Inventor
IKEDA MASAO
JP70 patents
⚠️ This page may combine multiple inventors who share the name “IKEDA MASAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
32 patentsUS6111277AAug 29, 2000
Semiconductor device as well as light emitting semiconductor device
SONY CORP122 citations99
US6501154B2Dec 31, 2002
Semiconductor substrate made of a nitride III-V compound semiconductor having a wurtzite-structured crystal structure
SONY CORP79 citations98
US7119487B2Oct 10, 2006
Semiconductor light emitting device with stacked light emitting elements
SONY CORP49 citations96
US6312967B1Nov 6, 2001
Semiconductor device and manufacture method thereof, as well as light emitting semiconductor device
SONY CORP46 citations96
US5993542ANov 30, 1999
Method for growing nitride III-V compound semiconductor layers and method for fabricating a nitride III-V compound semiconductor substrate
SONY CORP85 citations96
US6956322B2Oct 18, 2005
Semiconductor light emitting device with stacked light emitting elements
SONY CORP34 citations93
US6870193B2Mar 22, 2005
Semiconductor light emitting device and its manufacturing method
SONY CORP22 citations92
US6509579B2Jan 21, 2003
Semiconductor device
SONY CORP45 citations92
US7528540B2May 5, 2009
Light emitting device and optical device using the same
SONY CORP11 citations84
US6991952B2Jan 31, 2006
Method of manufacturing semiconductor device
SONY CORP17 citations84
US6603147B1Aug 5, 2003
Semiconductor light emitting device
SONY CORP16 citations84
US6836498B2Dec 28, 2004
Semiconductor laser, semiconductor device and nitride series III-V group compound substrate, as well as manufacturing method thereof
SONY CORP14 citations83
US4740977AApr 26, 1988
Semiconductor laser device
SONY CORP20 citations82
US7964419B2Jun 21, 2011
Semiconductor light emitting device, its manufacturing method, semiconductor device and its manufacturing method
SONY CORP4 citations74
US7339195B2Mar 4, 2008
Semiconductor light emitting device, its manufacturing method, semiconductor device and its manufacturing method
SONY CORP6 citations74
US6577662B1Jun 10, 2003
Semiconductor laser, and manufacturing method thereof, semiconductor device and manufacturing method thereof
SONY CORP9 citations74
US5989339ANov 23, 1999
MBE system and semiconductor device fabricated, using same
SONY CORP7 citations74
US5780322AJul 14, 1998
Method for growing a II-VI compound semiconductor layer containing cadmium and method for fabricating a semiconductor laser
SONY CORP15 citations74
US5695556ADec 9, 1997
Determination of critical film thickness of a compound semiconductor layer, and a method for manufacturing a semiconductor device using the method of determination
SONY CORP9 citations74
US5633514AMay 27, 1997
Semiconductor light emitting device with lattice-matching and lattice-mismatching
SONY CORP7 citations74
US7149235B2Dec 12, 2006
Multi-beam semiconductor laser device
SONY CORP9 citations73
US5481558AJan 2, 1996
Light emitting device
SONY CORP8 citations73
US5943355AAug 24, 1999
Semiconductor light emitting device
SONY CORP7 citations72
US5471067ANov 28, 1995
Semiconductor metal contacting structure and a light emitting device
SONY CORP14 citations70
US7439546B2Oct 21, 2008
Semiconductor light emitting device, its manufacturing method, semiconductor device and its manufacturing method
SONY CORP1 citations63
US7125732B2Oct 24, 2006
Semiconductor light emitting device and its manufacturing method
SONY CORP2 citations63
US5872023AFeb 16, 1999
Method of fabricating of light emitting device with controlled lattice mismatch
SONY CORP4 citations63
US5865897AFeb 2, 1999
Method of producing film of nitrogen-doped II-VI group compound semiconductor
SONY CORP4 citations63
US6950451B2Sep 27, 2005
Multi-beam semiconductor laser element
SONY CORP4 citations62
US6471769B2Oct 29, 2002
Method of manufacturing a nitride series III-V group compound semiconductor
SONY CORP6 citations62
US5234842AAug 10, 1993
Method of producing p-typed CdS
SONY CORP5 citations62
US7372080B2May 13, 2008
Gan semiconductor device
SONY CORP4 citations61
SUMITOMO ELECTRIC INDUSTRIES
4 patentsUS7786488B2Aug 31, 2010
Nitride semiconductor wafer and method of processing nitride semiconductor wafer
SUMITOMO ELECTRIC INDUSTRIES12 citations92
US6875082B2Apr 5, 2005
Nitride semiconductor wafer and method of processing nitride semiconductor wafer
SUMITOMO ELECTRIC INDUSTRIES32 citations92
US7535082B2May 19, 2009
Nitride semiconductor wafer and method of processing nitride semiconductor wafer
SUMITOMO ELECTRIC INDUSTRIES11 citations84
US8008165B2Aug 30, 2011
Nitride semiconductor wafer and method of processing nitride semiconductor wafer
SUMITOMO ELECTRIC INDUSTRIES6 citations74
SUMITOMO BAKELITE CO
3 patentsAJINOMOTO KK
2 patentsKURAMOTO MASARU
1 patentSEIKISUI CHEMICAL CO LTD
1 patentIKEDA MASAO
1 patentHAYASHIBARA BIOCHEM LAB
1 patentSUZUKI YUTAKA
1 patentNIHON IYAKUHIN KOGYO CO LTD
1 patentOKI TOMOYUKI
1 patentOOTA MAKOTO
1 patentYOKOYAMA HIROYUKI
1 patentShowing the top 50 of 70 patents by PatentIndex Score.