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Yoichiro KAGAWA
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Koshigaya-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Apparatus for producing microporous plastic film
Patent number
10,940,618
Issue date
Mar 9, 2021
Seiji Kagawa
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Grant
Apparatus for producing microporous plastic film
Patent number
10,744,665
Issue date
Aug 18, 2020
Seiji Kagawa
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Grant
Apparatus for producing microporous plastic film
Patent number
10,538,026
Issue date
Jan 21, 2020
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Apparatus for producing easy-to-tear plastic film
Patent number
10,538,027
Issue date
Jan 21, 2020
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method and apparatus for producing microporous metal foil
Patent number
10,283,284
Issue date
May 7, 2019
Seiji Kagawa
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Grant
Method and apparatus for producing microporous metal foil
Patent number
9,968,975
Issue date
May 15, 2018
Seiji Kagawa
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Method for producing porous metal foil
Patent number
9,889,479
Issue date
Feb 13, 2018
Seiji Kagawa
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Grant
Composite film of linearly-scratched, thin metal film and plastic f...
Patent number
9,616,640
Issue date
Apr 11, 2017
SEIJI KAGAWA
Seiji Kagawa
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Grant
Composite film of linearly-scratched, thin metal film and plastic f...
Patent number
9,238,351
Issue date
Jan 19, 2016
Seiji Kagawa
B32 - LAYERED PRODUCTS
Information
Patent Grant
Apparatus for forming slant, linear easy-to-tear portions on long p...
Patent number
9,096,013
Issue date
Aug 4, 2015
SEIJI KAGAWA
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Easy-to-straight-tearing thermoplastic resin film and its productio...
Patent number
7,938,998
Issue date
May 10, 2011
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Porous film manufacturing apparatus
Patent number
5,648,107
Issue date
Jul 15, 1997
Seiji Kagawa
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Porous film and porous film manufacturing apparatus
Patent number
5,451,257
Issue date
Sep 19, 1995
Kagawa; Seiji
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Porous film and porous film manufacturing apparatus
Patent number
5,352,108
Issue date
Oct 4, 1994
Sudo; Norito
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Patents Applications
last 30 patents
Information
Patent Application
ELECTROMAGNETIC-WAVE-ABSORBING FILM AND ITS PRODUCTION APPARATUS, A...
Publication number
20250056776
Publication date
Feb 13, 2025
Seiji KAGAWA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
APPARATUS FOR PRODUCING MICROPOROUS PLASTIC FILM
Publication number
20190248035
Publication date
Aug 15, 2019
Seiji KAGAWA
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Application
APPARATUS FOR PRODUCING EASY-TO-TEAR PLASTIC FILM
Publication number
20180215090
Publication date
Aug 2, 2018
Seiji KAGAWA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
APPARATUS FOR PRODUCING MICROPOROUS PLASTIC FILM
Publication number
20180178442
Publication date
Jun 28, 2018
Seiji KAGAWA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
APPARATUS FOR PRODUCING MICROPOROUS PLASTIC FILM
Publication number
20170368725
Publication date
Dec 28, 2017
Seiji KAGAWA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
METHOD AND APPARATUS FOR PRODUCING MICROPOROUS METAL FOIL
Publication number
20170103857
Publication date
Apr 13, 2017
Seiji KAGAWA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHOD AND APPARATUS FOR PRODUCING MICROPOROUS METAL FOIL
Publication number
20160107211
Publication date
Apr 21, 2016
Seiji KAGAWA
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
COMPOSITE FILM OF LINEARLY-SCRATCHED, THIN METAL FILM AND PLASTIC F...
Publication number
20150382518
Publication date
Dec 31, 2015
Seiji KAGAWA
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Application
METHOD FOR PRODUCING POROUS METAL FOIL
Publication number
20150114065
Publication date
Apr 30, 2015
Seiji KAGAWA
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information
Patent Application
APPARATUS FOR FORMING SLANT, LINEAR EASY-TO-TEAR PORTIONS ON LONG P...
Publication number
20130129852
Publication date
May 23, 2013
Seiji KAGAWA
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
COMPOSITE FILM OF LINEARLY-SCRATCHED, THIN METAL FILM AND PLASTIC F...
Publication number
20110008580
Publication date
Jan 13, 2011
Seiji Kagawa
B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information
Patent Application
EASY-TO-STRAIGHT-TEARING THERMOPLASTIC RESIN FILM AND ITS PRODUCTIO...
Publication number
20100007050
Publication date
Jan 14, 2010
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Linearly easy-to-rupture thermoplastic resin film, and method and d...
Publication number
20050233102
Publication date
Oct 20, 2005
Seiji Kagawa
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL