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Keisuke Shimokawa
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing aromatic nitrile compound and method for produ...
Patent number
11,673,856
Issue date
Jun 13, 2023
Mitsubishi Gas Chemical Company, Inc.
Hidefumi Harada
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Polycarbonate resin composition
Patent number
11,427,679
Issue date
Aug 30, 2022
Mitsubishi Engineering-Plastics Corporation
Keisuke Tomita
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Manufacturing method for high molecular weight aromatic polycarbona...
Patent number
11,021,571
Issue date
Jun 1, 2021
Mitsubishi Gas Chemical Company, Inc.
Yoshinori Isahaya
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing dialkyl carbonate
Patent number
11,014,869
Issue date
May 25, 2021
Mitsubishi Gas Chemical Company, Inc.
Keisuke Shimokawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Manufacturing method for high molecular weight aromatic polycarbona...
Patent number
10,927,216
Issue date
Feb 23, 2021
Mitsubishi Gas Chemical Company, Inc.
Yoshinori Isahaya
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
High molecular weight aromatic polycarbonate resin manufacturing me...
Patent number
10,894,860
Issue date
Jan 19, 2021
Mitsubishi Gas Chemical Company, Inc.
Yoshinori Isahaya
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing carbonate compound and method for producing ar...
Patent number
9,221,740
Issue date
Dec 29, 2015
Asahi Glass Company, Limited
Hidekazu Okamoto
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR PRODUCING AROMATIC NITRILE COMPOUND AND METHOD FOR PRODU...
Publication number
20230348367
Publication date
Nov 2, 2023
Mitsubishi Gas Chemical Company, Inc.
Hidefumi HARADA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
POLYCARBONATE RESIN
Publication number
20220389159
Publication date
Dec 8, 2022
Mitsubishi Gas Chemical Company, Inc.
Tomoya TSUJIMURA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
POLYCARBONATE RESIN, METHOD FOR PRODUCING SAME, POLYCARBONATE RESIN...
Publication number
20220356346
Publication date
Nov 10, 2022
Mitsubishi Gas Chemical Company, Inc.
Keisuke SHIMOKAWA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
POLYCARBONATE RESIN
Publication number
20220259373
Publication date
Aug 18, 2022
Mitsubishi Gas Chemical Company, Inc.
Keisuke SHIMOKAWA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYCARBONATE RESIN COMPOSITION AND AROMATIC POLYCARBONATE...
Publication number
20220177646
Publication date
Jun 9, 2022
Mitsubishi Gas Chemical Company, Inc.
Yoshinori ISAHAYA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING AROMATIC NITRILE COMPOUND AND METHOD FOR PRODU...
Publication number
20210261496
Publication date
Aug 26, 2021
Mitsubishi Gas Chemical Company, Inc.
Hidefumi HARADA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
POLYCARBONATE RESIN COMPOSITION
Publication number
20210087333
Publication date
Mar 25, 2021
Mitsubishi Engeering-Platics Corporation
Keisuke TOMITA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING DIALKYL CARBONATE
Publication number
20200239402
Publication date
Jul 30, 2020
Mitsubishi Gas Chemical Company, Inc.
Keisuke SHIMOKAWA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
MANUFACTURING METHOD FOR HIGH MOLECULAR WEIGHT AROMATIC POLYCARBONA...
Publication number
20200216611
Publication date
Jul 9, 2020
Mitsubishi Gas Chemical Company, Inc.
Yoshinori ISAHAYA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
HIGH MOLECULAR WEIGHT AROMATIC POLYCARBONATE RESIN MANUFACTURING ME...
Publication number
20190119441
Publication date
Apr 25, 2019
Mitsubishi Gas Chemical Company, Inc.
Yoshinori ISAHAYA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
MANUFACTURING METHOD FOR HIGH MOLECULAR WEIGHT AROMATIC POLYCARBONA...
Publication number
20190092901
Publication date
Mar 28, 2019
Mitsubishi Gas Chemical Company, Inc.
Yoshinori ISAHAYA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
AROMATIC POLYCARBONATE RESIN COMPOSITION AND AROMATIC POLYCARBONATE...
Publication number
20190085123
Publication date
Mar 21, 2019
Mitsubishi Gas Chemical Company, Inc.
Yoshinori ISAHAYA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING CARBONATE COMPOUND AND METHOD FOR PRODUCING AR...
Publication number
20150152037
Publication date
Jun 4, 2015
ASAHI GLASS COMPANY, LIMITED
Hidekazu OKAMOTO
C07 - ORGANIC CHEMISTRY