Naoyuki Akimoto

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing piston ring with recess
- Patent number 11,047,479
- Issue date Jun 29, 2021
- Nippon Piston Ring Co., Ltd.
- Kazuhiro Fujimura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Method for producing piston ring with recess
- Patent number 10,514,097
- Issue date Dec 24, 2019
- Nippon Piston Ring Co., Ltd.
- Kazuhiro Fujimura
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Piston ring
- Patent number 9,464,717
- Issue date Oct 11, 2016
- NIPPON PISTON RING CO., LTD.
- Michihiro Ito
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR PRODUCING PISTON RING WITH RECESS
- Publication number 20200080638
- Publication date Mar 12, 2020
- Nippon Piston Ring Co., Ltd.
- Kazuhiro FUJIMURA
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
METHOD FOR PRODUCING PISTON RING WITH RECESS
- Publication number 20170335965
- Publication date Nov 23, 2017
- Nippon Piston Ring Co., Ltd.
- Kazuhiro Fujimura
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Application
PISTON RING
- Publication number 20130043659
- Publication date Feb 21, 2013
- Nippon Piston Ring Co., Ltd.
- Michihiro Ito
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
PISTON RING
- Publication number 20120205876
- Publication date Aug 16, 2012
- NIPPON PISTON RING CO., LTD.
- Kazuhiro Fujimura
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...