Assignee
TOKUYAMA CORP
JP·403 granted patents·230 pending applications·3,809 citations·filing 1991–2025
Top patents by PatentIndex Score
633 records- 0198US5621017APhotochromic composition and method producing photochromic cured productTOKUYAMA CORP·Filed 1995·Granted Apr 15, 1997·172 cites·14 claims
- 0295US10526533B2Process for producing a photochromic cured bodyTOKUYAMA CORP·Filed 2016·Granted Jan 7, 2020·5 cites·15 claims
- 0394US6469076B1Chromene compoundsTOKUYAMA CORP·Filed 2000·Granted Oct 22, 2002·23 cites·14 claims
- 0494US5395566APhotochromic compositionTOKUYAMA CORP·Filed 1993·Granted Mar 7, 1995·47 cites·16 claims
- 0593US11066523B2Photochromic polyrotaxane compound and curable composition comprising the photochromic polyrotaxane compoundTOKUYAMA CORP·Filed 2018·Granted Jul 20, 2021·3 cites·19 claims
- 0693US6723859B2Chromene compoundTOKUYAMA CORP·Filed 2000·Granted Apr 20, 2004·45 cites·12 claims
- 0793US5473120AMultilayer board and fabrication method thereofTOKUYAMA CORP·Filed 1995·Granted Dec 5, 1995·136 cites·8 claims
- 0892US12195658B2Treatment liquid for semiconductor wafersTOKUYAMA CORP·Filed 2021·Granted Jan 14, 2025·2 cites·10 claims
- 0992US6878853B2Process for preparing dihalogenated adamantanesTOKUYAMA CORP·Filed 2002·Granted Apr 12, 2005·27 cites·5 claims
- 1091US5780154ABoron nitride fiber and process for production thereofTOKUYAMA CORP·Filed 1995·Granted Jul 14, 1998·84 cites·40 claims
- 1191US5776376APhotochromic curable compositionTOKUYAMA CORP·Filed 1996·Granted Jul 7, 1998·79 cites·14 claims
- 1290US11390577B2Quaternary alkyl ammonium hypochlorite solution, method of producing the same, and method for processing semiconductor wafersTOKUYAMA CORP·Filed 2020·Granted Jul 19, 2022·2 cites·12 claims
- 1390US9748410B2N-type aluminum nitride single-crystal substrate and vertical nitride semiconductor deviceTOKUYAMA CORP·Filed 2014·Granted Aug 29, 2017·11 cites·8 claims
- 1490US7825422B2Ceramic substrate for mounting a light emitting element and method for manufacturing the sameTOKUYAMA CORP·Filed 2005·Granted Nov 2, 2010·20 cites·6 claims
- 1590US7718456B2Package for housing light-emitting element and method for manufacturing package for housing light-emitting elementTOKUYAMA CORP·Filed 2005·Granted May 18, 2010·22 cites·2 claims
- 1690US6933327B2Dental curable compositionTOKUYAMA CORP·Filed 2001·Granted Aug 23, 2005·34 cites·14 claims
- 1790US6340765B1Chromene compoundTOKUYAMA CORP·Filed 2000·Granted Jan 22, 2002·30 cites·26 claims
- 1890US5904159APolishing slurries and a process for the production thereofTOKUYAMA CORP·Filed 1996·Granted May 18, 1999·94 cites·12 claims
- 1990US5430146ASpirooxazine compoundsTOKUYAMA CORP·Filed 1994·Granted Jul 4, 1995·18 cites·6 claims
- 2089US11214892B2Method for manufacturing polycrystalline silicon fragment and method for managing surface metal concentration of polycrystalline silicon fragmentTOKUYAMA CORP·Filed 2018·Granted Jan 4, 2022·2 cites·16 claims
- 2189US6660784B2Dental catalyst for chemical polymerization and use thereofTOKUYAMA CORP·Filed 2001·Granted Dec 9, 2003·31 cites·9 claims
- 2288US10920007B2Urethane resin comprising a polyrotaxane and polishing padTOKUYAMA CORP·Filed 2017·Granted Feb 16, 2021·3 cites·13 claims
- 2388US8349165B2Process for producing an active cathode for electrolysisTOKUYAMA CORP·Filed 2009·Granted Jan 8, 2013·7 cites·7 claims
- 2488US6815470B2Dental catalyst for chemical polymerization and use thereofTOKUYAMA CORP·Filed 2003·Granted Nov 9, 2004·27 cites·3 claims
- 2588US5910516AProcess for production of photochromic cured productTOKUYAMA CORP·Filed 1996·Granted Jun 8, 1999·89 cites·15 claims
- 2687US11505872B2Gas production apparatus and gas production methodTOKUYAMA CORP·Filed 2019·Granted Nov 22, 2022·2 cites·13 claims
- 2787US7737461B2Package for storing light emitting element and method for producing package for storing light emitting elementTOKUYAMA CORP·Filed 2005·Granted Jun 15, 2010·10 cites·8 claims
- 2887US6932954B2Method for producing siliconTOKUYAMA CORP·Filed 2002·Granted Aug 23, 2005·29 cites·6 claims
- 2987US6340374B1Polishing slurry and polishing methodTOKUYAMA CORP·Filed 2000·Granted Jan 22, 2002·36 cites·16 claims
- 3087US5609675AInorganic compositionTOKUYAMA CORP·Filed 1995·Granted Mar 11, 1997·113 cites·15 claims
- 3187US5462698APhotochromic compositionTOKUYAMA CORP·Filed 1994·Granted Oct 31, 1995·21 cites·15 claims
- 3286US12065590B2Adhesive composition, laminate and optical article comprising the laminateTOKUYAMA CORP·Filed 2023·Granted Aug 20, 2024·0 cites·6 claims
- 3386US7906565B2Tissue conditioner for dental useTOKUYAMA CORP·Filed 2006·Granted Mar 15, 2011·5 cites·7 claims
- 3486US7803341B2Fine dry silica particlesTOKUYAMA CORP·Filed 2007·Granted Sep 28, 2010·12 cites·11 claims
- 3586US6740267B1Method of producing ceramic crownsTOKUYAMA CORP·Filed 2000·Granted May 25, 2004·27 cites·22 claims
- 3686US6146557AFire resistant resin compositionTOKUYAMA CORP·Filed 1998·Granted Nov 14, 2000·64 cites·10 claims
- 3785US9809682B2Hydrophobized spherical polyalkylsilsesquioxane fine particle, external additive for toner, dry toner for electrophotography, and method of manufacturing hydrophobized spherical polyalkylsilsesquioxane fine particleTOKUYAMA CORP·Filed 2015·Granted Nov 7, 2017·7 cites·17 claims
- 3885US7923166B2Separating membrane for fuel cellTOKUYAMA CORP·Filed 2006·Granted Apr 12, 2011·14 cites·6 claims
- 3985US7700800B2Method for producing fluorine-containing alkyl (meth)acrylateTOKUYAMA CORP·Filed 2006·Granted Apr 20, 2010·5 cites·5 claims
- 4085US7365106B2Cationically curable composition for dental useTOKUYAMA CORP·Filed 2005·Granted Apr 29, 2008·3 cites·6 claims
- 4185US5808100AChromene compounds and photochromic materialsTOKUYAMA CORP·Filed 1996·Granted Sep 15, 1998·34 cites·15 claims
- 4284US11325830B2Aluminum nitride particleTOKUYAMA CORP·Filed 2018·Granted May 10, 2022·2 cites·12 claims
- 4384US7741381B2Curable compositionTOKUYAMA CORP·Filed 2006·Granted Jun 22, 2010·7 cites·4 claims
- 4484US7441893B2Layered product and method of producing the sameTOKUYAMA CORP·Filed 2005·Granted Oct 28, 2008·6 cites·10 claims
- 4584US6861144B2Polycrystalline silicon and process and apparatus for producing the sameTOKUYAMA CORP·Filed 2001·Granted Mar 1, 2005·26 cites·14 claims
- 4684US6849670B2Photo-curable reparative material for dental useTOKUYAMA CORP·Filed 2001·Granted Feb 1, 2005·17 cites·11 claims
- 4784US6338744B1Polishing slurry and polishing methodTOKUYAMA CORP·Filed 2000·Granted Jan 15, 2002·29 cites·9 claims
- 4884US5976481APolycrystal silicon rod and production process thereforTOKUYAMA CORP·Filed 1997·Granted Nov 2, 1999·52 cites·3 claims
- 4984US5445862APorous film and process for production thereofTOKUYAMA CORP·Filed 1994·Granted Aug 29, 1995·43 cites·38 claims
- 5084US2025043442A1Membrane-electrode-gasket assembly for alkaline water electrolysisTOKUYAMA CORP·Filed 2024·Application pending·0 cites
Showing the top 50 of 633 patent records by PatentIndex Score.
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