Koichi Yamamoto

Person

Miyagi-ken, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Input device and keyboard device having illumination function
- Patent number 8,334,794
- Issue date Dec 18, 2012
- Alps Electric Co., Ltd.
- Kazutoshi Watanabe
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Light guiding plate including a plurality of prisms, surface emitti...
- Patent number 7,497,610
- Issue date Mar 3, 2009
- Alps Electric Co., Ltd.
- Takuro Sugiura
- G02 - OPTICS
Information Patent Grant
Surface emitting device and liquid crystal display apparatus
- Patent number 7,121,711
- Issue date Oct 17, 2006
- Alps Electric Co., Ltd.
- Koichi Yamamoto
- G02 - OPTICS
Information Patent Grant
Backlight device and liquid crystal display device
- Patent number 6,981,792
- Issue date Jan 3, 2006
- Alps Electric Co., Ltd.
- Hideaki Nagakubo
- G02 - OPTICS
Information Patent Grant
Switching device including stopper surface-mounted on printed circu...
- Patent number 6,849,817
- Issue date Feb 1, 2005
- Alps Electric Co., Ltd.
- Tomosuke Takata
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
INPUT DETECTION DEVICE
- Publication number 20130069619
- Publication date Mar 21, 2013
- Tomokuni Wauke
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INPUT DEVICE AND KEYBOARD DEVICE HAVING ILLUMINATION FUNCTION
- Publication number 20100097246
- Publication date Apr 22, 2010
- Alps Electric Co., Ltd.
- Kazutoshi WATANABE
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ILLUMINATION DEVICE AND INPUT DEVICE WITH ILLUMINATION FUNCTION HAV...
- Publication number 20090244905
- Publication date Oct 1, 2009
- Alps Electric Co., Ltd.
- Hideyuki ISHIDA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
INPUT DEVICE WITH ILLUMINATION FUNCTION
- Publication number 20090073724
- Publication date Mar 19, 2009
- Alps Electric Co., Ltd.
- Tsuyoshi Hayama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Light guiding plate, surface emitting device using light guiding pl...
- Publication number 20060092668
- Publication date May 4, 2006
- Alps Electric Co., Ltd.
- Takuro Sugiura
- G02 - OPTICS
Information Patent Application
Light guide plate, surface light-emitting unit, and liquid crystal...
- Publication number 20050024890
- Publication date Feb 3, 2005
- Alps Electric Co., Ltd.
- Koichi Yamamoto
- G02 - OPTICS
Information Patent Application
Surface emitting device and liquid crystal display apparatus
- Publication number 20040257795
- Publication date Dec 23, 2004
- Alps Electric Co., Ltd.
- Koichi Yamamoto
- G02 - OPTICS
Information Patent Application
SWITCHING DEVICE INCLUDING STOPPER SURFACE-MOUNTED ON PRINTED CIRCU...
- Publication number 20040226810
- Publication date Nov 18, 2004
- Tomosuke Takata
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Backlight device and liquid crystal display device
- Publication number 20040125592
- Publication date Jul 1, 2004
- Alps Electric Co., Ltd.
- Hideaki Nagakubo
- G02 - OPTICS

Koichi Yamamoto

Person

Patents Grantslast 30 patents

Input device and keyboard device having illumination function

Light guiding plate including a plurality of prisms, surface emitti...

Surface emitting device and liquid crystal display apparatus

Backlight device and liquid crystal display device

Switching device including stopper surface-mounted on printed circu...

Patents Applicationslast 30 patents

INPUT DETECTION DEVICE

INPUT DEVICE AND KEYBOARD DEVICE HAVING ILLUMINATION FUNCTION

ILLUMINATION DEVICE AND INPUT DEVICE WITH ILLUMINATION FUNCTION HAV...

INPUT DEVICE WITH ILLUMINATION FUNCTION

Light guiding plate, surface emitting device using light guiding pl...

Light guide plate, surface light-emitting unit, and liquid crystal...

Surface emitting device and liquid crystal display apparatus

SWITCHING DEVICE INCLUDING STOPPER SURFACE-MOUNTED ON PRINTED CIRCU...

Backlight device and liquid crystal display device