Chihiro Ohshima

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Optical adding and dropping device and optical transmission apparatus
- Patent number 8,958,695
- Issue date Feb 17, 2015
- Fujitsu Limited
- Hiroki Ooi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplification method and optical amplifier for wavelength division...
- Patent number 7,119,950
- Issue date Oct 10, 2006
- Fujitsu Limited
- Chihiro Ohshima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier
- Patent number 6,496,300
- Issue date Dec 17, 2002
- Fujitsu Limited
- Susumu Kinoshita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus and optical communication system
- Patent number 6,462,861
- Issue date Oct 8, 2002
- Fujitsu Limited
- Chihiro Ohshima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifying apparatus, wide-band optical amplifying apparatu...
- Patent number 6,411,429
- Issue date Jun 25, 2002
- Fujitsu Limited
- Hiroaki Tomofuji
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier for use in optical communications equipment
- Patent number 6,373,623
- Issue date Apr 16, 2002
- Fujitsu Limited
- Chihiro Ohshima
- G02 - OPTICS
Information Patent Grant
Optical amplifier for use in optical communications equipment
- Patent number 6,335,823
- Issue date Jan 1, 2002
- Fujitsu Limited
- Chihiro Ohshima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical amplifier for use in optical communications equipment
- Patent number 6,320,694
- Issue date Nov 20, 2001
- Fujitsu Limited
- Chihiro Ohshima
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL ADDING AND DROPPING DEVICE AND OPTICAL TRANSMISSION APPARATUS
- Publication number 20090220242
- Publication date Sep 3, 2009
- FUJITSU LIMITED
- Hiroki OOI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Amplification method and optical amplifier for wavelength division...
- Publication number 20060023298
- Publication date Feb 2, 2006
- FUJITSU LIMITED
- Chihiro Ohshima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
OPTICAL AMPLIFYING APPARATUS AND OPTICAL COMMUNICATION SYSTEM
- Publication number 20020041431
- Publication date Apr 11, 2002
- FUJITSU LIMITED
- Chihiro Ohshima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL AMPLIFIER
- Publication number 20020027703
- Publication date Mar 7, 2002
- FUJITSU LIMITED
- SUSUMU KINOSHITA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplifier for use in optical communications equipment
- Publication number 20010050805
- Publication date Dec 13, 2001
- Chihiro Ohshima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Optical amplifier for use in optical communications equipment
- Publication number 20010008459
- Publication date Jul 19, 2001
- Chihiro Ohshima
- H01 - BASIC ELECTRIC ELEMENTS

Chihiro Ohshima

Person

Patents Grantslast 30 patents

Optical adding and dropping device and optical transmission apparatus

Amplification method and optical amplifier for wavelength division...

Optical amplifier

Optical amplifying apparatus and optical communication system

Optical amplifying apparatus, wide-band optical amplifying apparatu...

Optical amplifier for use in optical communications equipment

Optical amplifier for use in optical communications equipment

Optical amplifier for use in optical communications equipment

Patents Applicationslast 30 patents

OPTICAL ADDING AND DROPPING DEVICE AND OPTICAL TRANSMISSION APPARATUS

Amplification method and optical amplifier for wavelength division...

OPTICAL AMPLIFYING APPARATUS AND OPTICAL COMMUNICATION SYSTEM

OPTICAL AMPLIFIER

Optical amplifier for use in optical communications equipment

Optical amplifier for use in optical communications equipment