Hirotsu; Kenji

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hirotsu; Kenji.The latest application filed is for "polyimide precursor and polyimide".

Company Profile

0.25.31

Hirotsu; Kenji - Ube JP
Hirotsu; Kenji - Ube-shi JP
Hirotsu; Kenji - Yamaguchi JP
Hirotsu; Kenji - Oaza Kogushi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Polyimide precursor and polyimide Grant 9,758,623 - Takasawa , et al. September 12, 2	2017-09-12
Polyimide Precursor And Polyimide App 20160032056 - Takasawa; Ryoichi ; et al.	2016-02-04
Method for producing alkanediol Grant 9,051,234 - Yoshida , et al. June 9, 2	2015-06-09
Method for producing high-purity 1,5-pentanediol Grant 8,940,946 - Yoshida , et al. January 27, 2	2015-01-27
Process for preparing polycarbonate diol diacrylate and high-purity polycarbonate diol diacrylate Grant 8,901,254 - Yoshida , et al. December 2, 2	2014-12-02
Method For Producing Alkanediol App 20140316167 - Yoshida; Yasutaka ; et al.	2014-10-23
Method For Producing High-purity 1,5-pentanediol App 20140309461 - Yoshida; Yasutaka ; et al.	2014-10-16
Polyimide Precursor And Polyimide App 20140066571 - Takasawa; Ryoichi ; et al.	2014-03-06
Process for producing quinazolin-4-one derivative Grant 8,367,824 - Nishino , et al. February 5, 2	2013-02-05
Process For Preparing Polycarbonate Diol Diacrylate And High-purity Polycarbonate Diol Diacrylate App 20130023630 - Yoshida; Youichi ; et al.	2013-01-24
Process for producing 4-aminoquinazoline compound Grant 8,318,932 - Nishino , et al. November 27, 2	2012-11-27
Resin composition for stereolithography Grant 8,293,448 - Ito , et al. October 23, 2	2012-10-23
3-ethyloxethane compound having hydroxyl group and method for producing the same Grant 8,247,583 - Hirotsu , et al. August 21, 2	2012-08-21
Process for preparation of 6, 7-bis(2-methoxyethoxy) quinazolin-4-one Grant 8,133,999 - Nishino , et al. March 13, 2	2012-03-13
3-ethyloxethane Compound Having Hydroxyl Group And Method For Producing The Same App 20100174098 - Hirotsu; Kenji ; et al.	2010-07-08
Processes for preparing tetrahydropyran-4-one and pyran-4-one Grant 7,745,649 - Nishino , et al. June 29, 2	2010-06-29
Processes for preparing alkyl 3-(4-tetrahydropyranyl)-3-oxopropanoate compound and 4-acyltetrahydropyrane Grant 7,741,497 - Nishino , et al. June 22, 2	2010-06-22
Process for preparing 4-aminopyrimidine compound Grant 7,619,084 - Nishino , et al. November 17, 2	2009-11-17
Process For Preparation Of 6, 7-bis (2-methoxyethoxy) Quinazolin-4-one App 20090253909 - NISHINO; Shigeyoshi ; et al.	2009-10-08
Resin Composition For Stereolithography App 20090209674 - Ito; Takashi ; et al.	2009-08-20
Process For Producing 4-aminoquinazoline Compound App 20090171083 - NISHINO; Shigeyoshi ; et al.	2009-07-02
Process for Preparing Tetrahydropyran-4-Carboxylic Acid Compound App 20080306287 - Nishino; Shigeyoshi ; et al.	2008-12-11
Process For Producing 4-aminoquinazoline Compound App 20080177069 - NISHINO; Shigeyoshi ; et al.	2008-07-24
Process for preparing 4-aminotetrahydropyran compound and an acid salt thereof, synthetic intermediate thereof and process for preparing the same Grant 7,365,215 - Nishino , et al. April 29, 2	2008-04-29
5-fluorooxindole-3-carboxylic acid ester Grant 7,342,040 - Harada , et al. March 11, 2	2008-03-11
Process for Preparing 4-Aminopyrimidine Compound App 20080045712 - Nishino; Shigeyoshi ; et al.	2008-02-21
