Kousei Yokoyama

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Ibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electric tool and battery pack for the electric tool
- Patent number 9,748,534
- Issue date Aug 29, 2017
- Hitachi Koki Co., Ltd.
- Hiroyuki Hanawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Battery pack and motor-driven tool using the same
- Patent number 8,684,106
- Issue date Apr 1, 2014
- Hitachi Koki Co., Ltd.
- Hiroyuki Hanawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Cordless power tool and battery device used for same
- Patent number 8,198,835
- Issue date Jun 12, 2012
- Hitachi Koki Co., Ltd.
- Kousei Yokoyama
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Grant
Battery pack and motor-driven tool using the same
- Patent number 7,807,293
- Issue date Oct 5, 2010
- Hitachi Koki Co., Ltd.
- Hiroyuki Hanawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

Information Patent Application
ELECTRIC TOOL AND BATTERY PACK FOR THE ELECTRIC TOOL
- Publication number 20140294483
- Publication date Oct 2, 2014
- Hitachi Koki Co., Ltd.
- Hiroyuki Hanawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
BATTERY PACK AND MOTOR-DRIVEN TOOL USING THE SAME
- Publication number 20110005793
- Publication date Jan 13, 2011
- HTIACHI KOKI CO., LTD.
- Hiroyuki Hanawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
Battery Pack and Motor-Driven Tool Using the Same
- Publication number 20100112435
- Publication date May 6, 2010
- Hitachi Koki Co., Ltd.
- Hiroyuki Hanawa
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information Patent Application
CORDLESS POWER TOOL AND BATTERY DEVICE USED FOR SAME
- Publication number 20090237012
- Publication date Sep 24, 2009
- Kousei Yokoyama
- B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS