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Koichiro Oka
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Higashiosaka, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Polarization optical article in which uneven coloring by polarizati...
Patent number
9,507,176
Issue date
Nov 29, 2016
Yamamoto Kogaku Co., Ltd.
Nobuyuki Kobuchi
G02 - OPTICS
Information
Patent Grant
Single-lens type polarizing glasses
Patent number
8,870,373
Issue date
Oct 28, 2014
Yamamoto Kogaku Co., Ltd.
Naoya Aoyama
G02 - OPTICS
Information
Patent Grant
Lens for safety glasses
Patent number
7,901,074
Issue date
Mar 8, 2011
Yamamoto Kogaku Co., Ltd.
Tamenobu Yamamoto
G02 - OPTICS
Information
Patent Grant
Eyeglasses
Patent number
7,891,806
Issue date
Feb 22, 2011
Yamamoto Kogaku Co., Ltd.
Mitsuhiro Shintani
G02 - OPTICS
Information
Patent Grant
Protective device for eyes
Patent number
7,891,025
Issue date
Feb 22, 2011
Yamamoto Kogaku Co., Ltd.
Hirokazu Kobayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Polarizing molded article and process for preparing the same
Patent number
7,318,960
Issue date
Jan 15, 2008
Yamamoto Kogaku Co., Ltd
Tamenobu Yamamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method for continuously manufacturing optical article
Patent number
6,814,902
Issue date
Nov 9, 2004
Yamamoto Kogaku Co. LTD
Tamenobu Yamamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Polarizing optical article
Patent number
6,659,608
Issue date
Dec 9, 2003
Yamamoto Kogaku Co., Ltd.
Tamenobu Yamamoto
G02 - OPTICS
Information
Patent Grant
Polarizing optical composite and polarizing lens
Patent number
6,613,433
Issue date
Sep 2, 2003
Yamamoto Kogaku Co., Ltd.
Tamenobu Yamamoto
G02 - OPTICS
Information
Patent Grant
Transparent optical article
Patent number
6,455,163
Issue date
Sep 24, 2002
Yamamoto Kogaku Co., Ltd.
Masahiko Okamoto
B32 - LAYERED PRODUCTS
Information
Patent Grant
Method of producing sulfur containing color-free transparent (metha...
Patent number
5,767,212
Issue date
Jun 16, 1998
Toray Industries, Inc.
Yuichiro Iguchi
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Thiol Methacrylate or acrylate resin and a method of making same
Patent number
5,612,390
Issue date
Mar 18, 1997
Toray Industries, Inc.
Yuichiro Iguchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Method of making thiol methacrylate or acrylate and a lens made the...
Patent number
5,502,141
Issue date
Mar 26, 1996
Toray Industries, Inc.
Yuichiro Iguchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Thiol methacrylate or acrylate, method of making same and a lens ma...
Patent number
5,399,735
Issue date
Mar 21, 1995
Toray Industries, Inc.
Yuichiro Iguchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Thiol methacrylate or acrylate resin
Patent number
5,294,690
Issue date
Mar 15, 1994
Toray Industries, Inc.
Yuichiro Iguchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Thiol methacrylate or acrylate resin obtained by polymerizing a thi...
Patent number
5,247,041
Issue date
Sep 21, 1993
Toray Industries, Inc.
Yuichiro Iguchi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Liquid crystal electro-optical element and process for preparation...
Patent number
4,989,955
Issue date
Feb 5, 1991
Toray Industries, Inc.
Kokichi Ito
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Pressure-sensitive tablet
Patent number
4,963,417
Issue date
Oct 16, 1990
Toray Industries, Inc.
Takashi Taniguchi
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Powdery adhesive and process for preparation thereof
Patent number
4,959,398
Issue date
Sep 25, 1990
Toray Industries, Inc.
Koichiro Oka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Modified fine particles and a process for their production
Patent number
4,752,528
Issue date
Jun 21, 1988
Toray Industries, Inc.
Koichiro Oka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Epoxy type spherical particulate adhesive and process for preparati...
Patent number
4,732,961
Issue date
Mar 22, 1988
Toray Industries, Inc.
Koichiro Oka
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Process for producing cured epoxy resin spherical particles
Patent number
4,588,617
Issue date
May 13, 1986
Toray Industries, Inc.
Koichiro Oka
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Patents Applications
last 30 patents
Information
Patent Application
POLARIZATION OPTICAL ARTICLE IN WHICH UNEVEN COLORING BY POLARIZATI...
Publication number
20120250142
Publication date
Oct 4, 2012
Nobuyuki KOBUCHI
G02 - OPTICS
Information
Patent Application
SINGLE-LENS TYPE POLARIZING GLASSES
Publication number
20110211154
Publication date
Sep 1, 2011
YAMAMOTO KOGAKU CO., LTD.
Naoya AOYAMA
G02 - OPTICS
Information
Patent Application
CIRCULARLY POLARIZING PLATE AND CIRCULARLY POLARIZING LENS, AND CIR...
Publication number
20110205627
Publication date
Aug 25, 2011
YAMAMOTO KOGAKU CO., LTD.
Nobuyuki KOBUCHI
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Eyeglasses
Publication number
20100060847
Publication date
Mar 11, 2010
YAMAMOTO KOGAKU CO., LTD.
Mitsuhiro Shintani
G02 - OPTICS
Information
Patent Application
POLARIZING LAMINATE AND PROCESS FOR PRODUCING THE SAME
Publication number
20090305049
Publication date
Dec 10, 2009
YAMAMOTO KOGAKU CO., LTD.
Nobuyuki KOBUCHI
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Protective device for eyes
Publication number
20080055538
Publication date
Mar 6, 2008
YAMAMOTO KOGAKU CO., LTD.
Hirokazu Kobayashi
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
Lens for Safety Glasses
Publication number
20070285615
Publication date
Dec 13, 2007
YAMAMOTO KOGAKU CO., LTD.
Tamenobu Yamamoto
G02 - OPTICS
Information
Patent Application
TRANSPARENT OPTICAL ARTICLE
Publication number
20020136897
Publication date
Sep 26, 2002
Masahiko Okamoto
B32 - LAYERED PRODUCTS
Information
Patent Application
Polarizing optical article
Publication number
20020135735
Publication date
Sep 26, 2002
Tamenobu Yamamoto
B32 - LAYERED PRODUCTS
Information
Patent Application
Polarizing molded article and process for preparing the same
Publication number
20020084023
Publication date
Jul 4, 2002
Tamenobu Yamamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Application
Polarizing optical composite and polarizing lens
Publication number
20020044352
Publication date
Apr 18, 2002
YAMAMOTO KOGAKU CO., LTD.
Tamenobu Yamamoto
G02 - OPTICS
Information
Patent Application
Method for continuously manufacturing optical article
Publication number
20020036359
Publication date
Mar 28, 2002
YAMAMOTO KOGAKU CO., LTD.
Tamenobu Yamamoto
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL