Inventor
IYECHIKA YASUSHI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “IYECHIKA YASUSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
21 patentsUS5317169AMay 31, 1994
Organic electroluminescence device
SUMITOMO CHEMICAL CO318 citations99
US5587014ADec 24, 1996
Method for manufacturing group III-V compound semiconductor crystals
SUMITOMO CHEMICAL CO118 citations98
US6503610B2Jan 7, 2003
Group III-V compound semiconductor and method of producing the same
SUMITOMO CHEMICAL CO105 citations97
US5726457AMar 10, 1998
Organic electroluminescence device
SUMITOMO CHEMICAL CO92 citations96
US6346720B1Feb 12, 2002
Layered group III-V compound semiconductor, method of manufacturing the same, and light emitting element
SUMITOMO CHEMICAL CO29 citations92
US6225195B1May 1, 2001
Method for manufacturing group III-V compound semiconductor
SUMITOMO CHEMICAL CO22 citations92
US6023077AFeb 8, 2000
Group III-V compound semiconductor and light-emitting device
SUMITOMO CHEMICAL CO27 citations92
US5708301AJan 13, 1998
Electrode material and electrode for III-V group compound semiconductor
SUMITOMO CHEMICAL CO17 citations92
US7098484B2Aug 29, 2006
Epitaxial substrate for compound semiconductor light-emitting device, method for producing the same and light-emitting device
SUMITOMO CHEMICAL CO13 citations83
US6756246B2Jun 29, 2004
Method for fabricating III-V group compound semiconductor
SUMITOMO CHEMICAL CO14 citations82
US6875273B2Apr 5, 2005
Method and system for manufacturing III-V Group compound semiconductor and III-V Group compound semiconductor
SUMITOMO CHEMICAL CO16 citations81
US6617235B2Sep 9, 2003
Method of manufacturing Group III-V compound semiconductor
SUMITOMO CHEMICAL CO11 citations74
US6472298B2Oct 29, 2002
Layered group III-V compound semiconductor, method of manufacturing the same and light emitting element
SUMITOMO CHEMICAL CO11 citations74
US7459326B2Dec 2, 2008
Method for producing and epitaxial substrate for compound semiconductor light-emitting device
SUMITOMO CHEMICAL CO8 citations73
US6716724B1Apr 6, 2004
Method of producing 3-5 group compound semiconductor and semiconductor element
SUMITOMO CHEMICAL CO10 citations73
US6946308B2Sep 20, 2005
Method of manufacturing III-V group compound semiconductor
SUMITOMO CHEMICAL CO7 citations72
US5980632ANov 9, 1999
Member for use in production device for semiconductors
SUMITOMO CHEMICAL CO12 citations71
US6388323B1May 14, 2002
Electrode material and electrode for III-V group compound semiconductor
SUMITOMO CHEMICAL CO3 citations63
US6844574B1Jan 18, 2005
III-V compound semiconductor
SUMITOMO CHEMICAL CO6 citations62
US6104044AAug 15, 2000
Semiconductor compound electrode material containing calcium and a noble metal
SUMITOMO CHEMICAL CO6 citations62
US6100105AAug 8, 2000
Fabrication of InGaAlN based compound semiconductor device
SUMITOMO CHEMICAL CO3 citations60
NUFLARE TECHNOLOGY INC
11 patentsUS9453721B2Sep 27, 2016
Curvature measurement apparatus and method
NUFLARE TECHNOLOGY INC20 citations92
US11072856B2Jul 27, 2021
Vapor phase growth method
NUFLARE TECHNOLOGY INC1 citations60
US10204819B2Feb 12, 2019
Vapor phase growth apparatus and ring-shaped holder having a curved mounting surface with convex and concave regions
NUFLARE TECHNOLOGY INC1 citations59
US11022428B2Jun 1, 2021
Growth rate detection apparatus, vapor deposition apparatus, and vapor deposition rate detection method
NUFLARE TECHNOLOGY INC0 citations52
US12338543B2Jun 24, 2025
Vapor phase growth method using reflector with changeable pattern
NUFLARE TECHNOLOGY INC0 citations51
US12538756B2Jan 27, 2026
Vapor phase growth apparatus and reflector
NUFLARE TECHNOLOGY INC0 citations50
US10351949B2Jul 16, 2019
Vapor phase growth method
NUFLARE TECHNOLOGY INC0 citations50
US10619996B2Apr 14, 2020
Vapor phase growth rate measuring apparatus, vapor phase growth apparatus, and growth rate detection method
NUFLARE TECHNOLOGY INC0 citations42
US10488334B2Nov 26, 2019
Growth-rate measuring apparatus and growth-rate detection method
NUFLARE TECHNOLOGY INC0 citations42
US10151637B2Dec 11, 2018
Film forming apparatus and thermometry method
NUFLARE TECHNOLOGY INC0 citations41
US9995632B2Jun 12, 2018
Radiation thermometer and thermometry method
NUFLARE TECHNOLOGY INC0 citations41