Katsunao Chikahata

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Nagareyama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Valve guide for internal combustion engine made from iron base sint...
- Patent number 7,040,601
- Issue date May 9, 2006
- Hitachi Powdered Metals Co., Ltd.
- Katsunao Chikahata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Material for valve guides
- Patent number 6,616,726
- Issue date Sep 9, 2003
- Hitachi Powdered Metals Co., Ltd.
- Katsunao Chikahata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Valve guide and process for manufacturing thereof
- Patent number 6,012,703
- Issue date Jan 11, 2000
- Hitachi Powdered Metals Co., Ltd.
- Koichiro Hayashi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Sintered metal parts and their production method
- Patent number 5,259,860
- Issue date Nov 9, 1993
- Hitachi Powdered Metals Co., Ltd.
- Yutaka Ikenoue
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
Production method for sintered valve guide
- Publication number 20100080725
- Publication date Apr 1, 2010
- Hitachi Powdered Metals Co., Ltd.
- Hiroki Fujitsuka
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Sintered valve guide and manufacturing method thereof
- Publication number 20060032328
- Publication date Feb 16, 2006
- Katsunao Chikahata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Production method for sintered component made of stainless steel wi...
- Publication number 20050095163
- Publication date May 5, 2005
- Hitachi Powdered Metals Co., Ltd.
- Tatsuaki Yoshihiro
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Valve guide for internal combustion engine made from iron base sint...
- Publication number 20050040358
- Publication date Feb 24, 2005
- Hitachi Powdered Metals Co., Ltd.
- Katsunao Chikahata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Material for valve guides
- Publication number 20020023518
- Publication date Feb 28, 2002
- Katsunao Chikahata
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...