Masahide Hama

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Wire for piston ring, and manufacturing method of piston ring
- Patent number 11,603,929
- Issue date Mar 14, 2023
- TPR CO., LTD.
- Atsushi Nakazawa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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...
Information Patent Grant
Combination oil ring
- Patent number 9,458,933
- Issue date Oct 4, 2016
- TPR CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
WIRE FOR PISTON RING, AND MANUFACTURING METHOD OF PISTON RING
- Publication number 20220145990
- Publication date May 12, 2022
- TPR CO., LTD.
- Atsushi Nakazawa
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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...
Information Patent Application
COMBINATION OIL RING
- Publication number 20110221141
- Publication date Sep 15, 2011
- TEIKOKU PISTON RING CO., LTD.
- Noriaki Ayuzawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...