Inventor
YAMAGUCHI TAKEHARU
JP18 patents
⚠️ This page may combine multiple inventors who share the name “YAMAGUCHI TAKEHARU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FURUKAWA ELECTRIC CO LTD
12 patentsUS6545296B1Apr 8, 2003
Semiconductor light emitting device
FURUKAWA ELECTRIC CO LTD30 citations92
US6524016B1Feb 25, 2003
Semiconductor laser module
FURUKAWA ELECTRIC CO LTD18 citations83
US6683902B1Jan 27, 2004
Semiconductor laser module
FURUKAWA ELECTRIC CO LTD9 citations73
US5973339AOct 26, 1999
Semiconductor photodetector having an optical attenuator
FURUKAWA ELECTRIC CO LTD10 citations73
US6911713B2Jun 28, 2005
Optical device having a carrier-depleted layer
FURUKAWA ELECTRIC CO LTD9 citations71
US6738405B1May 18, 2004
Semiconductor laser
FURUKAWA ELECTRIC CO LTD3 citations62
US6115116ASep 5, 2000
Waveguide-type variable-sensitivity semiconductor photodetector
FURUKAWA ELECTRIC CO LTD3 citations62
US6532107B2Mar 11, 2003
Optical amplifier, light source module and optical system
FURUKAWA ELECTRIC CO LTD3 citations61
US5929461AJul 27, 1999
Optical semiconductor device having a semiconductor laminate mirror
FURUKAWA ELECTRIC CO LTD4 citations61
US6821798B2Nov 23, 2004
Semiconductor optical device and method for fabricating same
FURUKAWA ELECTRIC CO LTD6 citations58
US9722406B2Aug 1, 2017
Undersea cable, undersea cable installation structure, and method for installing undersea cable
FURUKAWA ELECTRIC CO LTD1 citations50
US6810063B1Oct 26, 2004
Semiconductor laser device
FURUKAWA ELECTRIC CO LTD0 citations41
FURUNO ELECTRIC CO
4 patentsUS9541645B2Jan 10, 2017
Detecting device, fish finder and detecting method
FURUNO ELECTRIC CO10 citations83
US7443081B2Oct 28, 2008
Multi-frequency transmission/reception apparatus
FURUNO ELECTRIC CO4 citations53
US9857467B2Jan 2, 2018
Detection device
FURUNO ELECTRIC CO0 citations51
US9310483B2Apr 12, 2016
Device and method for transceiving ultrasonic wave
FURUNO ELECTRIC CO0 citations33