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Chiba, JP
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last 30 patents
Information
Patent Grant
Composition for optical material and optical material
Patent number
11,999,824
Issue date
Jun 4, 2024
Mitsubishi Gas Chemical Company, Inc.
Yousuke Imagawa
G02 - OPTICS
Information
Patent Grant
Allyl compound and composition for optical material
Patent number
11,945,791
Issue date
Apr 2, 2024
Mitsubishi Gas Chemical Company, Inc.
Kouhei Takemura
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Production method for 1,2,3,5,6-pentathiepane
Patent number
11,919,877
Issue date
Mar 5, 2024
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki Tanagi
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Episulfide compound and composition for optical material
Patent number
11,858,920
Issue date
Jan 2, 2024
Mitsubishi Gas Chemical Company, Inc.
Kouhei Takemura
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optical resin material for chromatic aberration correction
Patent number
11,634,558
Issue date
Apr 25, 2023
Mitsubishi Gas Chemical Company, Inc.
Kosuke Namiki
G02 - OPTICS
Information
Patent Grant
Method for producing polyfunctional sulfur-containing epoxy compound
Patent number
11,377,433
Issue date
Jul 5, 2022
Mitsubishi Gas Chemical Company, Inc.
Yousuke Imagawa
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Composition for high refractive index low dispersion resins for com...
Patent number
11,214,650
Issue date
Jan 4, 2022
Mitsubishi Gas Chemical Company, Inc.
Kousuke Namiki
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Optical material composition
Patent number
11,078,363
Issue date
Aug 3, 2021
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko Nishimori
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optical material composition
Patent number
10,982,094
Issue date
Apr 20, 2021
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko Nishimori
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Optical material composition and optical material
Patent number
10,767,015
Issue date
Sep 8, 2020
Mitsubishi Gas Chemical Company, Inc.
Kota Kinjo
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Photocurable composition and optical material
Patent number
10,647,819
Issue date
May 12, 2020
Mitsubishi Gas Chemical Company, Inc.
Kousuke Namiki
G02 - OPTICS
Information
Patent Grant
Method for producing cured product of episulfide-based resin
Patent number
10,526,452
Issue date
Jan 7, 2020
Mitsubishi Gas Chemical Company, Inc.
Kousuke Namiki
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Composition for optical material and optical material using the same
Patent number
10,508,173
Issue date
Dec 17, 2019
Mitsubishi Gas Chemical Company, Inc.
Yousuke Imagawa
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing 1,2,3,5,6-pentathiepane
Patent number
10,472,343
Issue date
Nov 12, 2019
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki Tanagi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Sulfur compound and composition for optical materials containing same
Patent number
10,131,749
Issue date
Nov 20, 2018
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko Nishimori
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Polythiol compound and method for producing same
Patent number
10,071,959
Issue date
Sep 11, 2018
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko Nishimori
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Episulfide compound and optical material composition containing same
Patent number
10,065,940
Issue date
Sep 4, 2018
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko Nishimori
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Composition for optical materials
Patent number
10,025,005
Issue date
Jul 17, 2018
Mitsubishi Gas Chemical Company, Inc.
Hiroaki Tanaka
G02 - OPTICS
Information
Patent Grant
(Meth)acrylic acid ester compound and production method therefor
Patent number
10,005,714
Issue date
Jun 26, 2018
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki Tanagi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Method for producing novel ali cyclic ester compound, novel alicycl...
Patent number
9,994,513
Issue date
Jun 12, 2018
MITSUBISHI GAS CHEMICAL, INC.
Shoichi Hayakawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
(Meth)acrylate compound, (meth)acrylic copolymer and photosensitive...
Patent number
9,951,163
Issue date
Apr 24, 2018
Mitsubishi Gas Chemical Company, Inc.
Hiroyasu Tanaka
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Composition for optical material and method for producing same, and...
Patent number
9,914,799
Issue date
Mar 13, 2018
Mitsubishi Gas Chemical Company, Inc.
Kouhei Takemura
G02 - OPTICS
Information
Patent Grant
Optical material composition and method for producing same
Patent number
9,658,365
Issue date
May 23, 2017
Mitsubishi Gas Chemical Company, Inc.
