Inventor · disambiguated record
Shigekazu Matsui
Also filed as: MATSUI SHIGEKAZU
31 granted patents·6 pending applications·875 citations·filing 1983–2010
98Inventor score
Top patents by PatentIndex Score
37 records- 0198US7300903B2Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and α-olefin/conjugated diene copolymersMITSUI CHEMICALS INC·Filed 2005·Granted Nov 27, 2007·56 cites·20 claims
- 0298US6309997B1Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and α-olefin/conjugated diene copolymersMITSUI CHEMICALS INC·Filed 1998·Granted Oct 30, 2001·186 cites·15 claims
- 0395US6339197B1Multilayer printed circuit board and the manufacturing methodHOYA CORP·Filed 2000·Granted Jan 15, 2002·153 cites·16 claims
- 0494US6875718B2Olefin polymerization catalysts, transition metal compounds, processes for olefin polymerization, and α-olefin/conjugated diene copolymersMITSUI CHEMICALS INC·Filed 2001·Granted Apr 5, 2005·40 cites·15 claims
- 0591US6838540B2Olefin polymer and production processes thereofMITSUI CHEMICALS INC·Filed 2001·Granted Jan 4, 2005·33 cites·17 claims
- 0691US6770723B2α-olefin/conjugated diene copolymersMITSUI CHEMICALS INC·Filed 2001·Granted Aug 3, 2004·28 cites·8 claims
- 0790US8188191B2Polyolefin polymer containing vinyl groups at both ends and composition thereofIKENAGA SHIGENOBU·Filed 2007·Granted May 29, 2012·14 cites·13 claims
- 0888US7470865B2Multilayer printed wiring board and a process of producing sameHOYA CORP·Filed 2006·Granted Dec 30, 2008·15 cites·10 claims
- 0985US6476276B2Process for preparation of hydroperoxidesMITSUI CHEMICALS INC·Filed 2001·Granted Nov 5, 2002·14 cites·10 claims
- 1082US6897176B2Olefin polymerization catalyst and process for producing olefin polymer with the catalystMITSUI CHEMICALS INC·Filed 2002·Granted May 24, 2005·20 cites·5 claims
- 1181US6593266B1Olefin polymerization catalyst and polymerization processMITSUI CHEMICALS INC·Filed 1999·Granted Jul 15, 2003·42 cites·25 claims
- 1280US6399724B1Catalyst for olefin polymerization and method of polymerizing olefinMITSUI CHEMICALS INC·Filed 1999·Granted Jun 4, 2002·41 cites·11 claims
- 1379US6291718B1Process for preparing hydroperoxidesMITSUI CHEMICALS INC·Filed 1998·Granted Sep 18, 2001·18 cites·24 claims
- 1479US4530891APhoto-mask blank for use in lithography including a modified chromium compoundHOYA ELECTRONICS CO LTD·Filed 1983·Granted Jul 23, 1985·35 cites·20 claims
- 1578US7053159B2Process for producing polar olefin copolymer and polar olefin copolymer obtained therebyMITSUI CHEMICALS INC·Filed 2001·Granted May 30, 2006·13 cites·3 claims
- 1677US6369177B1Catalyst for olefin polymerization and method of polymerizing olefinMITSUI CHEMICALS INC·Filed 1999·Granted Apr 9, 2002·34 cites·10 claims
- 1776US7009014B2Process for the polymerization olefinsMITSUI CHEMICALS INC·Filed 2001·Granted Mar 7, 2006·14 cites·3 claims
- 1872US8338557B2Olefin polymer and process for preparing the sameMITANI MAKOTO·Filed 2008·Granted Dec 25, 2012·2 cites·4 claims
- 1970US4563407APhoto-mask blank comprising a shading layer having a variable etch rateHOYA CORP·Filed 1983·Granted Jan 7, 1986·20 cites·17 claims
- 2068USD543160SPhotomask blankHOYA CORP·Filed 2004·Granted May 22, 2007·13 cites·1 claims
- 2167US7312284B2Process for producing polar olefin copolymer and polar olefin copolymer obtained therebyMITSUI CHEMICALS INC·Filed 2005·Granted Dec 25, 2007·1 cites·3 claims
- 2266US6451728B1Olefin polymerization catalyst and process for olefin polymerizationMITSUI CHEMICALS INC·Filed 1999·Granted Sep 17, 2002·20 cites·18 claims
- 2365US5847227AMethod for producing aryl alkyl hydroperoxidesMITSUI PETROCHEMICAL IND·Filed 1996·Granted Dec 8, 1998·7 cites·11 claims
- 2461US4657648AMethod of manufacturing a mask blank including a modified chromium compoundNAGAREKAWA OSAMU·Filed 1984·Granted Apr 14, 1987·18 cites·7 claims
- 2560US7566761B2Olefin polymer and process for preparing the sameMITSUI CHEMICALS INC·Filed 2004·Granted Jul 28, 2009·3 cites·10 claims
- 2659US6019911APolycyclic compound, liquid crystal material consisting of the polycyclic compound, liquid crystal composition comprising the liquid crystal material, and liquid crystal elementMITSUI CHEMICALS INC·Filed 1996·Granted Feb 1, 2000·8 cites·15 claims
- 2758USD568839SPhotomask blankHOYA CORP·Filed 2007·Granted May 13, 2008·9 cites·1 claims
- 2852US4696877APhoto-mask blank comprising a shading layer having a variable etch rateHOYA CORP·Filed 1986·Granted Sep 29, 1987·12 cites·6 claims
- 2950US2007260026A1Catalyst for Olefin Polymerization Process for Producing Olefin Polymer, Olefin Copolymer, Novel Transition Metal Compound, and Process for Producing Transition Metal CompoundMITSUI CHEMICALS INC·Filed 2005·Application pending·0 cites
- 3048US2010267908A1Catalyst for olefin polymerization, process for producing olefin polymer, olefin copolymer, novel transition metal compound, and process for producing transition metal compoundMITSUI CHEMICALS INC·Filed 2010·Application pending·0 cites
- 3147US2006000640A1Multilayer printed wiring board and a process of producing sameHOYA CORP·Filed 2005·Application pending·0 cites
- 3244US6313243B1Catalyst for olefin polymerization and method of polymerizing olefinMITSUI CHEMICALS INC·Filed 1999·Granted Nov 6, 2001·6 cites·7 claims
- 3343US2009234073A1Alpha-Olefin/non-conjugated cyclic polyene copolymers, production processes thereof, and crosslinkable compositions including the copolymerMITSUI CHEMICALS INC·Filed 2006·Application pending·0 cites
- 3438US2002100608A1Multilayer printed wiring board and a process of producing sameHOYA CORP·Filed 2001·Application pending·0 cites
- 3538US2005176890A1Process for producing ethylene /alpha-olefin/unconjugated polyene copolymer, and ethylene/alpha-olefin/unconjugated polyene copolymerFiled 2004·Application pending·0 cites
- 3634US6028193AMethod for producing aryl aklyl hydroperoxidesMITSUI CHEMICALS INC·Filed 1999·Granted Feb 22, 2000·0 cites·4 claims
- 3734US5945572AMethod for producing aryl alkyl hydroperoxidesMITSUI CHEMICALS INC·Filed 1998·Granted Aug 31, 1999·0 cites·17 claims
Join the waitlist — get patent alerts
Get an alert when Shigekazu Matsui 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 →