Inventor · disambiguated record
Kazutoshi Hayakawa
Also filed as: HAYAKAWA KAZUTOSHI
8 granted patents·17 pending applications·41 citations·filing 2003–2021
82Inventor score
Top patents by PatentIndex Score
25 records- 0181US7258921B2Composite particle with a carbodiimide resin layer and a process for producing the sameNISSHIN SPINNING·Filed 2003·Granted Aug 21, 2007·21 cites·11 claims
- 0275US10729623B2Method for producing elliptical, needle-shaped, or rod-shaped polymer particlesNISSHINBO HOLDINGS INC·Filed 2016·Granted Aug 4, 2020·1 cites·5 claims
- 0371US10584193B2Flat elliptical polymer particles, and use thereofNISSHINBO HOLDINGS INC·Filed 2016·Granted Mar 10, 2020·1 cites·24 claims
- 0467US6866934B2Carbodiimide-containing hardening type reactive particles, process for producing the same, and use of the sameNISSHIN SPINNING·Filed 2003·Granted Mar 15, 2005·11 cites·17 claims
- 0564US7387832B2Flat particles and process for production thereofNISSHIN SPINNING·Filed 2003·Granted Jun 17, 2008·6 cites·15 claims
- 0661US2025019492A1Marine biodegradable polymer compound, marine biodegradation promoter, and marine biodegradable resin compositionNISSHINBO HOLDINGS INC·Filed 2021·Application pending·0 cites
- 0761US2025026878A1Marine biodegradable polyol, marine biodegradable polymer compound, and marine biodegradable resin compositionNISSHINBO HOLDINGS INC·Filed 2021·Application pending·0 cites
- 0860US2025011570A1Marine biodegradation promoter having hydrocarbon group, and marine biodegradable compositionNISSHINBO HOLDINGS INC·Filed 2021·Application pending·0 cites
- 0960US2025034360A1Marine biodegradation promoter having two or more monovalent organic anions, and marine biodegradable compositionNISSHINBO HOLDINGS INC·Filed 2021·Application pending·0 cites
- 1057US12441850B2Amphiphilic alginic acid particle group and method for producing sameNISSHINBO HOLDINGS INC·Filed 2021·Granted Oct 14, 2025·0 cites·18 claims
- 1156US2023287210A1Marine-biodegradation acceleratorNISSHINBO HOLDINGS INC·Filed 2021·Application pending·0 cites
- 1249US2016262988A1Ultraviolet scattering agent and application thereforNISSHINBO HOLDINGS INC·Filed 2014·Application pending·0 cites
- 1348US11225541B2Production method for disc-shaped polymer particlesNISSHINBO HOLDINGS INC·Filed 2019·Granted Jan 18, 2022·0 cites·10 claims
- 1447US2019254938A1Skin cosmeticsNISSHINBO HOLDINGS INC·Filed 2017·Application pending·0 cites
- 1546US9093196B2Conductive particles and method of preparing the sameHASHIBA TOSHIFUMI·Filed 2007·Granted Jul 28, 2015·1 cites·14 claims
- 1645US2006188577A1Element having bioactive substance fixed theretoKIMURA NAOKI·Filed 2004·Application pending·0 cites
- 1745US2007185240A1Inorganic-organic composite flame retardant compositionNISSHIN SPINNING·Filed 2004·Application pending·0 cites
- 1845US2008124552A1Particle With Rough Surface For Plating Or Vapor DepositionNISSHIN SPINNING·Filed 2005·Application pending·0 cites
- 1945US2020054535A1Skin cosmeticNISSHINBO HOLDINGS INC·Filed 2018·Application pending·0 cites
- 2043US2007244241A1Resin CompositionNISSHIN SPINNING·Filed 2005·Application pending·0 cites
- 2142US2018118867A1Elliptical, needle-shaped, or rod-shaped crosslinked polymer particles, and use thereofNISSHINBO HOLDINGS INC·Filed 2016·Application pending·0 cites
- 2241US2005118424A1Carbodiimide-containing hardening type reactive particles, process for producing the same, and use of the sameFiled 2005·Application pending·0 cites
- 2341US2007054123A1Oval-spherical organic polymer particles and method of productionNISSHIN SPINNING·Filed 2006·Application pending·0 cites
- 2437US2007142595A1Oval-spherical organic polymer particle and process for producing the sameNISSHIN SPINNING·Filed 2005·Application pending·0 cites
- 2537US2008020207A1Particle With Rough Surface And Process For Producing The SameNISSHIN SPINNING·Filed 2005·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Kazutoshi Hayakawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →