Hiroharu Wakabayashi

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Demultiplexer device for wavelength-division multiplexed optical fi...
- Patent number 6,115,156
- Issue date Sep 5, 2000
- Kokusai Denshin Denwa Kabushiki Daisha
- Tomohiro Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Supervisory signal receiving method and apparatus
- Patent number 5,539,557
- Issue date Jul 23, 1996
- Kokusai Denshin Denwa Kabushiki Kaisha
- Yukio Horiuchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communication system
- Patent number 5,471,333
- Issue date Nov 28, 1995
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hidenori Taga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmitter with the signal light of reduced degree of pola...
- Patent number 5,430,795
- Issue date Jul 4, 1995
- Kokusai Denshin Denwa Company, Limited
- Hidenori Taga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus for chromatic dispersion measurements
- Patent number 5,406,368
- Issue date Apr 11, 1995
- Kokusai Denshin Denwa Kabushiki Kaisha
- Yukio Horiuchi
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for monitoring the operation of an optical repeater
- Patent number 5,162,936
- Issue date Nov 10, 1992
- Kokusai Denshin Denwa Company, Ltd.
- Hidenori Taga
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Long-distance high-speed optical communication scheme
- Patent number 5,140,452
- Issue date Aug 18, 1992
- Kokusai Denshin Denwa Company, Ltd.
- Shu Yamamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Pumping light source drive system for an optical amplifier
- Patent number 5,138,621
- Issue date Aug 11, 1992
- Kokusai Denshin Denwa Kabushiki Kaisha
- Koji Goto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Er-doped optical fiber laser device
- Patent number 5,042,039
- Issue date Aug 20, 1991
- Kokusai Benshin Kabushiki Kaisha
- Noboru Edagawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical privacy communication system in two-way optical transmissio...
- Patent number 4,933,990
- Issue date Jun 12, 1990
- Kokusai Denshin Denwa Kabushiki Kaisha
- Kiyofumi Mochizuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Device for switching from one light source to another
- Patent number 4,720,162
- Issue date Jan 19, 1988
- Kokusai Denshin Denwa Kabushiki Kaisha
- Kiyofumi Mochizuki
- G02 - OPTICS
Information Patent Grant
Optical repeater monitoring system
- Patent number 4,710,976
- Issue date Dec 1, 1987
- Kokusai Denshin Denwa Co., Ltd.
- Hiroharu Wakabayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light dispersion measuring apparatus
- Patent number 4,411,520
- Issue date Oct 25, 1983
- Kokusai Denshin Denwa Kabushiki Kaisha
- Kiyofumi Mochizuki
- G01 - MEASURING TESTING
Information Patent Grant
Optical switch
- Patent number 4,408,831
- Issue date Oct 11, 1983
- Kokusai Denshin Denwa Co., Ltd.
- Haruo Sakaguchi
- G02 - OPTICS
Information Patent Grant
Fault location system in an optical fiber transmission system
- Patent number 4,320,968
- Issue date Mar 23, 1982
- Kokusai Denshin Denwa Co., Ltd.
- Hiroharu Wakabayashi
- G01 - MEASURING TESTING
Information Patent Grant
Monitoring system of an optical power in an optical repeater
- Patent number 4,313,224
- Issue date Jan 26, 1982
- Kokusai Denshin Denwa Co., Ltd.
- Hiroharu Wakabayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for measuring an optical loss in a single mode optical fiber
- Patent number 4,304,489
- Issue date Dec 8, 1981
- Kokusai Denshin Denwa Co., Ltd.
- Hiroharu Wakabayashi
- G01 - MEASURING TESTING
Information Patent Grant
Optical repeater monitoring system
- Patent number 4,300,239
- Issue date Nov 10, 1981
- Kokusai Denshin Denwa Co., Ltd.
- Hiroharu Wakabayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Monitoring system for optical transmission line repeaters
- Patent number 4,278,850
- Issue date Jul 14, 1981
- Kokusai Denshin Denwa Co., Ltd.
- Masanori Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Selection system for digital signal repeaters
- Patent number 4,270,029
- Issue date May 26, 1981
- Kokusai Denshin Denwa Kabushiki Kaisha
- Masanori Sato
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical-fiber submarine cable and manufacturing method thereof
- Patent number 4,257,675
- Issue date Mar 24, 1981
- Kokusai Denshin Denwa Kabushiki Kaisha
- Yukio Nakagome
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Fault location system for optical repeating paths
- Patent number 4,211,920
- Issue date Jul 8, 1980
- Kokusai Denshin Denwa Kabushiki Kaisha
- Hiroharu Wakabayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic equalization system
- Patent number 4,201,959
- Issue date May 6, 1980
- Kokusai Denshin Denwa Co., Ltd.
- Yasuhiko Niiro
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hiroharu Wakabayashi

Person

Patents Grantslast 30 patents

Demultiplexer device for wavelength-division multiplexed optical fi...

Supervisory signal receiving method and apparatus

Optical communication system

Optical transmitter with the signal light of reduced degree of pola...

Method and apparatus for chromatic dispersion measurements

Apparatus for monitoring the operation of an optical repeater

Long-distance high-speed optical communication scheme

Pumping light source drive system for an optical amplifier

Er-doped optical fiber laser device

Optical privacy communication system in two-way optical transmissio...

Device for switching from one light source to another

Optical repeater monitoring system

Light dispersion measuring apparatus

Optical switch

Fault location system in an optical fiber transmission system

Monitoring system of an optical power in an optical repeater

System for measuring an optical loss in a single mode optical fiber

Optical repeater monitoring system

Monitoring system for optical transmission line repeaters

Selection system for digital signal repeaters

Optical-fiber submarine cable and manufacturing method thereof

Fault location system for optical repeating paths

Automatic equalization system