Inventor · disambiguated record
Toshio Kumagai
Also filed as: KUMAGAI TOSHIO
9 granted patents·103 citations·filing 1987–1997
89Inventor score
Top patents by PatentIndex Score
9 records- 0187US4866171A(1R,5S,6S)-2-[(6,7-dihydro-5H-pyrazolo[1,2-a][1,2,4]triazolium-6-yl)]thio-6-[R-1-hydroxyethyl]-1-methyl-carbapenum-3-carboxylateLEDERLE JAPAN LTD·Filed 1987·Granted Sep 12, 1989·19 cites·6 claims
- 0284US5534510A2-[1-(1,3-thiazolin-2-yl)azetidin-3-yl]thio-carbapenem derivativesLEDERLE JAPAN LTD·Filed 1994·Granted Jul 9, 1996·24 cites·9 claims
- 0378US4925836AAntibacterially effective methods and compositions based upon (1R,5S,6S)-2-[(6,7-dihydro-5H-pyrazolo[1,2-a][1,2,4]triazolium-6-yl)]thio-6-[R-1-hydroxyethyl]-1-methyl-carbapenem-3-caroxylate and salts thereforeLEDERLE JAPAN LTD·Filed 1989·Granted May 15, 1990·10 cites·2 claims
- 0477US5783703ASulfur-containing compounds method for their use and prodctionLEDERLE JAPAN LTD·Filed 1997·Granted Jul 21, 1998·20 cites·16 claims
- 0568US4918184AAzetidin-2-one derivatives, and process for production thereof using tin enolatesLEDERLE JAPAN LTD·Filed 1987·Granted Apr 17, 1990·9 cites·10 claims
- 0654US5679790A2- 1-(1,3-thiazolin-2-yl)azetidin-3-yl!thio-carbapenem derivativesLEDERLE JAPAN LTD·Filed 1996·Granted Oct 21, 1997·10 cites·2 claims
- 0752US5886172ACarbapenem-3-carboxylic acid ester derivativesLEDERLE JAPAN LTD·Filed 1996·Granted Mar 23, 1999·9 cites·2 claims
- 0851US4925935AMethods for the manufacture of (1R,5S,6S)-2-[(6,7-dihydro-5H-pyrazolo[1,2-a][1,2,4]triazolium-6-yl]thio-6-[R-1-hydroxyethyl]-1-methyl-carbapenem-3-carboxylateLEDERLE JAPAN LTD·Filed 1989·Granted May 15, 1990·2 cites·7 claims
- 0920US6080755A1,9-diazabicyclo[4.3.0]nona-3,8-diene derivativesWYETH LEDERLE JAPAN LTD·Filed 1996·Granted Jun 27, 2000·0 cites·11 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →