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Tsukasa SUGAWARA
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Kawasaki-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Method for producing porous film, method for producing composition...
Patent number
11,713,383
Issue date
Aug 1, 2023
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Grant
Porous film and method for producing same
Patent number
11,344,848
Issue date
May 31, 2022
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for manufacturing porous membrane
Patent number
10,865,286
Issue date
Dec 15, 2020
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Porous separator for secondary batteries and secondary battery usin...
Patent number
10,763,480
Issue date
Sep 1, 2020
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Polyimide and/or polyamideimide porous body and method for manufact...
Patent number
10,576,432
Issue date
Mar 3, 2020
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for purifying liquid, method for producing chemical solution...
Patent number
10,576,433
Issue date
Mar 3, 2020
Tokyo Ohka Kogyo Co., Ltd.
Hayato Takashima
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Purification method for purifying liquid, purification method for p...
Patent number
10,525,418
Issue date
Jan 7, 2020
Tokyo Ohka Kogyo Co., Ltd.
Yoshihiro Sawada
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Filtration filter, filtration method, production method of purified...
Patent number
10,429,738
Issue date
Oct 1, 2019
Tokyo Ohka Kogyo Co., Ltd.
Akihiko Nakata
B32 - LAYERED PRODUCTS
Information
Patent Grant
Method for producing porous polyimide film
Patent number
10,177,357
Issue date
Jan 8, 2019
Tokyo Ohka Kogyo Co., Ltd.
Mitsuharu Tobari
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing porous polyimide film, porous polyimide film a...
Patent number
9,911,955
Issue date
Mar 6, 2018
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for producing porous polyimide film, porous polyimide film a...
Patent number
9,876,208
Issue date
Jan 23, 2018
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Production method for porous polyimide resin film, porous polyimide...
Patent number
9,683,087
Issue date
Jun 20, 2017
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for producing porous polyimide film, porous polyimide film a...
Patent number
9,601,739
Issue date
Mar 21, 2017
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa Sugawara
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
POROUS FILM AND METHOD FOR PRODUCING SAME
Publication number
20200346169
Publication date
Nov 5, 2020
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING POROUS FILM, METHOD FOR PRODUCING COMPOSITION...
Publication number
20200199322
Publication date
Jun 25, 2020
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
PURIFICATION METHOD FOR PURIFYING LIQUID, PURIFICATION METHOD FOR P...
Publication number
20180311622
Publication date
Nov 1, 2018
Tokyo Ohka Kogyo Co., Ltd.
Yoshihiro SAWADA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
POROUS FILM AND METHOD FOR PRODUCING SAME
Publication number
20180250640
Publication date
Sep 6, 2018
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
METHOD FOR MANUFACTURING POROUS MEMBRANE
Publication number
20180244887
Publication date
Aug 30, 2018
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
METHOD FOR PURIFYING LIQUID, METHOD FOR PRODUCING CHEMICAL SOLUTION...
Publication number
20180028983
Publication date
Feb 1, 2018
Tokyo Ohka Kogyo Co., Ltd.
Hayato TAKASHIMA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
POLYIMIDE AND/OR POLYAMIDEIMIDE POROUS BODY AND METHOD FOR MANUFACT...
Publication number
20180021739
Publication date
Jan 25, 2018
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
VARNISH FOR POROUS POLYIMIDE FILM PRODUCTION AND METHOD FOR PRODUCI...
Publication number
20180009962
Publication date
Jan 11, 2018
Tokyo Ohka Kogyo Co., Ltd.
Mitsuharu TOBARI
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
METHOD FOR PRODUCING POROUS POLYIMIDE FILM
Publication number
20170256766
Publication date
Sep 7, 2017
Tokyo Ohka Kogyo Co., Ltd.
Mitsuharu TOBARI
B32 - LAYERED PRODUCTS
Information
Patent Application
METHOD FOR PRODUCING POROUS POLYIMIDE FILM, POROUS POLYIMIDE FILM A...
Publication number
20170187021
Publication date
Jun 29, 2017
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
FILTRATION FILTER, FILTRATION METHOD, PRODUCTION METHOD OF PURIFIED...
Publication number
20170090293
Publication date
Mar 30, 2017
Tokyo Ohka Kogyo Co., Ltd.
Akihiko NAKATA
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
POROUS SEPARATOR FOR SECONDARY BATTERIES AND SECONDARY BATTERY USIN...
Publication number
20170018749
Publication date
Jan 19, 2017
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
PRODUCTION METHOD FOR POROUS POLYIMIDE RESIN FILM, POROUS POLYIMIDE...
Publication number
20160185932
Publication date
Jun 30, 2016
Tokyo Ohka Kogyo Co., Ltd.
Tsukasa SUGAWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHOD FOR PRODUCING POROUS POLYIMIDE FILM, POROUS POLYIMIDE FILM A...
Publication number
20160072110
Publication date
Mar 10, 2016
Tokyo Ohka Kogyo Co.,Ltd.
Tsukasa SUGAWARA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Video Signal Switching System
Publication number
20090097496
Publication date
Apr 16, 2009
Kazunori Nakamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE