-carboxylic acid compounds | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4554269A | Kasugamycin derivatives, pharmaceutical compositions and method of use | Chemistry; Metallurgy | 3 | Expired |
| US6331521A | Echinocandine derivatives with antimicrobial activity | Human Necessities | 2 | Expired |
| US4504472A | 1,4-Diaminocyclitol derivatives | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5202437A | 3-pyrrolidinylthio-1-azabicyclo(3.2.0)-hept-2-ene-2-carboxylic acid compounds | Chemistry; Metallurgy | 1 | Expired |
| US5608056A | Substituted 3-pyrrolidinylthio-carbapenems as antimicrobial agents | Emerging Cross-Sectional Technologies | 1 | Expired |
| US5420122A | 3-pyrrolidinylthio-1-azabicyclo-[3.2.0]hept-2-ene-2-carboxylic acid compounds | Emerging Cross-Sectional Technologies | 0 | Expired |
| US6150351A | Cephem compounds and pharmaceutical use thereof | Chemistry; Metallurgy | 0 | Expired |
| US6884774B2 | Cyclic hexapeptide derivatives | Human Necessities | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.