Process for producing tetrahydropyran-4-ol, intermediate therefor, and process for producing the same Grant 7,304,169 - Nishino , et al. December 4, 2	2007-12-04
Process for preparing nitrile compound, carboxylic acid compound or carboxylic acid ester compound Grant 7,300,953 - Nishino , et al. November 27, 2	2007-11-27
Process for producing quinazolin-4-one and derivatives thereof Grant 7,232,903 - Nishino , et al. June 19, 2	2007-06-19
Process for preparing 4-aminotetrahydropyran compound and an acid salt thereof, synthetic intermediate thereof and process for preparing the same App 20070106083 - Nishino; Shigeyoshi ; et al.	2007-05-10
Processes for preparing tetrahydropyran-4-one and pyran-4-one App 20070078272 - Nishino; Shigeyoshi ; et al.	2007-04-05
Processes for preparing alkyl 3-(4-tetrahydropyranyl)-3-oxopropanoate compound and 4-acyltetrahydropyrane App 20070043107 - Nishino; Shigeyoshi ; et al.	2007-02-22
Method for producing nitrile compound, carboxylic acid compound or carboxylate compound App 20060287541 - Nishino; Shigeyoshi ; et al.	2006-12-21
Process for producing 6, 7-bis (2-methoxyethoxy)-quinazolin-4-one App 20060276647 - Nishino; Shigeyoshi ; et al.	2006-12-07
Process for producing pyrimidin-4-one compound App 20060270849 - Nishino; Shigeyoshi ; et al.	2006-11-30
Process for producing w-cyanoaldehyde compound App 20060173205 - Fukuda; Yasuhisa ; et al.	2006-08-03
Process for producing .beta.-ketonitrile compound Grant 7,049,458 - Harada , et al. May 23, 2	2006-05-23
Process for producing tetrahydropyran-4-ol, intermediate therefor, and process for producing the same App 20050222439 - Nishino, Shigetoshi ; et al.	2005-10-06
5-Fluorooxindole-3-carboxylic acid ester App 20050182123 - Harada, Katsumasa ; et al.	2005-08-18
Process for producing 4-aminoquinazoline compound App 20050130995 - Nishino, Shigeyoshi ; et al.	2005-06-16
Process for producing quinazolin-4-one and derivatives thereof App 20050124809 - Nishino, Shigeyoshi ; et al.	2005-06-09
Process for producing 5-fluorooxindole and for producing intermediates therefor Grant 6,900,335 - Harada , et al. May 31, 2	2005-05-31
Process for producing quinazolin-4-one derivative App 20050080262 - Nishino, Shigeyoshi ; et al.	2005-04-14
Process for producing quinoline carboxyaldehyde derivative and intermediate thereof Grant 6,841,681 - Harada , et al. January 11, 2	2005-01-11
Process for producing quinoline carboxyaldehyde derivative and intermediate thereof App 20040077866 - Harda, Katsumasa ; et al.	2004-04-22
Process for producing beta-ketonitrile compound App 20040068136 - Harada, Katsumasa ; et al.	2004-04-08
4, 8-dodecadienedinitrile and process for its production Grant 6,689,895 - Harada , et al. February 10, 2	2004-02-10
Processes for producing tetrahydropyranyl-4-sulfonates and 4-aminotetrahydropyran compounds Grant 6,653,489 - Harada , et al. November 25, 2	2003-11-25
Process for producing 5-fluorooxyindole and for producing intermediates therefor App 20030181731 - Harada, Katsumasa ; et al.	2003-09-25
4, 8-dodecadienedinitrile and process for its production App 20030181751 - Harada, Katsumasa ; et al.	2003-09-25
Processes for producing tetrahydropyranyl-4-sulfonates and 4-aminotetrahydropyran compound App 20030004359 - Harada, Katsumasa ; et al.	2003-01-02
Process for producing substituted phenoxyethylamines and intermediates Grant 5,030,755 - Ataka , et al. July 9, 1	1991-07-09