Akinobu Horita
G02 - OPTICS
Information
Patent Grant
Thiol compound and composition for optical materials using the same
Patent number
9,604,959
Issue date
Mar 28, 2017
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko Nishimori
G02 - OPTICS
Information
Patent Grant
Composition for optical material, and method for producing same
Patent number
9,447,226
Issue date
Sep 20, 2016
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki Okada
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing optical material
Patent number
9,322,957
Issue date
Apr 26, 2016
Mitsubishi Gas Chemical Company, Inc.
Kouhei Takemura
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Episulfide compound and optical material composition
Patent number
9,273,185
Issue date
Mar 1, 2016
Mitsubishi Gas Chemical Company, Inc.
Kazuki Kariyazono
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Composition for optical materials, process for production thereof,...
Patent number
9,260,566
Issue date
Feb 16, 2016
MITSUBISHI GAS CHEMICAL, INC.
Kouhei Takemura
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method for producing sulfur-containing epoxy compound
Patent number
9,242,947
Issue date
Jan 26, 2016
Mitsubishi Gas Chemical Company, Inc.
Takashi Aoki
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optical material production process, optical material and optical lens
Patent number
9,182,520
Issue date
Nov 10, 2015
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki Okada
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIAL
Publication number
20230100848
Publication date
Mar 30, 2023
Mitsubishi Gas Chemical Company, Inc.
Mariko SADO
G02 - OPTICS
Information
Patent Application
EPISULFIDE COMPOUND AND COMPOSITION FOR OPTICAL MATERIAL
Publication number
20210340129
Publication date
Nov 4, 2021
Mitsubishi Gas Chemical Company, Inc.
Kouhei TAKEMURA
G02 - OPTICS
Information
Patent Application
NOVEL ALLYL COMPOUND AND COMPOSITION FOR OPTICAL MATERIAL
Publication number
20210292297
Publication date
Sep 23, 2021
Mitsubishi Gas Chemical Company, Inc.
Kouhei TAKEMURA
G02 - OPTICS
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIAL AND OPTICAL MATERIAL
Publication number
20210253798
Publication date
Aug 19, 2021
Mitsubishi Gas Chemical Company, Inc.
Yousuke IMAGAWA
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING POLYFUNCTIONAL SULFUR-CONTAINING EPOXY COMPOUND
Publication number
20210024478
Publication date
Jan 28, 2021
Mitsubishi Gas Chemical Company, Inc.
Yousuke IMAGAWA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PRODUCTION METHOD FOR 1,2,3,5,6-PENTATHIEPANE
Publication number
20210009553
Publication date
Jan 14, 2021
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki TANAGI
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
OPTICAL RESIN MATERIAL FOR CHROMATIC ABERRATION CORRECTION
Publication number
20200270421
Publication date
Aug 27, 2020
Mitsubishi Gas Chemical Company, Inc.
Kosuke NAMIKI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
OPTICAL MATERIAL COMPOSITION
Publication number
20200216616
Publication date
Jul 9, 2020
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
C07 - ORGANIC CHEMISTRY
Information
Patent Application
OPTICAL MATERIAL COMPOSITION
Publication number
20200024450
Publication date
Jan 23, 2020
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
COMPOSITION FOR HIGH REFRACTIVE INDEX LOW DISPERSION RESINS FOR COM...
Publication number
20190127530
Publication date
May 2, 2019
Mitsubishi Gas Chemical Company, Inc.
Kousuke NAMIKI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING 1,2,3,5,6-PENTATHIEPANE
Publication number
20190040035
Publication date
Feb 7, 2019
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki TANAGI
C07 - ORGANIC CHEMISTRY
Information
Patent Application
NOVEL SULFUR COMPOUND AND COMPOSITION FOR OPTICAL MATERIALS CONTAIN...
Publication number
20180265637
Publication date
Sep 20, 2018
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
C07 - ORGANIC CHEMISTRY
Information
Patent Application
PHOTOCURABLE COMPOSITION AND OPTICAL MATERIAL
Publication number
20180265638
Publication date
Sep 20, 2018
Mitsubishi Gas Chemical Company, Inc.
Kousuke NAMIKI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
CURABLE COMPOSITION AND ADHESIVE FOR OPTICAL APPLICATIONS USING SAME
Publication number
20180171080
Publication date
Jun 21, 2018
Mitsubishi Gas Chemical Company, Inc.
Kousuke NAMIKI
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
OPTICAL MATERIAL COMPOSITION AND OPTICAL MATERIAL
Publication number
20180127550
Publication date
May 10, 2018
Mitsubishi Gas Chemical Company, Inc.
Kota KINJO
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIAL AND OPTICAL MATERIAL USING THE SAME
Publication number
20180127549
Publication date
May 10, 2018
Mitsubishi Gas Chemical Company, Inc.
Yousuke IMAGAWA
G02 - OPTICS
Information
Patent Application
NOVEL EPISULFIDE COMPOUND AND OPTICAL MATERIAL COMPOSITION CONTAINI...
Publication number
20170247351
Publication date
Aug 31, 2017
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
G02 - OPTICS
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIAL AND METHOD FOR PRODUCING SAME, AND...
Publication number
20170051095
Publication date
Feb 23, 2017
Mitsubishi Gas Chemical Company, Inc.
Kouhei TAKEMURA
G02 - OPTICS
Information
Patent Application
METHOD FOR PRODUCING CURED PRODUCT OF EPISULFIDE-BASED RESIN
Publication number
20170044323
Publication date
Feb 16, 2017
Mitsubishi Gas Chemical Company, Inc.
Kousuke NAMIKI
G02 - OPTICS
Information
Patent Application
(METH)ACRYLIC ACID ESTER COMPOUND AND PRODUCTION METHOD THEREFOR
Publication number
20170008830
Publication date
Jan 12, 2017
Hiroyuki TANAGI
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
METHOD FOR PRODUCING NOVEL ALI CYCLIC ESTER COMPOUND, NOVEL ALICYCL...
Publication number
20160355461
Publication date
Dec 8, 2016
Shoichi HAYAKAWA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
(METH)ACRYLATE COMPOUND, (METH)ACRYLIC COPOLYMER AND PHOTOSENSITIVE...
Publication number
20160347896
Publication date
Dec 1, 2016
Hiroyasu TANAKA
C07 - ORGANIC CHEMISTRY
Information
Patent Application
OPTICAL MATERIAL COMPOSITION AND METHOD FOR PRODUCING SAME
Publication number
20160259091
Publication date
Sep 8, 2016
Mitsubishi Gas Chemical Company, Inc.
Akinobu HORITA
G02 - OPTICS
Information
Patent Application
POLYTHIOL COMPOUND AND METHOD FOR PRODUCING SAME
Publication number
20160229798
Publication date
Aug 11, 2016
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
G02 - OPTICS
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIAL
Publication number
20160122461
Publication date
May 5, 2016
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
G02 - OPTICS
Information
Patent Application
NOVEL THIOL COMPOUND AND COMPOSITION FOR OPTICAL MATERIALS USING TH...
Publication number
20160060244
Publication date
Mar 3, 2016
Mitsubishi Gas Chemical Company, Inc.
Yoshihiko NISHIMORI
G02 - OPTICS
Information
Patent Application
NOVEL EPISULFIDE COMPOUND AND OPTICAL MATERIAL COMPOSITION
Publication number
20150259477
Publication date
Sep 17, 2015
Mitsubishi Gas Chemical Company, Inc.
Kazuki Kariyazono
C07 - ORGANIC CHEMISTRY
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIALS, PROCESS FOR PRODUCTION THEREOF,...
Publication number
20150203633
Publication date
Jul 23, 2015
Mitsubishi Gas Chemical Company, Inc.
Kouhei Takemura
G02 - OPTICS
Information
Patent Application
COMPOSITION FOR OPTICAL MATERIAL, AND METHOD FOR PRODUCING SAME
Publication number
20150166720
Publication date
Jun 18, 2015
Mitsubishi Gas Chemical Company, Inc.
Hiroyuki Okada
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
METHOD FOR PRODUCING BIS(B-EPOXYPROPYL)SULFIDE AND BIS(B-EPOXYPROPY...
Publication number
20150158836
Publication date
Jun 11, 2015
Mitsubishi Gas Chemical Company, Inc.
Hiroshi Horikoshi
C07 - ORGANIC CHEMISTRY