Hiroshi Koyama

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Hollow stabilizer and method of manufacturing the same
- Patent number 7,896,983
- Issue date Mar 1, 2011
- NHK Spring Co., Ltd.
- Hiroshi Koyama
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Hollow stabilizer
- Patent number 6,871,865
- Issue date Mar 29, 2005
- NHK Spring Co., Ltd.
- Tsutomu Furuyama
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Paper wrinkle preventing device
- Patent number 6,116,159
- Issue date Sep 12, 2000
- Kabushiki Kaisha Tokyo Kikai Seisakusho
- Hiroshi Koyama
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
High strength spring
- Patent number 5,258,082
- Issue date Nov 2, 1993
- NHK Spring Co., Ltd.
- Hiroshi Koyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Method for manufacturing a high-strength spring
- Patent number 5,225,008
- Issue date Jul 6, 1993
- NHK Spring Co., Ltd.
- Hiroshi Koyama
- C21 - METALLURGY OF IRON
Information Patent Grant
Method of manufacturing a hollow stabilizer
- Patent number 4,533,402
- Issue date Aug 6, 1985
- NHK Spring Co., Ltd.
- Akira Ohno
- B60 - VEHICLES IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Transfer device for folder unit
- Publication number 20090212480
- Publication date Aug 27, 2009
- Tokyo Kiaki Seisakusho, Ltd.
- Hiroshi Koyama
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Application
Hollow stabilizer and method of manufacturing the same
- Publication number 20060200990
- Publication date Sep 14, 2006
- NHK SPRING CO., LTD
- Hiroshi Koyama
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Hollow stabilizer
- Publication number 20030075895
- Publication date Apr 24, 2003
- Tsutomu Furuyama
- B60 - VEHICLES IN GENERAL
Information Patent Application
Hollow stabilizer and method of manufacturing the same
- Publication number 20020170177
- Publication date Nov 21, 2002
- Hiroshi Koyama
- B60 - VEHICLES IN GENERAL