Kenichi Okada

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing a bellows with oval cross section and apparatu...
- Patent number 4,827,747
- Issue date May 9, 1989
- Hitachi, Ltd.
- Kenichi Okada
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
T-joint manufacturing apparatus
- Patent number 4,676,088
- Issue date Jun 30, 1987
- Hitachi, Ltd.
- Kenichi Okada
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Method and apparatus for increasing thickness of tubular member
- Patent number 4,625,533
- Issue date Dec 2, 1986
- Hitachi, Ltd.
- Kenichi Okada
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Method of producing a fluid pressure reducing device
- Patent number 4,506,423
- Issue date Mar 26, 1985
- Hitachi, Ltd.
- Keiichi Nakamura
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...