Toshiyuki Shibuya

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Combination oil ring
- Patent number 10,072,755
- Issue date Sep 11, 2018
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Combination oil ring
- Patent number 9,845,873
- Issue date Dec 19, 2017
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Combination oil ring
- Patent number 9,726,286
- Issue date Aug 8, 2017
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
COMBINATION OIL RING
- Publication number 20170002926
- Publication date Jan 5, 2017
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
COMBINATION OIL RING
- Publication number 20170002925
- Publication date Jan 5, 2017
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
COMBINATION OIL RING
- Publication number 20140246834
- Publication date Sep 4, 2014
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...