P

Inventor

MATSUMOTO KEISUKE

JP66 patents
⚠️ This page may combine multiple inventors who share the name “MATSUMOTO KEISUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MITSUBISHI ELECTRIC CORP

16 patents
US6516017B1Feb 4, 2003

Multiwavelength semiconductor laser device with single modulator and drive method therefor

MITSUBISHI ELECTRIC CORP71 citations96
US5568311AOct 22, 1996

Wavelength tunable semiconductor laser device

MITSUBISHI ELECTRIC CORP91 citations96
US6542525B1Apr 1, 2003

Light modulator and integrated semiconductor laser-light modulator

MITSUBISHI ELECTRIC CORP26 citations93
US5978402ANov 2, 1999

Semiconductor laser device

MITSUBISHI ELECTRIC CORP42 citations93
US7266266B2Sep 4, 2007

Optical functional device based on Mach-Zehnder interferometer

MITSUBISHI ELECTRIC CORP8 citations74
US6277663B1Aug 21, 2001

Method of producing semiconductor laser diode

MITSUBISHI ELECTRIC CORP9 citations74
US6021148AFeb 1, 2000

Semiconductor laser device

MITSUBISHI ELECTRIC CORP8 citations74
US11211768B2Dec 28, 2021

Semiconductor optical integrated device

MITSUBISHI ELECTRIC CORP2 citations69
US7773652B2Aug 10, 2010

Gain-coupled distributed feedback semiconductor laser having an improved diffraction grating

MITSUBISHI ELECTRIC CORP2 citations63
US6606336B2Aug 12, 2003

Photonic semiconductor device

MITSUBISHI ELECTRIC CORP5 citations63
US9042008B2May 26, 2015

Optical semiconductor device

MITSUBISHI ELECTRIC CORP2 citations61
US11342724B2May 24, 2022

Semiconductor optical integrated device

MITSUBISHI ELECTRIC CORP0 citations52
US7365904B2Apr 29, 2008

Optical wavelength converter

MITSUBISHI ELECTRIC CORP1 citations52
US9147997B2Sep 29, 2015

Optical semiconductor device

MITSUBISHI ELECTRIC CORP0 citations51
US11722224B2Aug 8, 2023

Optical semiconductor device

MITSUBISHI ELECTRIC CORP0 citations50
US12489275B2Dec 2, 2025

Method for manufacturing optical semiconductor device

MITSUBISHI ELECTRIC CORP0 citations49

HITACHI LTD

6 patents

MATSUMOTO KEISUKE

5 patents

RENESAS ELECTRONICS CORP

5 patents

FUJI PHOTO FILM CO LTD

4 patents

NISSAN MOTOR

3 patents

YAKULT HONSHA KK

2 patents

ISHIMURA EITARO

2 patents

TAKAYANAGI SHINSUKE

1 patent

KOGANEI LTD

1 patent

MEC CO LTD

1 patent

AISIN SEIKI

1 patent

AISIN CORP

1 patent

TOYOTA MOTOR CO LTD

1 patent

DAIKIN IND LTD

1 patent

Showing the top 50 of 66 patents by PatentIndex Score.