P

Inventor

YAMAGUCHI MASAYUKI

JP85 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGUCHI MASAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NEC CORP

19 patents
US6031851AFeb 29, 2000

Mode-locked semiconductor laser and method of driving the same

NEC CORP82 citations96
US5953359ASep 14, 1999

Laser diode array and fabrication method thereof

NEC CORP65 citations96
US5825047AOct 20, 1998

Optical semiconductor device

NEC CORP119 citations96
US4719636AJan 12, 1988

Wavelength tunable semiconductor laser device provided with control regions

NEC CORP61 citations96
US4796273AJan 3, 1989

Distributed feedback semiconductor laser

NEC CORP51 citations93
US4759023AJul 19, 1988

Monolithically integrated semiconductor optical device and method of fabricating same

NEC CORP45 citations93
US4704720ANov 3, 1987

Distributed-feedback semiconductor laser

NEC CORP45 citations93
US5541945AJul 30, 1996

Wavelength-tunable semiconductor laser

NEC CORP23 citations92
US5392303AFeb 21, 1995

Frequency stabilization method of semiconductor laser, frequency-stabilized light source and laser module

NEC CORP47 citations92
US4751710AJun 14, 1988

Semiconductor laser device

NEC CORP40 citations92
US6456111B1Sep 24, 2002

Receiver circuit for a complementary signal

NEC CORP11 citations74
US5936992AAug 10, 1999

Method for selecting a semiconductor integrated optical modulator/laser light source device

NEC CORP5 citations74
US5789274AAug 4, 1998

Wavelength-tunable semiconductor laser and fabrication process thereof

NEC CORP15 citations74
US5732097AMar 24, 1998

Modulating circuit for semiconductor optical modulator

NEC CORP12 citations74
US5604827AFeb 18, 1997

Method for selecting a semiconductor integrated optical modulator/laser light source device

NEC CORP11 citations74
US5284791AFeb 8, 1994

Method of making tunable semiconductor laser

NEC CORP16 citations74
US4835788AMay 30, 1989

Distributed feedback semiconductor laser

NEC CORP8 citations74
US4751719AJun 14, 1988

Distributed feedback semiconductor laser device

NEC CORP18 citations74
US6330266B1Dec 11, 2001

Method for selecting a semiconductor integrated optical modulator/laser light source device

NEC CORP3 citations63

TS TECH CO LTD

5 patents

TOSOH CORP

4 patents

NIPPON STEEL CORP

3 patents

SEIKO EPSON CORP

2 patents

NEC ELECTRONICS CORP

2 patents

DENSO CORP

2 patents

MATSUMOTO TOMOKI

1 patent

ADACHI TAKAMASA

1 patent

HONDA MOTOR CO LTD

1 patent

FUJI OIL CO LTD

1 patent

YAMAGUCHI MASAYUKI

1 patent

NAKAZONO DAISUKE

1 patent

SHARP KK

1 patent

KIMOTO KK

1 patent

LEI SHAWMIN

1 patent

MATSUSHITA ELECTRONICS CORP

1 patent

DAINIPPON SCREEN MFG

1 patent

NIPPON DENSO CO

1 patent

SHENZHEN TOREY MICROELECTRONIC TECH CO LTD

1 patent

Showing the top 50 of 85 patents by PatentIndex Score.