Nobuyuki Kagi

Person

Chiyoda-ku, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Light operation device
- Patent number 10,126,556
- Issue date Nov 13, 2018
- Furukawa Electric Co., Ltd.
- Atsushi Oguri
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier and method of controlling optical amplifier
- Patent number 9,071,035
- Issue date Jun 30, 2015
- Furukawa Electric Co., Ltd.
- Eisuke Otani
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus
- Patent number 7,852,550
- Issue date Dec 14, 2010
- The Furukawa Electric Co., Ltd.
- Takeo Okaniwa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying method, optical amplifying apparatus, and optica...
- Patent number 7,511,883
- Issue date Mar 31, 2009
- The Furukawa Electric Co., Ltd.
- Ryo Kawahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying method, optical amplifying apparatus, and optica...
- Patent number 7,333,262
- Issue date Feb 19, 2008
- The Furukawa Electric Co., Ltd.
- Ryo Kawahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplification apparatus and optical transmission system
- Patent number 6,636,659
- Issue date Oct 21, 2003
- The Furukawa Electric Co., Ltd.
- Nobuyuki Kagi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier and optical wavelength division multiplexing comm...
- Patent number 6,538,803
- Issue date Mar 25, 2003
- The Furukawa Electric Co., Ltd.
- Nobuyuki Kagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quartz glass doped with rare earth element and production thereof
- Patent number 5,262,365
- Issue date Nov 16, 1993
- The Furukawa Electric Co., Ltd.
- Akira Oyobe
- C03 - GLASS MINERAL OR SLAG WOOL

Patents Applicationslast 30 patents

Information Patent Application
LIGHT OPERATION DEVICE
- Publication number 20150355469
- Publication date Dec 10, 2015
- FURUKAWA ELECTRIC CO., LTD.
- Atsushi Oguri
- G02 - OPTICS
Information Patent Application
OPTICAL AMPLIFIER AND METHOD OF CONTROLLING OPTICAL AMPLIFIER
- Publication number 20140253998
- Publication date Sep 11, 2014
- FURUKAWA ELECTRIC CO., LTD.
- Eisuke OTANI
- G02 - OPTICS
Information Patent Application
OPTICAL SWITCH
- Publication number 20140072302
- Publication date Mar 13, 2014
- FURUKAWA ELECTRIC CO., LTD.
- Masaki IWAMA
- G02 - OPTICS
Information Patent Application
OPTICAL AMPLIFYING APPARATUS
- Publication number 20080205460
- Publication date Aug 28, 2008
- THE FURUKAWA ELECTRIC CO., LTD.
- Takeo OKANIWA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFYING METHOD, OPTICAL AMPLIFYING APPARATUS, AND OPTICA...
- Publication number 20080068700
- Publication date Mar 20, 2008
- The Furukawa Electric CO., LTD
- Ryo Kawahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplifying method, optical amplifying apparatus, and optica...
- Publication number 20040156094
- Publication date Aug 12, 2004
- The Furukawa Electric CO., LTD
- Ryo Kawahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical amplification apparatus and optical transmission system
- Publication number 20020054733
- Publication date May 9, 2002
- THE FURUKAWA ELECTRIC CO., LTD.
- Nobuyuki Kagi
- H01 - BASIC ELECTRIC ELEMENTS

Nobuyuki Kagi

Person

Patents Grantslast 30 patents

Light operation device

Optical amplifier and method of controlling optical amplifier

Optical amplifying apparatus

Optical amplifying method, optical amplifying apparatus, and optica...

Optical amplifying method, optical amplifying apparatus, and optica...

Optical amplification apparatus and optical transmission system

Optical amplifier and optical wavelength division multiplexing comm...

Quartz glass doped with rare earth element and production thereof

Patents Applicationslast 30 patents

LIGHT OPERATION DEVICE

OPTICAL AMPLIFIER AND METHOD OF CONTROLLING OPTICAL AMPLIFIER

OPTICAL SWITCH

OPTICAL AMPLIFYING APPARATUS

OPTICAL AMPLIFYING METHOD, OPTICAL AMPLIFYING APPARATUS, AND OPTICA...

Optical amplifying method, optical amplifying apparatus, and optica...

Optical amplification apparatus and optical transmission system