Masumi Koizumi

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Composite semiconductor device, print head and image forming apparatus
- Patent number 8,130,253
- Issue date Mar 6, 2012
- Oki Data Corporation
- Kazuya Ohkawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
LED array, LED head and image recording apparatus
- Patent number 7,847,304
- Issue date Dec 7, 2010
- Oki Data Corporation
- Masumi Taninaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Light-emitting-element array
- Patent number 6,858,875
- Issue date Feb 22, 2005
- Oki Data Corporation
- Hiroshi Hamano
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor array device with single interconnection layer
- Patent number 6,781,246
- Issue date Aug 24, 2004
- Oki Data Corporation
- Hiroyuki Fujiwara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Opto-electronic device with self-aligned ohmic contact layer
- Patent number 6,541,796
- Issue date Apr 1, 2003
- Oki Data Corporation
- Masaharu Nobori
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Organic electroluminescent light-emitting array and optical head as...
- Patent number 6,297,842
- Issue date Oct 2, 2001
- Oki Data Corporation
- Masumi Koizumi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Opto-electronic device with self-aligned ohmic contact layer
- Patent number 6,291,328
- Issue date Sep 18, 2001
- Oki Data Corporation
- Masaharu Nobori
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
LED array alignment mark, method and mask for forming same, and LED...
- Patent number 6,023,104
- Issue date Feb 8, 2000
- Oki Electric Industry Co., Ltd.
- Masumi Koizumi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
End face light emitting type light emitting diode
- Patent number 5,955,748
- Issue date Sep 21, 1999
- Oki Electric Industry Co., Ltd.
- Yukio Nakamura
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
LED array alignment mark, method and mask for forming same, and LED...
- Patent number 5,943,586
- Issue date Aug 24, 1999
- Oki Electric Industry Co., Ltd.
- Masumi Koizumi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
End face light-emitting-type LED, end face light-emitting-type LED...
- Patent number 5,869,848
- Issue date Feb 9, 1999
- Oki Electric Industry Co., Ltd.
- Masaharu Nobori
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating an end face light emitting type light-emittin...
- Patent number 5,866,439
- Issue date Feb 2, 1999
- Oki Electric Industry Co., Ltd.
- Masaharu Nobori
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Diffusion mask and fabrication method for forming pn-junction eleme...
- Patent number 5,700,714
- Issue date Dec 23, 1997
- Oki Electric Industry Co., Ltd.
- Mitsuhiko Ogihara
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating a thin-film transistor matrix for an active m...
- Patent number 5,225,364
- Issue date Jul 6, 1993
- Oki Electric Industry Co., Ltd.
- Tsutomu Nomoto
- G02 - OPTICS
Information Patent Grant
Thin-film transistor matrix for active matrix display panel with al...
- Patent number 5,070,379
- Issue date Dec 3, 1991
- Oki Electric Industry Co., Ltd.
- Tsutomu Nomoto
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Composite semiconductor device, print head and image forming apparatus
- Publication number 20090322852
- Publication date Dec 31, 2009
- Oki Data Corporation
- Kazuya Ohkawa
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
LED ARRAY, LED HEAD AND IMAGE RECORDING APPARATUS
- Publication number 20070228397
- Publication date Oct 4, 2007
- Oki Data Corporation
- Masumi Taninaka
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Light-emitting-element array
- Publication number 20040021145
- Publication date Feb 5, 2004
- Hiroshi Hamano
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Semiconductor array device with single interconnection layer
- Publication number 20040021146
- Publication date Feb 5, 2004
- Hiroyuki Fujiwara
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Opto-electronic device with self-aligned ohmic contact layer
- Publication number 20010054716
- Publication date Dec 27, 2001
- Oki Data Corporation
- Masaharu Nobori
- H01 - BASIC ELECTRIC ELEMENTS

Masumi Koizumi

Person

Patents Grantslast 30 patents

Composite semiconductor device, print head and image forming apparatus

LED array, LED head and image recording apparatus

Light-emitting-element array

Semiconductor array device with single interconnection layer

Opto-electronic device with self-aligned ohmic contact layer

Organic electroluminescent light-emitting array and optical head as...

Opto-electronic device with self-aligned ohmic contact layer

LED array alignment mark, method and mask for forming same, and LED...

End face light emitting type light emitting diode

LED array alignment mark, method and mask for forming same, and LED...

End face light-emitting-type LED, end face light-emitting-type LED...

Method of fabricating an end face light emitting type light-emittin...

Diffusion mask and fabrication method for forming pn-junction eleme...

Method of fabricating a thin-film transistor matrix for an active m...

Thin-film transistor matrix for active matrix display panel with al...

Patents Applicationslast 30 patents

Composite semiconductor device, print head and image forming apparatus

LED ARRAY, LED HEAD AND IMAGE RECORDING APPARATUS

Light-emitting-element array

Semiconductor array device with single interconnection layer

Opto-electronic device with self-aligned ohmic contact layer