Koji Takeuchi

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Piston ring and combination of compression rings
- Patent number 6,213,474
- Issue date Apr 10, 2001
- Nippon Piston Ring Co., Ltd.
- Shuji Sameshima
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Method of manufacturing a radially corrugated expander-spacer for a...
- Patent number 4,606,101
- Issue date Aug 19, 1986
- Nippon Piston Ring Co., Ltd.
- Takeo Koroki
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...