Ayato OIKAWA

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Tochigi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Iron-based sintered alloy valve seat for internal combustion engine
- Patent number 11,549,408
- Issue date Jan 10, 2023
- Nippon Piston Ring Co., Ltd.
- Ayato Oikawa
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Valve seat insert excellent in wear resistance made of iron-base si...
- Patent number 10,605,374
- Issue date Mar 31, 2020
- Nippon Piston Ring Co., Ltd.
- Seisuke Takaki
- B22 - CASTING POWDER METALLURGY

Patents Applicationslast 30 patents

Information Patent Application
IRON-BASED SINTERED ALLOY VALVE SEAT FOR INTERNAL COMBUSTION ENGINE
- Publication number 20210215071
- Publication date Jul 15, 2021
- NIPPON PISTON RING CO., LTD
- Ayato OIKAWA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
SINTERED FERROUS ALLOY VALVE SEAT EXHIBITING EXCELLENT THERMAL COND...
- Publication number 20200284173
- Publication date Sep 10, 2020
- Nippon Piston Ring Co., Ltd.
- Ayato OIKAWA
- B22 - CASTING POWDER METALLURGY
Information Patent Application
VALVE SEAT INSERT EXCELLENT IN WEAR RESISTANCE MADE OF IRON-BASE SI...
- Publication number 20180149280
- Publication date May 31, 2018
- NIPPON PISTON RING CO., LTD.
- Seisuke TAKAKI
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...