Inventor · disambiguated record
Yutaka Kameyama
Also filed as: KAMEYAMA YUTAKA
37 granted patents·2 pending applications·262 citations·filing 1984–2022
96Inventor score
Files withOTSUKA KAGAKU KK32OTSUKA CHEMICAL CO LTD3KAO CORP1OTSUKA KAGAKU KASBUSHIKI KAISH1TANAKA HIDEO1
Top patents by PatentIndex Score
39 records- 0196US5693792Aβ-lactam and cephem compounds and processes for their productionOTSUKA KAGAKU KK·Filed 1995·Granted Dec 2, 1997·136 cites·1 claims
- 0284US5599925APenam derivativesOTSUKA KAGAKU KK·Filed 1994·Granted Feb 4, 1997·29 cites·3 claims
- 0375US7759483B23-alkenylcephem compounds and process for production thereofOTSUKA CHEMICAL CO LTD·Filed 2005·Granted Jul 20, 2010·2 cites·13 claims
- 0472US6576761B1Process for the preparation of cephem compoundsOTSUKA KAGAKU KK·Filed 2000·Granted Jun 10, 2003·10 cites·4 claims
- 0569US5070194AMethod for production of β-lactam derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Dec 3, 1991·10 cites·6 claims
- 0667US6417351B1Process for producing 3-alkenylcephem compoundsOTSUKA KAGAKU KK·Filed 1998·Granted Jul 9, 2002·12 cites·4 claims
- 0766US6797830B2Process for producing oxide with higher oxidation than alcoholOTSUKA KAGAKU KK·Filed 2001·Granted Sep 28, 2004·4 cites·8 claims
- 0866US4609438AProcess for preparing thiosulfonate derivativesOTSUKA KAGAKU KK·Filed 1984·Granted Sep 2, 1986·15 cites·12 claims
- 0965US5656754AProcess for preparing cephem compoundsOTSUKA KAGAKU KK·Filed 1993·Granted Aug 12, 1997·9 cites·6 claims
- 1060US7183421B2Processes for producing oxide with higher oxidation than alcoholOTSUKA KAGAKU KK·Filed 2004·Granted Feb 27, 2007·2 cites·10 claims
- 1158US5204458AProcess for preparing cephem derivativesOTSUKA KAGAKU KK·Filed 1992·Granted Apr 20, 1993·6 cites·1 claims
- 1256US5196530AProcess for preparing 2-exo-methylenepenam derivativesOTSUKA KAGAKU KK·Filed 1992·Granted Mar 23, 1993·5 cites·3 claims
- 1353US7692003B2Penicillin crystals and process for producing the sameOTSUKA CHEMICAL CO LTD·Filed 2004·Granted Apr 6, 2010·0 cites·2 claims
- 1450US5470972AProcess for preparing examethylenecephem compoundsOTSUKA KAGAKU KK·Filed 1993·Granted Nov 28, 1995·3 cites·3 claims
- 1547US5968335AProcess for preparing 3-alkoxymethylcephem compoundsOTSUKA KAGAKU KK·Filed 1997·Granted Oct 19, 1999·3 cites·2 claims
- 1647US2024325261A1Aqueous microcapsule dispersionKAO CORP·Filed 2022·Application pending·0 cites
- 1744US7893254B2Process for production of 3-alkenylcephem compoundsOTSUKA CHEMICAL CO LTD·Filed 2005·Granted Feb 22, 2011·0 cites·9 claims
- 1843US6887992B23-cephem derivative crystalOTSUKA KAGAKU KK·Filed 2003·Granted May 3, 2005·0 cites·2 claims
- 1943US5126447AProcess for preparation of β-lactam derivative from an alkenyl substituted β-lactam derivative using a ruthenium or rhenium catalyst and a periodic acidOTSUKA KAGAKU KK·Filed 1991·Granted Jun 30, 1992·2 cites·13 claims
- 2042US8293893B2Method for producing 6-hydroxyethylpenam compoundTANAKA HIDEO·Filed 2008·Granted Oct 23, 2012·0 cites·4 claims
- 2140US6043356AProcess for preparing β-lactam compoundOTSUKA KAGAKU KK·Filed 1999·Granted Mar 28, 2000·1 cites·5 claims
- 2239US2002099206A1Cephalosporin crystals and process for their preparationFiled 2002·Application pending·0 cites
- 2337US6399770B1Preparation of β-hydroxy esters using ammonium borohydridesOTSUKA KAGAKU KK·Filed 1999·Granted Jun 4, 2002·3 cites·3 claims
- 2437US5929233ACyclization for preparing halo-cephemsOTSUKA KAGAKU KK·Filed 1996·Granted Jul 27, 1999·1 cites·9 claims
- 2536US4958018AMethod for production of 3-exomethylenecepham derivativesOTSUKA KAGAKU KK·Filed 1989·Granted Sep 18, 1990·3 cites·17 claims
- 2636US4629542AProcess for preparing 3-exomethylenecepham derivativesOTSUKA KAGAKU KK·Filed 1985·Granted Dec 16, 1986·2 cites·14 claims
- 2733US5905147AProcess for preparing β-lactam compoundOTSUKA KAGAKU KK·Filed 1996·Granted May 18, 1999·0 cites·6 claims
- 2832US6197185B1Process for preparing beta lactam compoundOTSUKA KAGAKU KK·Filed 1999·Granted Mar 6, 2001·0 cites·5 claims
- 2932US6150519AProcess for preparing β-lactam derivativesOTSUKA KAGAKU KK·Filed 1999·Granted Nov 21, 2000·0 cites·5 claims
- 3032US6011151AProcess for preparing β-lactam halide compoundOTSUKA KAGAKU KK·Filed 1996·Granted Jan 4, 2000·0 cites·4 claims
- 3132US5206361AThiazolinoazetidinone derivativeOTSUKA KAGAKU KK·Filed 1991·Granted Apr 27, 1993·1 cites·1 claims
- 3231US6448393B1Process for producing 3-cephem compoundsOTSUKA KAGAKU KK·Filed 1998·Granted Sep 10, 2002·0 cites·4 claims
- 3331US5986091AProcess for preparation of β-lactam compoundsOTSUKA KAGAKU KK·Filed 1996·Granted Nov 16, 1999·0 cites·6 claims
- 3431US5977352AProcess for preparing 3-norcephem compoundsOTSUKA KAGAKU KK·Filed 1997·Granted Nov 2, 1999·0 cites·3 claims
- 3530US5288860AProcess for preparing thiazolino azetidinone and 2-exo-methylenepenam derivativeOTSUKA KAGAKU KASBUSHIKI KAISH·Filed 1993·Granted Feb 22, 1994·2 cites·2 claims
- 3630US5142040AProcess for preparing a 3-formylcephem derivativeOTSUKA KAGAKU KK·Filed 1991·Granted Aug 25, 1992·0 cites·3 claims
- 3729US6339152B1Process for producing exo-methylenepenam compoundsOTSUKA KAGAKU KK·Filed 1998·Granted Jan 15, 2002·0 cites·4 claims
- 3826US5919924AProcess for preparing 3-halogenated cephem derivativeOTSUKA KAGAKU KK·Filed 1996·Granted Jul 6, 1999·0 cites·10 claims
- 3925US6420554B1Process for preparation of 3-cephem compoundOTSUKA KAGAKU KK·Filed 1999·Granted Jul 16, 2002·1 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →