Keisuke Takuma

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Heat-sensitive color-developing composition and heat-sensitive reco...
- Patent number 8,888,906
- Issue date Nov 18, 2014
- Yamamoto Chemicals, Inc.
- Ryoji Yamaguchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Sulfur compound and use thereof
- Patent number 6,570,025
- Issue date May 27, 2003
- Mitsui Chemicals, Inc.
- Kenichi Fujii
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dyed molded article
- Patent number 6,482,916
- Issue date Nov 19, 2002
- Mitsui Chemicals, Inc.
- Keisuke Takuma
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Sulfur-containing unsaturated carboxylate compound and its cured pr...
- Patent number 6,458,908
- Issue date Oct 1, 2002
- Mitsui Chemicals, Inc.
- Masao Imai
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Optical recording medium and dipyrromethene metal chelate compound...
- Patent number 6,355,327
- Issue date Mar 12, 2002
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Sulfur-containing (thio)ether (co)polymer and a use thereof
- Patent number 6,320,020
- Issue date Nov 20, 2001
- Mitsui Chemicals, Inc.
- Keisuke Takuma
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Epoxy-resin composition and use thereof
- Patent number 6,310,147
- Issue date Oct 30, 2001
- Mitsui Chemicals, Inc.
- Tatsuhiro Urakami
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Epoxy-resin composition and use thereof
- Patent number 6,297,332
- Issue date Oct 2, 2001
- Mitsui Chemicals, Inc.
- Tatsuhiro Urakami
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical recording medium and dipyrromethene metal chelate compound...
- Patent number 6,162,520
- Issue date Dec 19, 2000
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Process for preparing an organic compound from an oxirane-containin...
- Patent number 6,130,346
- Issue date Oct 10, 2000
- Mitsui Chemicals, Inc.
- Tadahito Nobori
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photosensitizer, visible light curable resin composition using the...
- Patent number 6,106,999
- Issue date Aug 22, 2000
- Mitsui Chemicals
- Akira Ogiso
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Low-birefringent organic optical component and a spirobiindan polymer
- Patent number 6,080,833
- Issue date Jun 27, 2000
- Mitsui Chemicals, Inc.
- Atsuo Otsuji
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Dipyrromethene metal chelate compounds
- Patent number 6,060,606
- Issue date May 9, 2000
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polycarbonate copolymer and applications thereof
- Patent number 6,028,161
- Issue date Feb 22, 2000
- Mitsui Chemicals, Inc.
- Atsuo Otsuji
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Organic optical component
- Patent number 5,990,261
- Issue date Nov 23, 1999
- Mitsui Chemicals, Inc.
- Wataru Yamashita
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for controlling plant growth
- Patent number 5,953,857
- Issue date Sep 21, 1999
- Mitsui Chemicals, Inc.
- Ichiro Aiga
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Optical recording medium
- Patent number 5,948,593
- Issue date Sep 7, 1999
- Mitsui Chemicals, Inc.
- Tsutami Misawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polymaleimide resin composition and laminate plate for semiconducto...
- Patent number 5,945,503
- Issue date Aug 31, 1999
- Mitsui Chemicals, Inc.
- Keisuke Takuma
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
Polyimide resin compositions for optical filters
- Patent number 5,916,488
- Issue date Jun 29, 1999
- Mitsui Chemicals, Inc.
- Keisuke Takuma
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Polyimide resin compositions for optical filters
- Patent number 5,868,968
- Issue date Feb 9, 1999
- Mitsui Chemicals, Inc.
- Keisuke Takuma
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Plasma display filter
- Patent number 5,804,102
- Issue date Sep 8, 1998
- Mitsui Chemicals, Inc.
- Ryu Oi
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Near infrared ray absorbing compound having high durability and its...
- Patent number 5,788,914
- Issue date Aug 4, 1998
- Mitsui Chemicals, Inc.
- Ryu Oi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Near infrared absorber, preparation process therefor and use thereof
- Patent number 5,705,101
- Issue date Jan 6, 1998
- Mitsui Toatsu Chemicals, Inc.
- Ryu Oi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Azo compounds and polarizing films using the compounds
- Patent number 5,698,682
- Issue date Dec 16, 1997
- Mitsui Toatsu Chemicals, Inc.
- Yoriaki Matsuzaki
- G02 - OPTICS
Information Patent Grant
Phthalocyanine compounds and optical recording media comprising them
- Patent number 5,693,396
- Issue date Dec 2, 1997
- Mitsui Toatsu Chemicals, Inc.
- Tsutami Misawa
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Epoxy acrylate resins and their uses
- Patent number 5,677,398
- Issue date Oct 14, 1997
- Mitsui Toatsu Chemicals, Inc.
- Toshihiro Motoshima
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Optical recording medium
- Patent number 5,672,462
- Issue date Sep 30, 1997
- Mitsui Toatsu Chemicals, Inc.
- Keisuke Takuma
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Optical recording media
- Patent number 5,658,707
- Issue date Aug 19, 1997
- Mitsui Toatsu Chemicals, Inc.
- Keisuke Takuma
- G11 - INFORMATION STORAGE
Information Patent Grant
Azo compounds and polarizing films using the compounds
- Patent number 5,639,809
- Issue date Jun 17, 1997
- Mitsui Toatsu Chemicals, Inc.
- Yoriaki Matsuzaki
- G02 - OPTICS
Information Patent Grant
Dyeing method
- Patent number 5,630,849
- Issue date May 20, 1997
- Mitsui Toatsu Chemicals, Inc.
- Taiji Kameoka
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...

Patents Applicationslast 30 patents

Information Patent Application
HEAT-SENSITIVE COLOR-DEVELOPING COMPOSITION AND HEAT-SENSITIVE RECO...
- Publication number 20130180430
- Publication date Jul 18, 2013
- YAMAMOTO CHEMICALS, INC.
- Ryoji Yamaguchi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Dental material and composition
- Publication number 20040039080
- Publication date Feb 26, 2004
- Narimichi Honda
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Optical materials and optical part each containing aromatic sulfide...
- Publication number 20030085387
- Publication date May 8, 2003
- Takahiro Fujiyama
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Keisuke Takuma

Person

Patents Grantslast 30 patents

Heat-sensitive color-developing composition and heat-sensitive reco...

Sulfur compound and use thereof

Dyed molded article

Sulfur-containing unsaturated carboxylate compound and its cured pr...

Optical recording medium and dipyrromethene metal chelate compound...

Sulfur-containing (thio)ether (co)polymer and a use thereof

Epoxy-resin composition and use thereof

Epoxy-resin composition and use thereof

Optical recording medium and dipyrromethene metal chelate compound...

Process for preparing an organic compound from an oxirane-containin...

Photosensitizer, visible light curable resin composition using the...

Low-birefringent organic optical component and a spirobiindan polymer

Dipyrromethene metal chelate compounds

Polycarbonate copolymer and applications thereof

Organic optical component

Method for controlling plant growth

Optical recording medium

Polymaleimide resin composition and laminate plate for semiconducto...

Polyimide resin compositions for optical filters

Polyimide resin compositions for optical filters

Plasma display filter

Near infrared ray absorbing compound having high durability and its...

Near infrared absorber, preparation process therefor and use thereof

Azo compounds and polarizing films using the compounds

Phthalocyanine compounds and optical recording media comprising them

Epoxy acrylate resins and their uses

Optical recording medium

Optical recording media

Azo compounds and polarizing films using the compounds

Dyeing method

Patents Applicationslast 30 patents

HEAT-SENSITIVE COLOR-DEVELOPING COMPOSITION AND HEAT-SENSITIVE RECO...

Dental material and composition

Optical materials and optical part each containing aromatic sulfide...