Tadashi Koga

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Communication apparatus, communication system, communication method...
- Patent number 12,267,112
- Issue date Apr 1, 2025
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver and receiving method
- Patent number 11,621,783
- Issue date Apr 4, 2023
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver and optical reception method
- Patent number 10,924,190
- Issue date Feb 16, 2021
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal reception processing apparatus and method for processing rec...
- Patent number 9,654,228
- Issue date May 16, 2017
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter with driving voltage control and method
- Patent number 7,991,299
- Issue date Aug 2, 2011
- NEC Corporation
- Morihiko Ota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver, optical receiving apparatus using the optical rec...
- Patent number 7,860,409
- Issue date Dec 28, 2010
- NEC Corporation
- Masaki Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Frequency detection circuit, optical receiver and optical transmiss...
- Patent number 7,212,748
- Issue date May 1, 2007
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplex optical transmission apparatus
- Patent number 6,369,922
- Issue date Apr 9, 2002
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical receiver board, optical wavelength-tuning filter module use...
- Patent number 6,043,922
- Issue date Mar 28, 2000
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength division multiplexing light transmitting system
- Patent number 5,995,254
- Issue date Nov 30, 1999
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method for transmitting WDM optical signal to be amplified by optic...
- Patent number 5,912,754
- Issue date Jun 15, 1999
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD...
- Publication number 20230291481
- Publication date Sep 14, 2023
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER AND RECEIVING METHOD
- Publication number 20210203421
- Publication date Jul 1, 2021
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER AND OPTICAL RECEPTION METHOD
- Publication number 20200336215
- Publication date Oct 22, 2020
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL MODULATOR, OPTICAL TRANSMITTER, AND OPTICAL MODULATION METHOD
- Publication number 20180269980
- Publication date Sep 20, 2018
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
SIGNAL RECEPTION PROCESSING APPARATUS AND METHOD FOR PROCESSING REC...
- Publication number 20160112155
- Publication date Apr 21, 2016
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVING APPARATUS AND BALANCE ADJUSTMENT METHOD
- Publication number 20080219680
- Publication date Sep 11, 2008
- Kumi Omori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL RECEIVER, OPTICAL RECEIVING APPARATUS USING THE OPTICAL REC...
- Publication number 20080212982
- Publication date Sep 4, 2008
- NEC Corporation
- Masaki Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION CONTROL METHOD
- Publication number 20080212979
- Publication date Sep 4, 2008
- Morihiko Ota
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frequency detection circuit, optical receiver and optical transmiss...
- Publication number 20030113122
- Publication date Jun 19, 2003
- NEC Corporation
- Tadashi Koga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Tadashi Koga

Person

Patents Grantslast 30 patents

Communication apparatus, communication system, communication method...

Optical receiver and receiving method

Optical receiver and optical reception method

Signal reception processing apparatus and method for processing rec...

Optical transmitter with driving voltage control and method

Optical receiver, optical receiving apparatus using the optical rec...

Frequency detection circuit, optical receiver and optical transmiss...

Wavelength division multiplex optical transmission apparatus

Optical receiver board, optical wavelength-tuning filter module use...

Wavelength division multiplexing light transmitting system

Method for transmitting WDM optical signal to be amplified by optic...

Patents Applicationslast 30 patents

COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD...

OPTICAL RECEIVER AND RECEIVING METHOD

OPTICAL RECEIVER AND OPTICAL RECEPTION METHOD

OPTICAL MODULATOR, OPTICAL TRANSMITTER, AND OPTICAL MODULATION METHOD

SIGNAL RECEPTION PROCESSING APPARATUS AND METHOD FOR PROCESSING REC...

OPTICAL RECEIVING APPARATUS AND BALANCE ADJUSTMENT METHOD

OPTICAL RECEIVER, OPTICAL RECEIVING APPARATUS USING THE OPTICAL REC...

OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION CONTROL METHOD

Frequency detection circuit, optical receiver and optical transmiss...