Maki Hiraizumi

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Raman amplifier and raman amplifier adjustment method
- Patent number 8,564,876
- Issue date Oct 22, 2013
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier and raman amplifier adjustment method
- Patent number 8,339,698
- Issue date Dec 25, 2012
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier and raman amplifier adjustment method
- Patent number 8,213,078
- Issue date Jul 3, 2012
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Raman amplifier and Raman amplifier adjustment method
- Patent number 7,554,721
- Issue date Jun 30, 2009
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical amplifier and optical amplification method
- Patent number 7,123,404
- Issue date Oct 17, 2006
- Fujitsu Limited
- Shota Mori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical transmission device and optical transmission system
- Patent number 7,058,298
- Issue date Jun 6, 2006
- Fujitsu Limited
- Hideaki Koyano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Method and apparatus which adds distortion to a signal to compensat...
- Patent number 5,939,920
- Issue date Aug 17, 1999
- Fujitsu Limited
- Maki Hiraizumi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Video-on-demand system
- Patent number 5,793,411
- Issue date Aug 11, 1998
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multi-media mailing method and apparatus
- Patent number 5,550,977
- Issue date Aug 27, 1996
- Fujitsu Limited
- Maki Hiraizumi
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
- Publication number 20120307351
- Publication date Dec 6, 2012
- Fujitsu Limited
- Maki Hiraizumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
- Publication number 20110026104
- Publication date Feb 3, 2011
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
- Publication number 20110019268
- Publication date Jan 27, 2011
- Fujitsu Limited
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD
- Publication number 20090153951
- Publication date Jun 18, 2009
- FUJITSU LIMITED
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Raman amplifier and raman amplifier adjustment method
- Publication number 20050024712
- Publication date Feb 3, 2005
- FUJITSU LIMITED
- Maki Hiraizumi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission unit and system
- Publication number 20020105693
- Publication date Aug 8, 2002
- FUJITSU LIMITED
- Masato Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Optical transmission device and optical transmission system
- Publication number 20020097462
- Publication date Jul 25, 2002
- Hideaki Koyano
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Maki Hiraizumi

Person

Patents Grantslast 30 patents

Raman amplifier and raman amplifier adjustment method

Raman amplifier and raman amplifier adjustment method

Raman amplifier and raman amplifier adjustment method

Raman amplifier and Raman amplifier adjustment method

Optical amplifier and optical amplification method

Optical transmission device and optical transmission system

Method and apparatus which adds distortion to a signal to compensat...

Video-on-demand system

Multi-media mailing method and apparatus

Patents Applicationslast 30 patents

RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD

RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD

RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD

RAMAN AMPLIFIER AND RAMAN AMPLIFIER ADJUSTMENT METHOD

Raman amplifier and raman amplifier adjustment method

Optical transmission unit and system

Optical transmission device and optical transmission system