Inventor
TANAKA SHIGEHISA
JP22 patents
⚠️ This page may combine multiple inventors who share the name “TANAKA SHIGEHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
7 patentsUS5724462AMar 3, 1998
Integrated optical semiconductor device and optical gyroscope usinng the same
HITACHI LTD19 citations92
US6635908B2Oct 21, 2003
Burying type avalanche photodiode and fabrication method thereof
HITACHI LTD43 citations91
US5543629AAug 6, 1996
Superlattice avalanche photodiode (APD)
HITACHI LTD30 citations90
US6670600B2Dec 30, 2003
Semiconductor photodetector with ohmic contact areas formed to prevent incident light from resolving the areas, semiconductor photo receiver and semiconductor device installed with the semiconductor photodetector
HITACHI LTD14 citations83
US7223993B2May 29, 2007
Optical semiconductor device
HITACHI LTD2 citations62
US7668217B2Feb 23, 2010
Semiconductor laser diode device
HITACHI LTD0 citations51
US7422919B2Sep 9, 2008
Avalanche photodiode
HITACHI LTD1 citations51
LUMENTUM JAPAN INC
6 patentsUS10921517B2Feb 16, 2021
Electro-optic waveguide device and optical module
LUMENTUM JAPAN INC10 citations85
US10754108B2Aug 25, 2020
Optical subassembly, method for manufacturing optical subassembly, and optical module
LUMENTUM JAPAN INC4 citations73
US10978605B2Apr 13, 2021
Semiconductor photodiode, optical receiver module, optical module, and optical transmission equipment
LUMENTUM JAPAN INC3 citations72
US11476382B2Oct 18, 2022
Semiconductor light-receiving element
LUMENTUM JAPAN INC1 citations62
US12526067B2Jan 13, 2026
Wavelength multiplexing optical transmission system and wavelength multiplexing optical transmitter
LUMENTUM JAPAN INC0 citations52
US11916161B2Feb 27, 2024
Semiconductor light-receiving element
LUMENTUM JAPAN INC0 citations51
OPNEXT JAPAN INC
4 patentsUS6800914B2Oct 5, 2004
Semiconductor photodetector device and manufacturing method thereof
OPNEXT JAPAN INC14 citations83
US7596160B2Sep 29, 2009
Nitride semiconductor lasers and its manufacturing method
OPNEXT JAPAN INC2 citations62
US7364929B2Apr 29, 2008
Nitride semiconductor based light-emitting device and manufacturing method thereof
OPNEXT JAPAN INC2 citations62
US7738521B2Jun 15, 2010
Semiconductor laser device
OPNEXT JAPAN INC0 citations41