Yoichi Oba

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Higashiyamato, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electromagnetic wave shielding composition comprising epoxy resin a...
- Patent number 5,066,692
- Issue date Nov 19, 1991
- Asahi Chemical Research Laboratory Co., Ltd.
- Yamahiro Isawa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electromagnetic wave shielding circuit and production method thereof
- Patent number 4,970,354
- Issue date Nov 13, 1990
- Asahi Chemical Research Laboratory Co., Ltd.
- Yamahiro Iwasa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for producing electrically conductive circuits on a base board
- Patent number 4,837,050
- Issue date Jun 6, 1989
- Asahi Chemical Research Laboratory Co., Ltd.
- Yamahiro Iwasa
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Automatic soldering apparatus and method of using the flux to heat...
- Patent number 4,684,054
- Issue date Aug 4, 1987
- Asahi Chemical Research Laboratory Co., Ltd.
- Yamahiro Iwasa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR