Akira Nishihara

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Process for treating plated steel sheet
- Patent number 4,959,277
- Issue date Sep 25, 1990
- Nihon Parkerizing Co., Ltd.
- Kenshi Saeki
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Metal surface hydrophilicizing process and composition
- Patent number 4,954,372
- Issue date Sep 4, 1990
- Nihon Parkerizing Co., Ltd.
- Ryohsuke Sako
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for hydrophilic treatment of aluminum using an amphoteric po...
- Patent number 4,783,224
- Issue date Nov 8, 1988
- Nihon Parkerizing Co., Ltd.
- Ryosuke Sako
- F28 - HEAT EXCHANGE IN GENERAL