Inventor · disambiguated record
Kazuharu Niwa
Also filed as: NIWA KAZUHARU
22 granted patents·3 pending applications·1,235 citations·filing 1991–2024
96Inventor score
Top patents by PatentIndex Score
25 records- 0196US7883540B2Intraocular lensKOWA CO·Filed 2006·Granted Feb 8, 2011·742 cites·25 claims
- 0290US8662663B2Hybrid soft contact lens, and production method and hydration treatment method thereofMATSUSHITA RYO·Filed 2010·Granted Mar 4, 2014·17 cites·15 claims
- 0387US7588334B2Contact lensMENICON CO LTD·Filed 2004·Granted Sep 15, 2009·41 cites·10 claims
- 0486US6242551B1Polymeric colorant and colored material for ocular lens using the colorantMENICON CO LTD·Filed 1999·Granted Jun 5, 2001·33 cites·4 claims
- 0574US7662937B2Polymerizable dye and ophthalmic lens containing the sameMENICON CO LTD·Filed 2006·Granted Feb 16, 2010·3 cites·16 claims
- 0674US6326448B1Soft intraocular lens materialMENICON CO LTD·Filed 1999·Granted Dec 4, 2001·91 cites·7 claims
- 0771US2024316241A1Ocular device case and refill container used for the ocular device caseMENICON CO LTD·Filed 2024·Application pending·0 cites
- 0870US8870371B2Colored contact lensANDO ICHIRO·Filed 2011·Granted Oct 28, 2014·5 cites·9 claims
- 0969US6320008B2Polymeric colorant and colored material for ocular lens using the colorantMENICON CO LTD·Filed 2001·Granted Nov 20, 2001·12 cites·2 claims
- 1067US6277940B1Material for a soft intraocular lensMENICON CO LTD·Filed 1999·Granted Aug 21, 2001·65 cites·6 claims
- 1166US8740977B2Intraocular lens insertion toolNIWA KAZUHARU·Filed 2008·Granted Jun 3, 2014·5 cites·10 claims
- 1266US5147902AUltraviolet light absorbing ocular lensMENICON CO LTD·Filed 1991·Granted Sep 15, 1992·59 cites·9 claims
- 1365US9072601B2Intraocular lens insertion deviceTANAKA MASAYOSHI·Filed 2009·Granted Jul 7, 2015·3 cites·5 claims
- 1462US8267996B2Intraocular lensNIWA KAZUHARU·Filed 2005·Granted Sep 18, 2012·5 cites·15 claims
- 1561US6140438ASoft intraocular lens materialMENICON CO LTD·Filed 1998·Granted Oct 31, 2000·84 cites·20 claims
- 1660US12029823B2Ocular device case and refill container used for the ocular device caseMENICON CO LTD·Filed 2019·Granted Jul 9, 2024·0 cites·16 claims
- 1760US5580498AMethod of producing contact lens with identifying mark permeating into lensMENICON CO LTD·Filed 1994·Granted Dec 3, 1996·32 cites·10 claims
- 1860US5516467AProcess for producing a tinted contact lensMENICON CO LTD·Filed 1994·Granted May 14, 1996·17 cites·10 claims
- 1956US2012253356A1Intraocular lens insertion deviceNIWA KAZUHARU·Filed 2009·Application pending·0 cites
- 2048US9713528B2Intraocular lens insertion deviceKOWA CO·Filed 2016·Granted Jul 25, 2017·0 cites·1 claims
- 2148US8523878B2Method of producing medical instrumentSATAKE KOHSUKE·Filed 2008·Granted Sep 3, 2013·0 cites·9 claims
- 2245US6015511AMethod for producing an intraocular lensMENICON CO LTD·Filed 1998·Granted Jan 18, 2000·10 cites·17 claims
- 2344US6355190B1Method of molding ophthalmic lens product, and mold assembly used in the methodMENICON CO LTD·Filed 1999·Granted Mar 12, 2002·11 cites·21 claims
- 2442US9427314B2Intraocular lens insertion toolNIWA KAZUHARU·Filed 2012·Granted Aug 30, 2016·0 cites·8 claims
- 2539US2018021475A1Intraocular lens material and method for preserving intraocular lens materialMENICON CO LTD·Filed 2016·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →