Inventor
KASUKAWA AKIHIKO
JP42 patents
⚠️ This page may combine multiple inventors who share the name “KASUKAWA AKIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FURUKAWA ELECTRIC CO LTD
37 patentsUS5757833AMay 26, 1998
Semiconductor laser having a transparent light emitting section, and a process of producing the same
FURUKAWA ELECTRIC CO LTD76 citations96
US6545296B1Apr 8, 2003
Semiconductor light emitting device
FURUKAWA ELECTRIC CO LTD30 citations92
US6396861B1May 28, 2002
N-type modulation-doped multi quantum well semiconductor laser device
FURUKAWA ELECTRIC CO LTD34 citations92
US6281523B1Aug 28, 2001
Semiconductor optical waveguide
FURUKAWA ELECTRIC CO LTD24 citations92
US5929462AJul 27, 1999
Semiconductor optical device having a strained quantum well structure
FURUKAWA ELECTRIC CO LTD37 citations92
US5497389AMar 5, 1996
Semiconductor laser device having an active layer and a resonator having a single reflector or pair of reflectors
FURUKAWA ELECTRIC CO LTD25 citations92
US5325385AJun 28, 1994
Buried-type semiconductor laser device
FURUKAWA ELECTRIC CO LTD23 citations92
US6580740B2Jun 17, 2003
Semiconductor laser device having selective absorption qualities
FURUKAWA ELECTRIC CO LTD41 citations91
US6731663B1May 4, 2004
Ridge waveguide type semiconductor laser device
FURUKAWA ELECTRIC CO LTD18 citations83
US6704342B1Mar 9, 2004
Gain-coupled distributed-feedback semiconductor laser device
FURUKAWA ELECTRIC CO LTD7 citations74
US6674783B1Jan 6, 2004
Distributed feedback type semiconductor laser device and method of manufacturing the same
FURUKAWA ELECTRIC CO LTD7 citations74
US6643315B2Nov 4, 2003
Distributed feedback semiconductor laser device and multi-wavelength laser array
FURUKAWA ELECTRIC CO LTD8 citations74
US6603138B2Aug 5, 2003
Quantum-confinement stark effect optical modulator
FURUKAWA ELECTRIC CO LTD9 citations74
US5953358ASep 14, 1999
Semiconductor laser device
FURUKAWA ELECTRIC CO LTD14 citations74
US5854090ADec 29, 1998
Method of manufacturing wafer bonded semiconductor laser device
FURUKAWA ELECTRIC CO LTD15 citations74
US7072373B2Jul 4, 2006
Ridge waveguide semiconductor laser diode
FURUKAWA ELECTRIC CO LTD8 citations73
US7061954B2Jun 13, 2006
Semiconductor optical waveguide structure
FURUKAWA ELECTRIC CO LTD7 citations73
US6618417B2Sep 9, 2003
Ridge waveguide semiconductor laser diode
FURUKAWA ELECTRIC CO LTD8 citations73
US6472691B2Oct 29, 2002
Distributed feedback semiconductor laser device
FURUKAWA ELECTRIC CO LTD12 citations73
US6278139B1Aug 21, 2001
Semiconductor light-emitting diode
FURUKAWA ELECTRIC CO LTD8 citations73
US5914977AJun 22, 1999
Semiconductor laser having a high-reflectivity reflector on the laser facets thereof, an optical integrated device provided with the semiconductor laser, and a manufacturing method therefor
FURUKAWA ELECTRIC CO LTD14 citations73
US5666375ASep 9, 1997
Semiconductor quantum well laser having a low threshold current density
FURUKAWA ELECTRIC CO LTD12 citations73
US6911713B2Jun 28, 2005
Optical device having a carrier-depleted layer
FURUKAWA ELECTRIC CO LTD9 citations71
US6737290B2May 18, 2004
Surface-emitting semiconductor laser device and method for fabricating the same, and surface-emitting semiconductor laser array employing the laser device
FURUKAWA ELECTRIC CO LTD4 citations62
US6738405B1May 18, 2004
Semiconductor laser
FURUKAWA ELECTRIC CO LTD3 citations62
US6560260B1May 6, 2003
Ridge waveguide semiconductor laser diode
FURUKAWA ELECTRIC CO LTD4 citations62
US6528337B1Mar 4, 2003
Process of producing semiconductor layer structure
FURUKAWA ELECTRIC CO LTD5 citations62
US5390208AFeb 14, 1995
Strained quantum well type semiconductor laser device
FURUKAWA ELECTRIC CO LTD5 citations62
US7453100B2Nov 18, 2008
DFB laser assembly and laser module
FURUKAWA ELECTRIC CO LTD3 citations61
US6829277B2Dec 7, 2004
Distributed feedback semiconductor laser device and laser module
FURUKAWA ELECTRIC CO LTD3 citations61
US6782022B2Aug 24, 2004
Semiconductor laser device having improved output power characteristics
FURUKAWA ELECTRIC CO LTD4 citations61
US6661828B2Dec 9, 2003
Semiconductor laser device
FURUKAWA ELECTRIC CO LTD3 citations61
US5327445AJul 5, 1994
Quantum-well type semiconductor laser device
FURUKAWA ELECTRIC CO LTD5 citations61
US8385379B2Feb 26, 2013
Optical semiconductor device and pumping light source for optical fiber amplifier
FURUKAWA ELECTRIC CO LTD2 citations58
US9960572B2May 1, 2018
Semiconductor device
FURUKAWA ELECTRIC CO LTD0 citations48
US6810063B1Oct 26, 2004
Semiconductor laser device
FURUKAWA ELECTRIC CO LTD0 citations41
US6690701B2Feb 10, 2004
Semiconductor laser device
FURUKAWA ELECTRIC CO LTD0 citations41