Tetsu Ogawa

Person

Ishikawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Retardation matching using the liquid crystal twist angle for diffe...
- Patent number 6,661,484
- Issue date Dec 9, 2003
- Matsushita Electric Industrial Co., Ltd.
- Yoshio Iwai
- G02 - OPTICS
Information Patent Grant
Reflection type liquid crystal display device
- Patent number 6,633,352
- Issue date Oct 14, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Reflective liquid crystal display apparatus
- Patent number 6,608,659
- Issue date Aug 19, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hiroaki Mizuno
- G02 - OPTICS
Information Patent Grant
Reflective liquid crystal display element and image display device...
- Patent number 6,597,421
- Issue date Jul 22, 2003
- Matsushita Electric Industrial Co., Ltd.
- Takayuki Hatanaka
- G02 - OPTICS
Information Patent Grant
Reflection liquid crystal display device
- Patent number 6,567,149
- Issue date May 20, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Liquid crystal display and manufacture therefore
- Patent number 6,522,378
- Issue date Feb 18, 2003
- Matsushita Electric Industrial Co., Ltd.
- Hiroaki Mizuno
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Reflection liquid crystal display element
- Patent number 6,480,251
- Issue date Nov 12, 2002
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Reflective liquid crystal display device
- Patent number 6,426,785
- Issue date Jul 30, 2002
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Reflection liquid crystal display
- Patent number 6,404,471
- Issue date Jun 11, 2002
- Matsushita Electric Industrial Co., Ltd.
- Takayuki Hatanaka
- G02 - OPTICS
Information Patent Grant
Reflective LCD device with low visual angle dependency and high con...
- Patent number 6,300,990
- Issue date Oct 9, 2001
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Reflective liquid crystal display device
- Patent number 6,297,863
- Issue date Oct 2, 2001
- Matsushita Electric Industrial Co. Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Reflection type liquid crystal display device
- Patent number 6,278,508
- Issue date Aug 21, 2001
- Matsushita Electric Industrial Co., Ltd.
- Tetsu Ogawa
- G02 - OPTICS
Information Patent Grant
Reflective liquid crystal display device
- Patent number 6,144,432
- Issue date Nov 7, 2000
- Matsushita Electric Industrial Co., Ltd.
- Takayuki Hatanaka
- G02 - OPTICS
Information Patent Grant
Reflective liquid crystal display device having front scattering films
- Patent number 6,130,735
- Issue date Oct 10, 2000
- Matsushita Electric Industrial Co., Ltd.
- Takayuki Hatanaka
- G02 - OPTICS
Information Patent Grant
Liquid crystal display device with color filters between reflector...
- Patent number 6,122,027
- Issue date Sep 19, 2000
- Matsushita Electric Industrial Co., Ltd.
- Tetsu Ogawa
- G02 - OPTICS
Information Patent Grant
Color liquid crystal display device using polymer and polarization...
- Patent number 6,055,033
- Issue date Apr 25, 2000
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Liquid crystal display with a metallic reflecting electrode having...
- Patent number 6,011,605
- Issue date Jan 4, 2000
- Matsushita Electric Industrial Co., Ltd.
- Hiroaki Mizuno
- G02 - OPTICS
Information Patent Grant
Liquid crystal display device capable of displaying color without a...
- Patent number 5,982,463
- Issue date Nov 9, 1999
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS
Information Patent Grant
Active matrix type liquid crystal display device with peripheral pi...
- Patent number 5,373,378
- Issue date Dec 13, 1994
- Matsushita Electric Industrial Co. Ltd.
- Yoneharu Takubo
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Spatial light modulating element and neural network circuit
- Patent number 5,056,897
- Issue date Oct 15, 1991
- Matsushita Electric Industrial Co., Ltd.
- Koji Akiyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical filter and the method of preparing the same
- Patent number 4,725,460
- Issue date Feb 16, 1988
- Matsushita Electric Industrial Co., Ltd.
- Yoshihiro Matsuo
- G02 - OPTICS
Information Patent Grant
Color liquid crystal display apparatus
- Patent number 4,632,514
- Issue date Dec 30, 1986
- Matsushita Electric Industrial Co., Ltd.
- Tetsu Ogawa
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
REFLECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE
- Publication number 20030103175
- Publication date Jun 5, 2003
- HISANORI YAMAGUCHI
- G02 - OPTICS
Information Patent Application
Reflective liquid crystal display device
- Publication number 20010048495
- Publication date Dec 6, 2001
- Matsushita Electric Industrial Co., Ltd.
- Hisanori Yamaguchi
- G02 - OPTICS

Tetsu Ogawa

Person

Patents Grantslast 30 patents

Retardation matching using the liquid crystal twist angle for diffe...

Reflection type liquid crystal display device

Reflective liquid crystal display apparatus

Reflective liquid crystal display element and image display device...

Reflection liquid crystal display device

Liquid crystal display and manufacture therefore

Reflection liquid crystal display element

Reflective liquid crystal display device

Reflection liquid crystal display

Reflective LCD device with low visual angle dependency and high con...

Reflective liquid crystal display device

Reflection type liquid crystal display device

Reflective liquid crystal display device

Reflective liquid crystal display device having front scattering films

Liquid crystal display device with color filters between reflector...

Color liquid crystal display device using polymer and polarization...

Liquid crystal display with a metallic reflecting electrode having...

Liquid crystal display device capable of displaying color without a...

Active matrix type liquid crystal display device with peripheral pi...

Spatial light modulating element and neural network circuit

Optical filter and the method of preparing the same

Color liquid crystal display apparatus

Patents Applicationslast 30 patents

REFLECTION TYPE LIQUID CRYSTAL DISPLAY DEVICE

Reflective liquid crystal display device