Inventor
YOSHIDA JUNJI
JP88 patents
⚠️ This page may combine multiple inventors who share the name “YOSHIDA JUNJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FURUKAWA ELECTRIC CO LTD
31 patentsUS6782028B2Aug 24, 2004
Semiconductor laser device for use in a semiconductor laser module and an optical amplifier
FURUKAWA ELECTRIC CO LTD24 citations92
US6614822B2Sep 2, 2003
Semiconductor laser devices, and semiconductor laser modules and optical communication systems using the same
FURUKAWA ELECTRIC CO LTD22 citations92
US7199919B2Apr 3, 2007
Tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling tunable Raman pumps, and Raman amplifiers
FURUKAWA ELECTRIC CO LTD14 citations84
US6822982B2Nov 23, 2004
Device and method for providing a tunable semiconductor laser
FURUKAWA ELECTRIC CO LTD14 citations84
US10020638B2Jul 10, 2018
Optical semiconductor device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD11 citations83
US9601905B2Mar 21, 2017
Optical semiconductor device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD11 citations83
US9083150B2Jul 14, 2015
Optical semiconductor device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD10 citations83
US6845117B2Jan 18, 2005
Semiconductor laser device, semiconductor laser module, and optical fiber amplifier using the device or module
FURUKAWA ELECTRIC CO LTD16 citations83
US6765935B2Jul 20, 2004
Semiconductor laser module, manufacturing method thereof and optical amplifier
FURUKAWA ELECTRIC CO LTD14 citations83
US6901095B2May 31, 2005
Semiconductor laser module, optical measuring method and optical measuring apparatus
FURUKAWA ELECTRIC CO LTD12 citations81
US6798798B2Sep 28, 2004
Semiconductor laser apparatus and fabrication method of same, and semiconductor laser module
FURUKAWA ELECTRIC CO LTD7 citations74
US6750478B2Jun 15, 2004
Semiconductor laser device and method for suppressing fabry perot oscillations
FURUKAWA ELECTRIC CO LTD10 citations74
US6643308B2Nov 4, 2003
Semiconductor laser device and method for suppressing injection current
FURUKAWA ELECTRIC CO LTD8 citations74
US6614823B2Sep 2, 2003
Semiconductor laser device having a diffraction grating on a light reflection side
FURUKAWA ELECTRIC CO LTD11 citations74
US6567447B1May 20, 2003
Semiconductor laser device and semiconductor laser module using the same
FURUKAWA ELECTRIC CO LTD12 citations74
US7072373B2Jul 4, 2006
Ridge waveguide semiconductor laser diode
FURUKAWA ELECTRIC CO LTD8 citations73
US5973339AOct 26, 1999
Semiconductor photodetector having an optical attenuator
FURUKAWA ELECTRIC CO LTD10 citations73
US12009636B2Jun 11, 2024
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD2 citations72
US11581706B2Feb 14, 2023
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD2 citations72
US10511150B2Dec 17, 2019
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD6 citations72
US6760352B2Jul 6, 2004
Semiconductor laser device with a diffraction grating and semiconductor laser module
FURUKAWA ELECTRIC CO LTD7 citations72
US7072372B2Jul 4, 2006
Semiconductor laser device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD3 citations63
US6947463B2Sep 20, 2005
Semiconductor laser device for use in a laser module
FURUKAWA ELECTRIC CO LTD4 citations63
US6876680B2Apr 5, 2005
Semiconductor laser device, semiconductor laser module, and optical fiber amplifier
FURUKAWA ELECTRIC CO LTD3 citations63
US6829285B2Dec 7, 2004
Semiconductor laser device and method for effectively reducing facet reflectivity
FURUKAWA ELECTRIC CO LTD5 citations63
US6704338B2Mar 9, 2004
Semiconductor laser device, semiconductor laser module, and semiconductor laser control method
FURUKAWA ELECTRIC CO LTD4 citations63
US6680960B2Jan 20, 2004
Semiconductor laser device having a diffraction grating on a light emission side
FURUKAWA ELECTRIC CO LTD6 citations63
US6603785B2Aug 5, 2003
Semiconductor laser device
FURUKAWA ELECTRIC CO LTD6 citations63
US12327983B2Jun 10, 2025
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD0 citations62
US11605935B2Mar 14, 2023
Wavelength-variable laser
FURUKAWA ELECTRIC CO LTD0 citations62
US11322912B2May 3, 2022
Semiconductor laser array, semiconductor laser element, semiconductor laser module, and wavelength-variable laser assembly
FURUKAWA ELECTRIC CO LTD1 citations62
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD
6 patentsUS6711343B1Mar 23, 2004
Data recording/reproducing device, file managing method, file information generating method, file managing method, management information generating device, management information analyzing device, and medium
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD32 citations91
US7246180B1Jul 17, 2007
Connection-confirmable information processing system, connection-confirmable information processing apparatus, information processing method by which connection is conformable, recorder, recording system, recording method, method for recognizing correspondence between node and terminal, computer, terminal, and program recor
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD12 citations84
US7194548B1Mar 20, 2007
Data transmission apparatus, receiving apparatus, and sending apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD16 citations84
US6937599B1Aug 30, 2005
Data source, data conversion device, inverse data conversion device, auxiliary data file generation device, reception method, medium and information aggregate
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD15 citations84
US7058081B2Jun 6, 2006
Transmitting apparatus, transmitting method, source packet generating apparatus, source packet generating method, packet mode determining method, medium and program
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD8 citations74
US6049770AApr 11, 2000
Video and voice signal processing apparatus and sound signal processing apparatus
MATSUSHITA ELECTRIC INDUSTRIAL CO LTD2 citations63
YOSHIDA JUNJI
2 patentsNITTO DENKO CORP
2 patentsPANASONIC CORP
2 patentsNISSAN MOTOR
1 patentHAMAI SHINJI
1 patentTAKATSUJI AYAKO
1 patentOHTA KATSUHISA
1 patentSAMSUNG ELECTRONICS CO LTD
1 patentYAMAMURA TOSHIKI
1 patentTHE FURUKAWA
1 patentShowing the top 50 of 88 patents by PatentIndex Score.