Yoshimasa Tuji

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Fuji, JP

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Patents Grantslast 30 patents

Information Patent Grant
Mask element for selective sandblasting and a method
- Patent number 4,587,186
- Issue date May 6, 1986
- Asahi Kasei Kogyo Kabushiki Kaisha
- Shohei Nakamura
- B24 - GRINDING POLISHING
Information Patent Grant
Process for preparing a mask for sandblasting
- Patent number 4,456,680
- Issue date Jun 26, 1984
- Asahi Kasei Kogyo Kabushiki Kaisha
- Shohei Nakamura
- B24 - GRINDING POLISHING