Riken Light Metal Industries Company, Ltd.

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Patents Grantslast 30 patents

Information Patent Grant
Aluminum alloy shapes
- Patent number 4,039,355
- Issue date Aug 2, 1977
- Riken Light Metal Industries Company, Ltd.
- Toshiro Takahashi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Method of forming oxide film on aluminum or aluminum alloy
- Patent number 3,997,412
- Issue date Dec 14, 1976
- Riken Light Metal Industries Company, Ltd.
- Masashi Ikegaya
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Process for producing a protective film on an aluminum surface
- Patent number 3,988,217
- Issue date Oct 26, 1976
- Riken Lightmetal Industry Co., Ltd.
- Masashi Ikegaya
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Method of forming colored oxide film on aluminum or aluminum alloy
- Patent number 3,930,966
- Issue date Jan 6, 1976
- Riken Light Metal Industries Company, Ltd.
- Toshiro Takahashi
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR