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Patents Grants
last 30 patents
Information
Patent Grant
Sintered silicon carbide articles
Patent number
4,994,417
Issue date
Feb 19, 1991
Sumitomo Aluminum Smelting Company, Limited
Koichi Yamada
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Process for the production of low density activated alumina formed...
Patent number
4,444,899
Issue date
Apr 24, 1984
Sumitomo Aluminum Smelting Company, Limited
Koichi Yamada
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for the removal of organic substances from alkali metal alum...
Patent number
4,215,094
Issue date
Jul 29, 1980
Sumitomo Aluminum Smelting Company, Ltd.
Jun-ichi Inao
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Continuous casting and cladding process and apparatus for producing...
Patent number
4,213,558
Issue date
Jul 22, 1980
Sumitomo Aluminum Smelting Company, Ltd.
Koei Hirobe
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Continuous casting process and apparatus for production of metallic...
Patent number
4,205,716
Issue date
Jun 3, 1980
Sumitomo Aluminum Smelting Company, Ltd.
Kou Nakahira
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Electrodes for aluminum reduction cells
Patent number
4,173,518
Issue date
Nov 6, 1979
Sumitomo Aluminum Smelting Company, Limited
Koichi Yamada
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information
Patent Grant
Squirrel-cage rotor
Patent number
4,121,926
Issue date
Oct 24, 1978
Sumitomo Aluminum Smelting Company, Limited
Kazuhiko Ogawa
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method of producing aluminum fluoride
Patent number
4,041,137
Issue date
Aug 9, 1977
Sumitomo Aluminum Smelting Company, Ltd.
Tatsuo Abe
C01 - INORGANIC CHEMISTRY
Patents Applications
last 30 patents
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