Assignee
YAMAMOTO CHEMICALS INC
JP·23 granted patents·3 pending applications·108 citations·filing 1988–2021
Top patents by PatentIndex Score
26 records- 0181US6066729APhotothermal conversion materialYAMAMOTO CHEMICALS INC·Filed 1998·Granted May 23, 2000·20 cites·10 claims
- 0279US6468713B1Phthalocyanine compounds, process for producing the same, and near infrared absorbent comprising the sameYAMAMOTO CHEMICALS INC·Filed 2000·Granted Oct 22, 2002·13 cites·14 claims
- 0374US6969764B2Optical recording medium and novel azaporphyrin compoundsYAMAMOTO CHEMICALS INC·Filed 2000·Granted Nov 29, 2005·20 cites·12 claims
- 0461US7485404B2Nonsolvate-form crystal of polymethine compound and process for producing the sameYAMAMOTO CHEMICALS INC·Filed 2004·Granted Feb 3, 2009·2 cites·10 claims
- 0557US7446212B2Polymethine ethersYAMAMOTO CHEMICALS INC·Filed 2004·Granted Nov 4, 2008·2 cites·7 claims
- 0657US6342335B1Polymethine compounds, method of producing same, and use thereofYAMAMOTO CHEMICALS INC·Filed 2000·Granted Jan 29, 2002·15 cites·15 claims
- 0756US7709660B2Polymethine ether compoundsYAMAMOTO CHEMICALS INC·Filed 2008·Granted May 4, 2010·0 cites·2 claims
- 0856US6261737B1Polymethine compounds, method of producing same, and use thereofYAMAMOTO CHEMICALS INC·Filed 1999·Granted Jul 17, 2001·6 cites·10 claims
- 0956US5973140APhthalocyanine compound, its intermediate, process for producing the compound, and use thereofYAMAMOTO CHEMICALS INC·Filed 1998·Granted Oct 26, 1999·5 cites·14 claims
- 1053US6716993B2Polymethine compound and near-infrared absorbing material comprising sameYAMAMOTO CHEMICALS INC·Filed 2003·Granted Apr 6, 2004·2 cites·13 claims
- 1151USRE39105EPolymethine compounds, method of producing same, and use thereofYAMAMOTO CHEMICALS INC·Filed 2004·Granted May 23, 2006·3 cites·15 claims
- 1251US4820840AProcess for producing fluorene compoundsYAMAMOTO CHEMICALS INC·Filed 1988·Granted Apr 11, 1989·4 cites·27 claims
- 1349US11326066B2Ink composition for PTP package, and inkYAMAMOTO CHEMICALS INC·Filed 2018·Granted May 10, 2022·0 cites·2 claims
- 1449US11015061B2Phthalocyanine-based compound and uses of sameYAMAMOTO CHEMICALS INC·Filed 2018·Granted May 25, 2021·0 cites·12 claims
- 1549US5110952AMethod of producing 3-dibutylamino 6-methyl-7-anilinofluoranYAMAMOTO CHEMICALS INC·Filed 1990·Granted May 5, 1992·4 cites·5 claims
- 1647US11174274B2Naphthalocyanine compound, method for producing same, and use thereofYAMAMOTO CHEMICALS INC·Filed 2018·Granted Nov 16, 2021·0 cites·13 claims
- 1747US2024101849A1Printed materialYAMAMOTO CHEMICALS INC·Filed 2021·Application pending·0 cites
- 1843US5627287APhthalide compound and a near infrared absorber and a recording material each comprising the same compoundYAMAMOTO CHEMICALS INC·Filed 1995·Granted May 6, 1997·7 cites·19 claims
- 1941US2008091033A1Nonsolvate-Form Crystal of Polymethine Compound, Process for Producing the Same and Use ThereofYAMAMOTO CHEMICALS INC·Filed 2005·Application pending·0 cites
- 2040US5342967ACrystal modifications of 2-M-toluidino-3-methyl-6-di-N-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modificationsYAMAMOTO CHEMICALS INC·Filed 1992·Granted Aug 30, 1994·1 cites·10 claims
- 2137US6093832ADiiminoisoindoline compound and the process for producing the compound and use thereofYAMAMOTO CHEMICALS INC·Filed 1999·Granted Jul 25, 2000·1 cites·17 claims
- 2237US5376617ACrystal modification of 2-(3-methylanilion)-3-methyl-6-diethylamino-fluoran, process for the preparation thereof, and recording materials containing said crystal modificationYAMAMOTO CHEMICALS INC·Filed 1994·Granted Dec 27, 1994·2 cites·4 claims
- 2337US2005142322A1Optical recording media and dipyrrpomethene-metal chelate compoundsYAMAMOTO CHEMICALS INC·Filed 2003·Application pending·0 cites
- 2435US5338866ACrystal modification of 2-(3-methylanilino)-3-methyl-6-diethylaminofluoran, process for the preparation thereof, and recording materials containing said crystal modificationYAMAMOTO CHEMICALS INC·Filed 1992·Granted Aug 16, 1994·1 cites·4 claims
- 2531US5438032ACrystal modifications of 2-m-toluidino-3-methyl-6-di-n-butylaminofluoran, process for preparing thereof, and recording materials containing said crystal modificationsYAMAMOTO CHEMICALS INC·Filed 1994·Granted Aug 1, 1995·0 cites·9 claims
- 2628US5990353AProcess for producing arylsulfonylureide compoundsYAMAMOTO CHEMICALS INC·Filed 1998·Granted Nov 23, 1999·0 cites·4 claims
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