Inventor

Etsuko Hayashi

Inventor

Kawasaki, JP

Overview

1999–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 46 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Sprimary

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light46%

H04BTransmission41%

G02BOptical elements, systems or apparatus7%

H04JMultiplex communication3%

C03BManufacture, shaping, or supplementary processes1%

C03CChemical composition of glasses, glazes or vitreous enamels1%

PatentTitleYear

8,116,626'Optical transmission apparatus and optical attenuation amount control method'2012 8,064,130'Optical amplifier'2011 8,054,455'Optical amplifier provided with control function of pumping light, and optical transmission system using the same'2011 7,843,631'Gain control apparatus, optical transmission apparatus, gain control method for optical amplifier, and wavelength multiplex optical transmission system'2010 7,813,642'Optical transmission apparatus and method of controlling the same'2010 7,751,119'Optical surge suppressive type optical amplifier'2010 7,729,588'Optical fiber, manufacturing method of the same, and optical amplifier'2010 7,719,758'Optical amplifier provided with control function of pumping light, and optical transmission system using the same'2010 7,715,093'Individual band gain equalizer for optical amplifiers'2010 7,688,498'Optical amplifier and optical monitor circuit'2010 7,616,848'Optical transmission apparatus'2009 7,551,347'Optical amplification characteristics simulation apparatus and optical amplification characteristics simulation method'2009 7,529,022'Raman amplifier and wavelength division multiplexing optical communication system, and method of controlling raman amplification'2009 7,505,197'Optical amplifier provided with control function of pumping light, and optical transmission system using the same'2009 7,417,791'Optical amplifier for amplifying multi-wavelength light'2008 7,400,441'Optical amplifier, optical amplification repeater and pump light supply control method'2008 7,394,589'Optical amplifier for wide band Raman amplification of wavelength division multiplexed (WDM) signal lights'2008 7,362,499'Optical amplifier with pump light source control for Raman amplification'2008 7,359,112'Individual band gain equalizer for optical amplifiers'2008 7,268,936'Optical amplifier having polarization mode dispersion compensation function'2007 7,212,335'Apparatus and method for amplification medium performance simulation, and optical amplifier'2007 7,180,654'Raman amplifier'2007 7,154,664'Apparatus and method for amplification medium performance simulation, and optical amplifier'2006 7,145,718'Control method of optical fiber amplifier and optical transmission system'2006 7,127,139'Optical multiplexing method and optical multiplexer, and optical amplifier using same'2006 7,119,950'Amplification method and optical amplifier for wavelength division multiplexed signal light'2006 7,095,553'Optical amplifier and controlling method for Raman amplifier'2006 7,072,100'Optical amplifier and gain tilt compensation method'2006 7,061,669'Optical apparatus with loss compensation capability and optical amplifier for loss compensation'2006 7,042,636'Optical amplifier with pump light source control for Raman amplification'2006 6,891,662'Optical amplifier and method for amplifying wavelength multiplexed transmission signal light'2005 6,891,661'Optical amplifier with pump light source control for Raman amplification'2005 6,873,455'Optical amplification apparatus utilizing raman amplification and controlling method thereof'2005 6,862,133'Raman amplifier and wavelength division multiplexing optical communication system, and method of controlling raman amplification'2005 6,847,478'Optical amplification apparatus using Raman amplification'2005 6,823,107'Method and device for optical amplification'2004 6,747,790'Optical amplifier for amplifying multi-wavelength light'2004 6,741,390'Variable wavelength light source apparatus and optical amplifier using same'2004 6,738,184'Optical amplifier for amplifying multi-wavelength light'2004 6,683,712'Optical amplification apparatus using Raman amplification'2004 6,624,926'Optical amplifier with pump light source control for raman amplification'2003 6,577,437'Optical amplification apparatus utilizing Raman amplification and controlling method thereof'2003 6,510,000'Optical amplifier for wide band raman amplification of wavelength division multiplexed (WDM) signal lights'2003 6,441,951'Optical amplification apparatus using Raman amplification'2002 6,388,801'Optical amplification apparatus utilizing Raman amplification and controlling method thereof'2002 5,856,882'Optical fibers and optical fiber amplifiers'1999

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1999Patents assigned to HOYA CORP (1)· patent assignee history

1999Based in Tokyo, JP· patent location history

2002–2012Patents assigned to FUJITSU LTD (44)· patent assignee history

2002–2012Based in Kawasaki, JP· patent location history

2003–2008Based in Yamato, JP· patent location history

2011–2012Patents assigned to HAYASHI ETSUKO (2)· patent assignee history

2012Patents assigned to MURO SHINICHIROU (1)· patent assignee history

2012Patents assigned to NAKAJIMA ICHIRO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
FUJITSU LTD	44	2002–2012
HAYASHI ETSUKOself	2	2011–2012
HOYA CORP	1	1999
MURO SHINICHIROU	1	2012
NAKAJIMA ICHIRO	1	2012

Locations

Location	Patents	Span
Kawasaki, JP	38	2002–2012
Yamato, JP	7	2003–2008
Tokyo, JP	1	1999