Seiji Maruo

Person

Chitose, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Filter assembly and optical module using same
- Patent number 8,340,522
- Issue date Dec 25, 2012
- Hitachi Cable, Ltd.
- Juhyun Yu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image recording device and an image recording system
- Patent number 7,003,241
- Issue date Feb 21, 2006
- Ricoh Printing Systems, Ltd.
- Shinya Kobayashi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Small-size color electro-photographic apparatus
- Patent number 6,836,632
- Issue date Dec 28, 2004
- Hitachi, Ltd.
- Toru Miyasaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Small-size color electro-photographic apparatus
- Patent number 6,574,451
- Issue date Jun 3, 2003
- Hitachi, Ltd.
- Toru Miyasaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrophotographic printer having an image memory, a horizontal sc...
- Patent number 6,271,874
- Issue date Aug 7, 2001
- Hitachi Koki Co., Ltd.
- Seiji Maruo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electrophotographic printing apparatus using electric potential div...
- Patent number 6,131,000
- Issue date Oct 10, 2000
- Hitachi, Ltd.
- Shinichi Akatsu
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Small-size color electro-photographic apparatus
- Patent number 6,085,051
- Issue date Jul 4, 2000
- Hitachi, Ltd.
- Toru Miyasaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Laser beam printer and semiconductor laser device suitable for a li...
- Patent number 6,055,256
- Issue date Apr 25, 2000
- Hitachi, Ltd.
- Shin'ichi Nakatsuka
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Light beam scanning apparatus which controls power and spot shape o...
- Patent number 5,959,655
- Issue date Sep 28, 1999
- Hitachi, Ltd.
- Seiji Maruo
- G02 - OPTICS
Information Patent Grant
Light exposure controlling method of electrophotographic apparatus...
- Patent number 5,884,119
- Issue date Mar 16, 1999
- Hitachi, Ltd.
- Seiji Maruo
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Electrostatic recording apparatus and electrostatic recording method
- Patent number 5,832,333
- Issue date Nov 3, 1998
- Hitachi Koki Co., Ltd.
- Takao Umeda
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color electro-photographic apparatus
- Patent number 5,815,775
- Issue date Sep 29, 1998
- Hitachi, Ltd.
- Toru Miyasaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Semiconductor laser device and optical printing apparatus using the...
- Patent number 5,809,053
- Issue date Sep 15, 1998
- Hitachi, Ltd.
- Shin'ichi Nakatsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrophotographic image recording apparatus with photoreceptor ex...
- Patent number 5,737,008
- Issue date Apr 7, 1998
- Hitachi Koki Co., Ltd.
- Shinya Kobayashi
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical beam scanning system with rotating beam compensation
- Patent number 5,668,590
- Issue date Sep 16, 1997
- Hitachi, Ltd.
- Seiji Maruo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image forming method and apparatus using energy beam impingement on...
- Patent number 5,666,598
- Issue date Sep 9, 1997
- Hitachi, Ltd.
- Tatsuya Sugita
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Color electro-photographic printing apparatus
- Patent number 5,666,599
- Issue date Sep 9, 1997
- Hitachi, Ltd.
- Toru Miyasaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical scanning apparatus and system
- Patent number 5,255,112
- Issue date Oct 19, 1993
- Hitachi, Ltd.
- Yasuro Hori
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
FILTER ASSEMBLY AND OPTICAL MODULE USING SAME
- Publication number 20080175591
- Publication date Jul 24, 2008
- Juhyun Yu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Small-size color elecrtro-photographic apparatus
- Publication number 20030198496
- Publication date Oct 23, 2003
- Toru Miyasaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Seiji Maruo

Person

Patents Grantslast 30 patents

Filter assembly and optical module using same

Image recording device and an image recording system

Small-size color electro-photographic apparatus

Small-size color electro-photographic apparatus

Electrophotographic printer having an image memory, a horizontal sc...

Electrophotographic printing apparatus using electric potential div...

Small-size color electro-photographic apparatus

Laser beam printer and semiconductor laser device suitable for a li...

Light beam scanning apparatus which controls power and spot shape o...

Light exposure controlling method of electrophotographic apparatus...

Electrostatic recording apparatus and electrostatic recording method

Color electro-photographic apparatus

Semiconductor laser device and optical printing apparatus using the...

Electrophotographic image recording apparatus with photoreceptor ex...

Optical beam scanning system with rotating beam compensation

Image forming method and apparatus using energy beam impingement on...

Color electro-photographic printing apparatus

Optical scanning apparatus and system

Patents Applicationslast 30 patents

FILTER ASSEMBLY AND OPTICAL MODULE USING SAME

Small-size color elecrtro-photographic apparatus