Koji Asahi

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Monitoring system, monitoring device, monitoring method, and non-tr...
- Patent number 12,094,210
- Issue date Sep 17, 2024
- NEC Corporation
- Yukihide Yoda
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Monitoring system, monitoring device, monitoring method, and non-tr...
- Patent number 12,078,769
- Issue date Sep 3, 2024
- NEC Corporation
- Yukihide Yoda
- G01 - MEASURING TESTING
Information Patent Grant
Utility pole deterioration detection system, utility pole deteriora...
- Patent number 11,994,417
- Issue date May 28, 2024
- NEC Corporation
- Yukihide Yoda
- G01 - MEASURING TESTING
Information Patent Grant
Utility pole location specifying system, utility pole location spec...
- Patent number 11,747,175
- Issue date Sep 5, 2023
- NEC Corporation
- Yukihide Yoda
- G01 - MEASURING TESTING
Information Patent Grant
State specifying system, state specifying apparatus, state specifyi...
- Patent number 11,561,118
- Issue date Jan 24, 2023
- NEC Corporation
- Yukihide Yoda
- G01 - MEASURING TESTING
Information Patent Grant
Optical feedback control unit, optical communication system, feedba...
- Patent number 7,649,162
- Issue date Jan 19, 2010
- Takefumi Oguma
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system, optical repeating apparatus, and quali...
- Patent number 7,339,723
- Issue date Mar 4, 2008
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical cross-connect apparatus, and its signal monitoring method
- Patent number 6,724,953
- Issue date Apr 20, 2004
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical crossconnect, optical network device, and connection status...
- Patent number 6,704,508
- Issue date Mar 9, 2004
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission system
- Patent number 6,619,867
- Issue date Sep 16, 2003
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Node for optical communication and wavelength-division multiplexing...
- Patent number 6,570,685
- Issue date May 27, 2003
- NEC Corporation
- Sadao Fujita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical cross-connect, method of switching over optical path, optic...
- Patent number 6,532,089
- Issue date Mar 11, 2003
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Bit rate-selective type optical receiver, optical regenerative repe...
- Patent number 6,337,886
- Issue date Jan 8, 2002
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication node and wavelength division multiplexing opt...
- Patent number 6,222,653
- Issue date Apr 24, 2001
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical WDM ring network
- Patent number 6,195,186
- Issue date Feb 27, 2001
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
NXN light matrix switch
- Patent number 6,034,800
- Issue date Mar 7, 2000
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical wavelength-division multiplex transmission equipment with a...
- Patent number 6,023,359
- Issue date Feb 8, 2000
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical filter with transmission wavelength band controlling functi...
- Patent number 5,786,591
- Issue date Jul 28, 1998
- NEC Corporation
- Koji Asahi
- G02 - OPTICS
Information Patent Grant
Monitor control signal receiving apparatus for optical fiber amplifier
- Patent number 5,563,731
- Issue date Oct 8, 1996
- NEC Corporation
- Koji Asahi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
UTILITY POLE DETERIORATION DETECTION SYSTEM, UTILITY POLE DETERIORA...
- Publication number 20240271969
- Publication date Aug 15, 2024
- NEC Corporation
- Yukihide YODA
- G01 - MEASURING TESTING
Information Patent Application
MONITORING SYSTEM, MONITORING DEVICE, MONITORING METHOD, AND NON-TR...
- Publication number 20220172479
- Publication date Jun 2, 2022
- NEC Corporation
- Yukihide YODA
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MONITORING SYSTEM, MONITORING DEVICE, MONITORING METHOD, AND NON-TR...
- Publication number 20220171082
- Publication date Jun 2, 2022
- NEC Corporation
- Yukihide YODA
- G01 - MEASURING TESTING
Information Patent Application
STATE SPECIFYING SYSTEM, STATE SPECIFYING APPARATUS, STATE SPECIFYI...
- Publication number 20210247214
- Publication date Aug 12, 2021
- NEC Corporation
- Yukihide YODA
- G01 - MEASURING TESTING
Information Patent Application
UTILITY POLE DETERIORATION DETECTION SYSTEM, UTILITY POLE DETERIORA...
- Publication number 20210247215
- Publication date Aug 12, 2021
- NEC Corporation
- Yukihide YODA
- G01 - MEASURING TESTING
Information Patent Application
UTILITY POLE LOCATION SPECIFYING SYSTEM, UTILITY POLE LOCATION SPEC...
- Publication number 20210172767
- Publication date Jun 10, 2021
- NEC Corporation
- Yukihide YODA
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL FEEDBACK CONTROL UNIT, OPTICAL COMMUNICATION SYSTEM, FEEDBA...
- Publication number 20080217511
- Publication date Sep 11, 2008
- TAKEFUMI OGUMA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission system, optical repeating apparatus, and quali...
- Publication number 20050220387
- Publication date Oct 6, 2005
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical cross-connect apparatus, and its signal monitoring method
- Publication number 20010022875
- Publication date Sep 20, 2001
- NEC Corporation
- Koji Asahi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Person

Patents Grantslast 30 patents

Monitoring system, monitoring device, monitoring method, and non-tr...

Monitoring system, monitoring device, monitoring method, and non-tr...

Utility pole deterioration detection system, utility pole deteriora...

Utility pole location specifying system, utility pole location spec...

State specifying system, state specifying apparatus, state specifyi...

Optical feedback control unit, optical communication system, feedba...

Optical transmission system, optical repeating apparatus, and quali...

Optical cross-connect apparatus, and its signal monitoring method

Optical crossconnect, optical network device, and connection status...

Optical transmission system

Node for optical communication and wavelength-division multiplexing...

Optical cross-connect, method of switching over optical path, optic...

Bit rate-selective type optical receiver, optical regenerative repe...

Optical communication node and wavelength division multiplexing opt...

Optical WDM ring network

NXN light matrix switch

Optical wavelength-division multiplex transmission equipment with a...

Optical filter with transmission wavelength band controlling functi...

Monitor control signal receiving apparatus for optical fiber amplifier

Patents Applicationslast 30 patents

UTILITY POLE DETERIORATION DETECTION SYSTEM, UTILITY POLE DETERIORA...

MONITORING SYSTEM, MONITORING DEVICE, MONITORING METHOD, AND NON-TR...

MONITORING SYSTEM, MONITORING DEVICE, MONITORING METHOD, AND NON-TR...

STATE SPECIFYING SYSTEM, STATE SPECIFYING APPARATUS, STATE SPECIFYI...

UTILITY POLE DETERIORATION DETECTION SYSTEM, UTILITY POLE DETERIORA...

UTILITY POLE LOCATION SPECIFYING SYSTEM, UTILITY POLE LOCATION SPEC...

OPTICAL FEEDBACK CONTROL UNIT, OPTICAL COMMUNICATION SYSTEM, FEEDBA...

Optical transmission system, optical repeating apparatus, and quali...

Optical cross-connect apparatus, and its signal monitoring method