Hidetoshi Yoshikawa

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Nagoya, JP

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Patents Grantslast 30 patents

Information Patent Grant
Oil tempered wire for cold forming coil springs
- Patent number 7,407,555
- Issue date Aug 5, 2008
- Chuo Hatsujo Kabushiki Kaisha
- Hidetoshi Yoshikawa
- C21 - METALLURGY OF IRON

Patents Applicationslast 30 patents

Information Patent Application
SPRING AND METHOD FOR MANUFACTURING THE SPRING
- Publication number 20160208875
- Publication date Jul 21, 2016
- CHUO HATSUJO KABUSHIKI KAISHA
- Hidetoshi Yoshikawa
- C21 - METALLURGY OF IRON
Information Patent Application
Cold-formed spring having high fatigue strength and high corrosion...
- Publication number 20070267112
- Publication date Nov 22, 2007
- CHUO SPRING CO., LTD.
- Hidetoshi Yoshikawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Oil tempered wire for cold forming coil springs
- Publication number 20050161131
- Publication date Jul 28, 2005
- Chuo Hatsujo Kabushiki Kaisaha
- Hidetoshi Yoshikawa
- C21 - METALLURGY OF IRON
Information Patent Application
Cold-formed spring having high fatigue strength and high corrosion...
- Publication number 20040238074
- Publication date Dec 2, 2004
- CHUO SPRING CO., LTD.
- Hidetoshi Yoshikawa
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Oil tempered wire for cold forming coil springs
- Publication number 20040079067
- Publication date Apr 29, 2004
- Chuo Hatsujo Kabushiki Kaisha
- Hidetoshi Yoshikawa
- C21 - METALLURGY OF IRON