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Takehisa Yamamoto
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Toyama-shi, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Composite member, heat radiation member, semiconductor device, and...
Patent number
11,147,156
Issue date
Oct 12, 2021
Sumitomo Electric Industries, Ltd.
Isao Iwayama
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method of producing silicon nitride ceramic component
Patent number
5,599,493
Issue date
Feb 4, 1997
Sumitomo Electric Industries, Ltd.
Yasushi Ito
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Ceramic die for cutting and shaping lead frames and method of clean...
Patent number
5,582,215
Issue date
Dec 10, 1996
Sumitomo Electric Industries, Ltd.
Takehisa Yamamoto
B08 - CLEANING
Information
Patent Grant
Grind-machining method of ceramic materials
Patent number
5,564,966
Issue date
Oct 15, 1996
Sumitomo Electric Industries, Ltd.
Takao Nishioka
B24 - GRINDING POLISHING
Information
Patent Grant
Silicon nitride sintered body
Patent number
5,502,011
Issue date
Mar 26, 1996
Sumitomo Electric Industries, Ltd.
Takehisa Yamamoto
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered body
Patent number
5,424,256
Issue date
Jun 13, 1995
Sumitomo Electric Industries, Ltd.
Masashi Yoshimura
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered body and process for producing the same
Patent number
5,369,065
Issue date
Nov 29, 1994
Sumitomo Electric Industries, Ltd.
Masashi Yoshimura
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Adjusting shim
Patent number
5,358,797
Issue date
Oct 25, 1994
Sumitomo Electric Industries, Ltd.
Kenji Matsunuma
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Sintered silicon nitride bodies suitable for use as high impact mat...
Patent number
5,346,869
Issue date
Sep 13, 1994
Sumitomo Electric Industries, Ltd.
Takao Nishioka
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered body and process for producing the same
Patent number
5,275,772
Issue date
Jan 4, 1994
Sumitomo Electric Industries, Ltd.
Takehisa Yamamoto
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered body
Patent number
5,275,986
Issue date
Jan 4, 1994
Sumitomo Electric Industries, Ltd.
Takehisa Yamamoto
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered body and process for producing the same
Patent number
5,204,297
Issue date
Apr 20, 1993
Sumitomo Electric Industries, Ltd.
Takehisa Yamamoto
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Silicon nitride sintered body and process for producing the same
Patent number
5,173,458
Issue date
Dec 22, 1992
Sumitomo Electric Industries, Ltd.
Takao Nishioka
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Patents Applications
last 30 patents
Information
Patent Application
COMPOSITE MEMBER, HEAT RADIATION MEMBER, SEMICONDUCTOR DEVICE, AND...
Publication number
20190297725
Publication date
Sep 26, 2019
Sumitomo Electric Industries, Ltd.
Isao IWAYAMA
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information
Patent Application
AlN SINTERED COMPACT, AlN SUBSTRATE AND METHOD OF PRODUCING AlN SUB...
Publication number
20170152425
Publication date
Jun 1, 2017
Sumitomo Electric Industries, Ltd.
Hideaki Awata
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Application
ALN Substrate And Method For Producing Same
Publication number
20140124700
Publication date
May 8, 2014
Takehisa Yamamoto
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES