P

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 patents
US6782028B2Aug 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 patents

YOSHIDA JUNJI

2 patents

NITTO DENKO CORP

2 patents

PANASONIC CORP

2 patents

NISSAN MOTOR

1 patent

HAMAI SHINJI

1 patent

TAKATSUJI AYAKO

1 patent

OHTA KATSUHISA

1 patent

SAMSUNG ELECTRONICS CO LTD

1 patent

YAMAMURA TOSHIKI

1 patent

THE FURUKAWA

1 patent

Showing the top 50 of 88 patents by PatentIndex Score.