Inventor

Yasushi Iyechika

Inventor

Tsukuba, JP

Overview

1994–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 33 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H10Pprimary

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h1019%

H10HInorganic light-emitting semiconductor devices having potential barriers18%

C23CCoating metallic material11%

C30BSingle-crystal growth11%

H01LSemiconductor devices7%

H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light5%

H10DInorganic electric semiconductor devices5%

G01BMeasuring length, thickness or similar linear dimensions3%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests3%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds2%

PatentTitleYear

11,072,856Vapor phase growth method2021 11,022,428Growth rate detection apparatus, vapor deposition apparatus, and vapor deposition rate detection method2021 10,619,996Vapor phase growth rate measuring apparatus, vapor phase growth apparatus, and growth rate detection method2020 10,488,334Growth-rate measuring apparatus and growth-rate detection method2019 10,351,949Vapor phase growth method2019 10,204,819Vapor phase growth apparatus and ring-shaped holder having a curved mounting surface with convex and concave regions2019 10,151,637Film forming apparatus and thermometry method2018 9,995,632Radiation thermometer and thermometry method2018 9,453,721'Curvature measurement apparatus and method'2016 8,277,893'Chemical vapor deposition apparatus'2012 7,459,326'Method for producing and epitaxial substrate for compound semiconductor light-emitting device'2008 7,205,577'Group 3-5 compound semiconductor and light emitting diode'2007 7,098,484'Epitaxial substrate for compound semiconductor light-emitting device, method for producing the same and light-emitting device'2006 6,946,308'Method of manufacturing III-V group compound semiconductor'2005 6,875,273'Method and system for manufacturing III-V Group compound semiconductor and III-V Group compound semiconductor'2005 6,844,574'III-V compound semiconductor'2005 6,806,502'3-5 Group compound semiconductor and light emitting device'2004 6,756,246'Method for fabricating III-V group compound semiconductor'2004 6,716,724'Method of producing 3-5 group compound semiconductor and semiconductor element'2004 6,617,235'Method of manufacturing Group III-V compound semiconductor'2003 6,503,610'Group III-V compound semiconductor and method of producing the same'2003 6,472,298'Layered group III-V compound semiconductor, method of manufacturing the same and light emitting element'2002 6,388,323'Electrode material and electrode for III-V group compound semiconductor'2002 6,346,720'Layered group III-V compound semiconductor, method of manufacturing the same, and light emitting element'2002 6,225,195'Method for manufacturing group III-V compound semiconductor'2001 6,104,044'Semiconductor compound electrode material containing calcium and a noble metal'2000 6,100,105'Fabrication of InGaAlN based compound semiconductor device'2000 6,023,077'Group III-V compound semiconductor and light-emitting device'2000 5,980,632'Member for use in production device for semiconductors'1999 5,726,457'Organic electroluminescence device'1998 5,708,301'Electrode material and electrode for III-V group compound semiconductor'1998 5,587,014'Method for manufacturing group III-V compound semiconductor crystals'1996 5,317,169'Organic electroluminescence device'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–2008Patents assigned to SUMITOMO CHEMICAL CO (21)· patent assignee history

1994–2007Based in Tsukuba, JP· patent location history

1996–2000Based in Ibaraki, JP· patent location history

2004–2007Patents assigned to SUMITOMO CHEMICAL COMPANY LIMT (2)· patent assignee history

2004–2021Based in Matsudo, JP· patent location history

2012Patents assigned to ISHIHAMA YOSHIYASU (1)· patent assignee history

2012Patents assigned to IYECHIKA YASUSHI (1)· patent assignee history

2012–2021Based in Chiba, JP· patent location history

2016–2021Patents assigned to NUFLARE TECHNOLOGY INC (9)· patent assignee history

2016Based in Yokohama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SUMITOMO CHEMICAL CO	21	1994–2008
NUFLARE TECHNOLOGY INC	9	2016–2021
SUMITOMO CHEMICAL COMPANY LIMT	2	2004–2007
ISHIHAMA YOSHIYASU	1	2012
IYECHIKA YASUSHIself	1	2012

Locations

Location	Patents	Span
Tsukuba, JP	16	1994–2007
Matsudo, JP	8	2004–2021
Chiba, JP	5	2012–2021
Ibaraki, JP	3	1996–2000
Yokohama, JP	1	2016