Kenji Kataoka

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Hitachinaka-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Vibration drill unit
- Patent number 8,672,049
- Issue date Mar 18, 2014
- Hitachi Koki Co., Ltd.
- Junichi Tokairin
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Impact drill
- Patent number 7,658,238
- Issue date Feb 9, 2010
- Hitachi Koki Co., Ltd.
- Jyunichi Toukairin
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Impact drill
- Patent number 7,093,670
- Issue date Aug 22, 2006
- Hitachi Koki Co., Ltd.
- Takuma Saito
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
Vibration drill unit
- Publication number 20070007024
- Publication date Jan 11, 2007
- Junichi Tokairin
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Impact drill
- Publication number 20050028995
- Publication date Feb 10, 2005
- Hitachi Koki Co., Ltd.
- Takuma Saito
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Impact drill
- Publication number 20050028996
- Publication date Feb 10, 2005
- Hitachi Koki Co., Ltd.
- Jyunichi Toukairin
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS