Hitoshi MURAI

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical fiber strain and temperature measurement apparatus and opti...
- Patent number 10,871,406
- Issue date Dec 22, 2020
- Oki Electric Industry Co., Ltd.
- Kengo Koizumi
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber strain and temperature measurement apparatus
- Patent number 10,036,672
- Issue date Jul 31, 2018
- Oki Electric Industry Co., Ltd.
- Hideyuki Iwamura
- G01 - MEASURING TESTING
Information Patent Grant
Cascaded optical parametric amplifier with polarization exchange fo...
- Patent number 8,922,874
- Issue date Dec 30, 2014
- Oki Electric Industry Co., Ltd.
- Kouji Inafune
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Wavelength conversion device and wavelength conversion method
- Patent number 8,279,516
- Issue date Oct 2, 2012
- Oki Electric Industry Co., Ltd.
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal generator
- Patent number 8,208,819
- Issue date Jun 26, 2012
- Oki Electric Industry Co., Ltd.
- Masatoshi Kagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical modulator and optical signal generation apparatus
- Patent number 8,107,154
- Issue date Jan 31, 2012
- Oki Electric Industry Co., Ltd.
- Shin Arahira
- G02 - OPTICS
Information Patent Grant
Wavelength conversion device and wavelength conversion method
- Patent number 7,602,544
- Issue date Oct 13, 2009
- Oki Electric Industry Co., Ltd.
- Hitoshi Murai
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical signal generating circuit and optical transmission line
- Patent number 7,116,915
- Issue date Oct 3, 2006
- Oki Electric Industry Co., Ltd.
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical communications apparatus and optical communications system
- Patent number 7,016,611
- Issue date Mar 21, 2006
- Oki Electric Industry Co., Ltd.
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal generating circuit and optical transmission line
- Patent number 6,950,612
- Issue date Sep 27, 2005
- Oki Electric Industry Co., Ltd.
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical signal generating circuit and optical transmission line
- Patent number 6,718,142
- Issue date Apr 6, 2004
- Oki Electric Industry Co., Ltd.
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method of, apparatus for, and recording medium storing a program fo...
- Patent number 6,460,176
- Issue date Oct 1, 2002
- NEC Corporation
- Kenji Suehiro
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Optical short pulse generator
- Patent number 6,411,421
- Issue date Jun 25, 2002
- Oki Electric Industry Co, Ltd.
- Hitoshi Murai
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER STRAIN AND TEMPERATURE MEASUREMENT APPARATUS AND OPTI...
- Publication number 20190094082
- Publication date Mar 28, 2019
- Oki Electric Industry Co., Ltd.
- Kengo KOIZUMI
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL FIBER STRAIN AND TEMPERATURE MEASUREMENT APPARATUS
- Publication number 20180094987
- Publication date Apr 5, 2018
- Oki Electric Industry Co., Ltd.
- Hideyuki IWAMURA
- G01 - MEASURING TESTING
Information Patent Application
OPTICAL AMPLIFICATION DEVICE AND OPTICAL AMPLIFICATION METHOD
- Publication number 20130314769
- Publication date Nov 28, 2013
- Oki Electric Industry Co., Ltd.
- Kouji INAFUNE
- G02 - OPTICS
Information Patent Application
Optical signal generator
- Publication number 20100247097
- Publication date Sep 30, 2010
- Oki Electric Industry Co., Ltd.
- Masatoshi Kagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
WAVELENGTH CONVERSION DEVICE AND WAVELENGTH CONVERSION METHOD
- Publication number 20090219608
- Publication date Sep 3, 2009
- Oki Electric Industry Co., Ltd
- Hitoshi MURAI
- G02 - OPTICS
Information Patent Application
Optical modulator and optical signal generation apparatus
- Publication number 20090195860
- Publication date Aug 6, 2009
- Oki Electric Industry Co., Ltd
- Shin Arahira
- G02 - OPTICS
Information Patent Application
Optical signal generating circuit and optical transmission line
- Publication number 20060285853
- Publication date Dec 21, 2006
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical signal generating circuit and optical transmission line
- Publication number 20050265726
- Publication date Dec 1, 2005
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical signal generating circuit and optical transmission line
- Publication number 20040161247
- Publication date Aug 19, 2004
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical communications apparatus and optical communications system
- Publication number 20020141016
- Publication date Oct 3, 2002
- Hitoshi Murai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Hitoshi MURAI

Person

Patents Grantslast 30 patents

Optical fiber strain and temperature measurement apparatus and opti...

Optical fiber strain and temperature measurement apparatus

Cascaded optical parametric amplifier with polarization exchange fo...

Wavelength conversion device and wavelength conversion method

Optical signal generator

Optical modulator and optical signal generation apparatus

Wavelength conversion device and wavelength conversion method

Optical signal generating circuit and optical transmission line

Optical communications apparatus and optical communications system

Optical signal generating circuit and optical transmission line

Optical signal generating circuit and optical transmission line

Method of, apparatus for, and recording medium storing a program fo...

Optical short pulse generator

Patents Applicationslast 30 patents

OPTICAL FIBER STRAIN AND TEMPERATURE MEASUREMENT APPARATUS AND OPTI...

OPTICAL FIBER STRAIN AND TEMPERATURE MEASUREMENT APPARATUS

OPTICAL AMPLIFICATION DEVICE AND OPTICAL AMPLIFICATION METHOD

Optical signal generator

WAVELENGTH CONVERSION DEVICE AND WAVELENGTH CONVERSION METHOD

Optical modulator and optical signal generation apparatus

Optical signal generating circuit and optical transmission line

Optical signal generating circuit and optical transmission line

Optical signal generating circuit and optical transmission line

Optical communications apparatus and optical communications system