Shuuho Yokokawa

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Exposure device of electrophotographic apparatus with optical path...
- Patent number 5,818,496
- Issue date Oct 6, 1998
- Hitachi Koki Co., Ltd.
- Youji Hirose
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Optical recorder having a signal separation circuit and a FIFO memo...
- Patent number 5,578,819
- Issue date Nov 26, 1996
- Hitachi Koki Co., Ltd.
- Keiji Kataoka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electrophotographic printing system including a plurality of electr...
- Patent number 5,572,290
- Issue date Nov 5, 1996
- Hitachi Koki Co., Ltd.
- Hiroshi Ueno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device in electrophotographic apparatus including develo...
- Patent number 5,545,840
- Issue date Aug 13, 1996
- Hitachi Koki Co., Ltd.
- Koji Doi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing apparatus having developer regulating member
- Patent number 5,516,982
- Issue date May 14, 1996
- Hitachi Koki Co., Ltd.
- Youichi Takeuchi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Developing device having a developer mixing chamber for use in elec...
- Patent number 5,453,820
- Issue date Sep 26, 1995
- Hitachi Koki Co., Ltd.
- Hiroshi Ueno
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Optical recording apparatus and method for adding information in a...
- Patent number 5,402,409
- Issue date Mar 28, 1995
- Hitachi Koki Co., Ltd.
- Keiji Kataoka
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Toner density detection method for electrophotographic apparatus
- Patent number 5,359,396
- Issue date Oct 25, 1994
- Hitachi Koki Co., Ltd.
- Yoshio Ogura
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Foreign matter removing mechanism for electrophotographic printer
- Patent number 5,359,394
- Issue date Oct 25, 1994
- Hitachi Koki Co., Ltd.
- Hiroyuki Ogawa
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Shuuho Yokokawa

Person

Patents Grantslast 30 patents

Exposure device of electrophotographic apparatus with optical path...

Optical recorder having a signal separation circuit and a FIFO memo...

Electrophotographic printing system including a plurality of electr...

Developing device in electrophotographic apparatus including develo...

Developing apparatus having developer regulating member

Developing device having a developer mixing chamber for use in elec...

Optical recording apparatus and method for adding information in a...

Toner density detection method for electrophotographic apparatus

Foreign matter removing mechanism for electrophotographic printer