Masao Hayashi

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Patents Grantslast 30 patents

Information Patent Grant
Press molding oil and method of manufacturing press-molded products...
- Patent number 5,747,432
- Issue date May 5, 1998
- Matsushita Electronics Corporation
- Masao Hayashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Press-molding oil and method of manufacturing press-molded products...
- Patent number 5,727,410
- Issue date Mar 17, 1998
- Matsushita Electronics Corporation
- Masao Hayashi
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...