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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing methylene disulfonate compound
Patent number
12,129,239
Issue date
Oct 29, 2024
Sumitomo Seika Chemicals Co., Ltd.
Seiya Ashibe
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Laminate of conductor and insulating coating, coil, rotating electr...
Patent number
11,955,258
Issue date
Apr 9, 2024
Sumitomo Seika Chemicals Co., Ltd.
Noriyuki Hayashizaka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing cyclic disulfonic acid ester compound
Patent number
11,802,119
Issue date
Oct 31, 2023
Sumitomo Seika Chemicals Co., Ltd.
Seiji Bando
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for producing a methylene disulfonate compound
Patent number
8,501,966
Issue date
Aug 6, 2013
Sumitomo Seika Chemicals Co., Ltd.
Seiji Bando
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method for manufacturing sulfolene compound and method for manufact...
Patent number
8,436,193
Issue date
May 7, 2013
Sumitomo Seika Chemicals Co., Ltd.
Seiji Bando
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Process for producing 2-acylthiophene compound
Patent number
7,659,411
Issue date
Feb 9, 2010
Sumitomo Seika Chemicals Co., Ltd.
Seiji Bando
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR PRODUCING CYCLIC DISULFONIC ACID ESTER COMPOUND
Publication number
20220251060
Publication date
Aug 11, 2022
Sumitomo Seika Chemicals Co., Ltd.
Seiji BANDO
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PRODUCING METHYLENE DISULFONATE COMPOUND
Publication number
20220251059
Publication date
Aug 11, 2022
Sumitomo Seika Chemicals Co., Ltd.
Seiya ASHIBE
C07 - ORGANIC CHEMISTRY
Information
Patent Application
LAMINATE OF CONDUCTOR AND INSULATING COATING, COIL, ROTATING ELECTR...
Publication number
20210202128
Publication date
Jul 1, 2021
SUMITOMO SEIKA CHEMICALS CO., LTD.
Noriyuki HAYASHIZAKA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
HEAT DISSIPATION FILM, DISPERSION LIQUID FOR HEAT EMISSION LAYER, M...
Publication number
20170047267
Publication date
Feb 16, 2017
SUMITOMO SEIKA CHEMICALS CO., LTD.
Yuki UMEDA
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Application
VAPOR BARRIER FILM, DISPERSION FOR VAPOR BARRIER FILM, METHOD FOR P...
Publication number
20140251426
Publication date
Sep 11, 2014
SUMITOMO SEIKA CHEMICALS CO., LTD.
Seiji Bando
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
COMPOSITE MATERIAL
Publication number
20140221548
Publication date
Aug 7, 2014
NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
Takeo Ebina
B32 - LAYERED PRODUCTS
Information
Patent Application
NON-COMBUSTIBLE FILM, DISPERSION LIQUID FOR NON-COMBUSTIBLE FILMS,...
Publication number
20140154490
Publication date
Jun 5, 2014
SUMITOMO SEIKA CHEMICALS CO., LTD.
Seiji Bando
B32 - LAYERED PRODUCTS
Information
Patent Application
METHOD FOR PRODUCING A METHYLENE DISULFONATE COMPOUND
Publication number
20130137881
Publication date
May 30, 2013
Sumitomo Seika Chemicals Co., Ltd.
Seiji Bando
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR MANUFACTURING SULFOLENE COMPOUND AND METHOD FOR MANUFACT...
Publication number
20110288307
Publication date
Nov 24, 2011
SUMITOMO SEIKA CHEMICALS CO., LTD.
Seiji Bando
C07 - ORGANIC CHEMISTRY
Information
Patent Application
METHOD FOR PURIFICATION OF PYRIDINE, AND METHOD FOR PRODUCTION OF C...
Publication number
20100324299
Publication date
Dec 23, 2010
Sumitomo Seika Chemicals Co., Ltd.
Naohiro Yoshikawa
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Process for producing 2-acylthiophene compound
Publication number
20070149787
Publication date
Jun 28, 2007
Sumitomo Seika Chemicals Co., Ltd.
Seiji Bando
C07 - ORGANIC CHEMISTRY