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Takamasa Kawakubo deceased
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late of Tano-gun, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Cathode formed of graphite/carbon composite for lithium ion seconda...
Patent number
6,139,989
Issue date
Oct 31, 2000
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Carbon material for electrodes and process for preparing it
Patent number
5,391,433
Issue date
Feb 21, 1995
Mitsubishi Pencil Kabushiki Kaisha
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Micro-electrode and method for preparing it
Patent number
5,380,422
Issue date
Jan 10, 1995
Agency of Industrial Science and Technology
Akira Negishi
G01 - MEASURING TESTING
Information
Patent Grant
Carbon micro-sensor electrode and method for preparing it
Patent number
5,376,251
Issue date
Dec 27, 1994
Agency of Industrial Science and Technology
Hiroko Kaneko
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Carbon micro-sensor electrode and method for preparing it
Patent number
5,281,319
Issue date
Jan 25, 1994
Agency of Industrial Science and Technology
Hiroko Kaneko
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Tapered carbon microelectrode and process for production thereof
Patent number
5,218,757
Issue date
Jun 15, 1993
Agency of Industrial Science and Technology
Hiroko Kaneko
G01 - MEASURING TESTING
Information
Patent Grant
Process for producing carbonaceous implant material
Patent number
5,171,492
Issue date
Dec 15, 1992
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Grant
Process for preparation of carbon fiber composite reinforced carbon...
Patent number
5,096,519
Issue date
Mar 17, 1992
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for producing carbon product with coarse and dense structure
Patent number
4,950,443
Issue date
Aug 21, 1990
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Coiled resistance heating element of carbonaceous material
Patent number
4,916,292
Issue date
Apr 10, 1990
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Process for producing porous materials of carbon
Patent number
4,894,215
Issue date
Jan 16, 1990
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for producing carbon product having coarse and dense structure
Patent number
4,882,103
Issue date
Nov 21, 1989
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for producing hard carbonaceous sheets
Patent number
4,882,102
Issue date
Nov 21, 1989
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for producing carbon heat generator
Patent number
4,863,649
Issue date
Sep 5, 1989
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Carbon spring and process for preparing the same
Patent number
4,412,675
Issue date
Nov 1, 1983
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Method of fabricating an eraser
Patent number
4,374,225
Issue date
Feb 15, 1983
Mitsubishi Pencil Co., Ltd.
Takamasa Kawakubo
B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES