Keiji Tanaka

Person

Kamifukuoka-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical termination system
- Patent number 7,835,268
- Issue date Nov 16, 2010
- KDDI Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for dynamically establishing logical link in PON systems and...
- Patent number 7,558,482
- Issue date Jul 7, 2009
- KDDI Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system, optical transmission line and optical...
- Patent number 6,768,872
- Issue date Jul 27, 2004
- KDD Corporation
- Takehiro Tsuritani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber transmission line
- Patent number 6,754,420
- Issue date Jun 22, 2004
- KDDI Submarine Cable Systems Inc.
- Takehiro Tsuritani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Dispersion compensating optical transmission line and system
- Patent number 6,594,428
- Issue date Jul 15, 2003
- KDD Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying transmission system and optical amplifier
- Patent number 6,504,638
- Issue date Jan 7, 2003
- KDD Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying transmission system and optical amplifier
- Patent number 6,115,173
- Issue date Sep 5, 2000
- KDD Corporation
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical devices with high polymer material and method of forming th...
- Patent number 5,751,452
- Issue date May 12, 1998
- Nippon Telegraph & Telephone Corporation
- Keiji Tanaka
- G02 - OPTICS
Information Patent Grant
Method for making an optical device using a laser beam interference...
- Patent number 5,748,272
- Issue date May 5, 1998
- Nippon Telegraph & Telephone Corporation
- Keiji Tanaka
- G02 - OPTICS
Information Patent Grant
Thin film transistor
- Patent number 5,124,769
- Issue date Jun 23, 1992
- Nippon Telegraph & Telephone Corporation
- Keiji Tanaka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL COMMUNICATION NETWORK SYSTEM, PARENT STATION OPTICAL COMMUN...
- Publication number 20090263133
- Publication date Oct 22, 2009
- MITSUBISHI ELECTRIC CORPORATION
- Junichi Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Differential circuit providing a function to cancel input offset vo...
- Publication number 20090079502
- Publication date Mar 26, 2009
- Keiji Tanaka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Differential circuit with precisely controlled terminator circuit
- Publication number 20080240739
- Publication date Oct 2, 2008
- Keiji Tanaka
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Auto-power control circuit to maintain extinction ratio of optical...
- Publication number 20080212628
- Publication date Sep 4, 2008
- Keiji Tanaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical termination system
- Publication number 20070058973
- Publication date Mar 15, 2007
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Method for dynamically establishing logical link in PON systems and...
- Publication number 20060083245
- Publication date Apr 20, 2006
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Control method of xDSL modem and xDSL modem
- Publication number 20050185705
- Publication date Aug 25, 2005
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
L2 switch and control method therof
- Publication number 20050041680
- Publication date Feb 24, 2005
- Keiji Tanaka
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Dispersion compensating optical transmission line and optical trans...
- Publication number 20020131711
- Publication date Sep 19, 2002
- Keiji Tanaka
- G02 - OPTICS
Information Patent Application
Optical fiber transmission line
- Publication number 20020118936
- Publication date Aug 29, 2002
- Takehiro Tsuritani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmitter
- Publication number 20020063920
- Publication date May 30, 2002
- Itsuro Morita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Keiji Tanaka

Person

Patents Grantslast 30 patents

Optical termination system

Method for dynamically establishing logical link in PON systems and...

Optical transmission system, optical transmission line and optical...

Optical fiber transmission line

Dispersion compensating optical transmission line and system

Optical amplifying transmission system and optical amplifier

Optical amplifying transmission system and optical amplifier

Optical devices with high polymer material and method of forming th...

Method for making an optical device using a laser beam interference...

Thin film transistor

Patents Applicationslast 30 patents

OPTICAL COMMUNICATION NETWORK SYSTEM, PARENT STATION OPTICAL COMMUN...

Differential circuit providing a function to cancel input offset vo...

Differential circuit with precisely controlled terminator circuit

Auto-power control circuit to maintain extinction ratio of optical...

Optical termination system

Method for dynamically establishing logical link in PON systems and...

Control method of xDSL modem and xDSL modem

L2 switch and control method therof

Dispersion compensating optical transmission line and optical trans...

Optical fiber transmission line

Optical transmitter