Tetsufumi TSUZAKI

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical transmission path inspecting system, and optical transmissi...
- Patent number 12,111,224
- Issue date Oct 8, 2024
- SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
- Gouichi Fukumoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Measurement system
- Patent number 11,965,801
- Issue date Apr 23, 2024
- SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
- Kazuya Masuda
- G01 - MEASURING TESTING
Information Patent Grant
Measurement system and measurement method
- Patent number 10,523,317
- Issue date Dec 31, 2019
- Sumitomo Electric Industries, Ltd.
- Kazuya Masuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 9,583,911
- Issue date Feb 28, 2017
- Sei Optifrontier Co., Ltd.
- Fumiya Uehara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier and optical communication system including the same
- Patent number 7,307,782
- Issue date Dec 11, 2007
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Analog optical transmission system
- Patent number 7,110,648
- Issue date Sep 19, 2006
- Sumitomo Electric Industries, Ltd.
- Toshiyuki Miyamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier
- Patent number 7,046,428
- Issue date May 16, 2006
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical fiber component for Raman amplification, Raman amplifier an...
- Patent number 6,958,857
- Issue date Oct 25, 2005
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier and optical amplification method
- Patent number 6,952,309
- Issue date Oct 4, 2005
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier module and optical transmission system using the same
- Patent number 6,819,477
- Issue date Nov 16, 2004
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication system
- Patent number 6,819,829
- Issue date Nov 16, 2004
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier and optical communication system
- Patent number 6,813,065
- Issue date Nov 2, 2004
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplification pumping module, Raman amplifier, and optical co...
- Patent number 6,806,999
- Issue date Oct 19, 2004
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Raman amplifier
- Patent number 6,775,055
- Issue date Aug 10, 2004
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL TRANSMISSION PATH INSPECTING SYSTEM, AND OPTICAL TRANSMISSI...
- Publication number 20220236141
- Publication date Jul 28, 2022
- SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
- Gouichi FUKUMOTO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MEASUREMENT SYSTEM
- Publication number 20210239569
- Publication date Aug 5, 2021
- SUMITOMO ELECTRIC OPTIFRONTIER CO., LTD.
- Kazuya MASUDA
- G01 - MEASURING TESTING
Information Patent Application
MEASUREMENT SYSTEM AND MEASUREMENT METHOD
- Publication number 20190372665
- Publication date Dec 5, 2019
- Sumitomo Electric Industries, Ltd.
- Kazuya MASUDA
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL SWITCHING UNIT AND OPTICAL SWITCHING DEVICE
- Publication number 20170289653
- Publication date Oct 5, 2017
- Sumitomo Electric Industries, Ltd.
- Tetsufumi TSUZAKI
- G02 - OPTICS
Information Patent Application
OPTICAL AMPLIFIER
- Publication number 20160261087
- Publication date Sep 8, 2016
- SEI Optifrontier Co., Ltd.
- Fumiya UEHARA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier and optical communication system including the same
- Publication number 20080074733
- Publication date Mar 27, 2008
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Analog optical transmission system
- Publication number 20060045534
- Publication date Mar 2, 2006
- Toshiyuki Miyamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplifier
- Publication number 20040240039
- Publication date Dec 2, 2004
- Sumitomo Electric Industries, Ltd.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplifier and optical communication system including the same
- Publication number 20040156095
- Publication date Aug 12, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical fiber product and method of fabricating thereof, Raman ampl...
- Publication number 20040062495
- Publication date Apr 1, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- G02 - OPTICS
Information Patent Application
Optical fiber component for Raman amplification, Raman amplifier an...
- Publication number 20040008994
- Publication date Jan 15, 2004
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical fiber, optical component, dispersion compensating fiber mod...
- Publication number 20030169986
- Publication date Sep 11, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplification pumping module, Raman amplifier, and optical co...
- Publication number 20030123138
- Publication date Jul 3, 2003
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier and optical communication system including the same
- Publication number 20030063371
- Publication date Apr 3, 2003
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical communication system
- Publication number 20020102051
- Publication date Aug 1, 2002
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier
- Publication number 20020024721
- Publication date Feb 28, 2002
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplifier and optical communication system
- Publication number 20020024722
- Publication date Feb 28, 2002
- Tetsufumi Tsuzaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Raman amplifier module and optical transmission system using the same
- Publication number 20020012161
- Publication date Jan 31, 2002
- SUMITOMO ELECTRIC INDUSTRIES, LTD.
- Tetsufumi Tsuzaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Tetsufumi TSUZAKI

Person

Patents Grantslast 30 patents

Optical transmission path inspecting system, and optical transmissi...

Measurement system

Measurement system and measurement method

Optical amplifier

Raman amplifier and optical communication system including the same

Analog optical transmission system

Raman amplifier

Optical fiber component for Raman amplification, Raman amplifier an...

Optical amplifier and optical amplification method

Raman amplifier module and optical transmission system using the same

Optical communication system

Raman amplifier and optical communication system

Raman amplification pumping module, Raman amplifier, and optical co...

Raman amplifier

Patents Applicationslast 30 patents

OPTICAL TRANSMISSION PATH INSPECTING SYSTEM, AND OPTICAL TRANSMISSI...

MEASUREMENT SYSTEM

MEASUREMENT SYSTEM AND MEASUREMENT METHOD

OPTICAL SWITCHING UNIT AND OPTICAL SWITCHING DEVICE

OPTICAL AMPLIFIER

Raman amplifier and optical communication system including the same

Analog optical transmission system

Raman amplifier

Raman amplifier and optical communication system including the same

Optical fiber product and method of fabricating thereof, Raman ampl...

Optical fiber component for Raman amplification, Raman amplifier an...

Optical fiber, optical component, dispersion compensating fiber mod...

Raman amplification pumping module, Raman amplifier, and optical co...

Raman amplifier and optical communication system including the same

Optical communication system

Raman amplifier

Raman amplifier and optical communication system

Raman amplifier module and optical transmission system using the same