P

Inventor

HATA MASAHIKO

JP48 patents
⚠️ This page may combine multiple inventors who share the name “HATA MASAHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

SUMITOMO CHEMICAL CO

20 patents
US5603764AFeb 18, 1997

Process for crystal growth of III-V group compound semiconductor

SUMITOMO CHEMICAL CO54 citations94
US5332451AJul 26, 1994

Epitaxially grown compound-semiconductor crystal

SUMITOMO CHEMICAL CO21 citations92
US7956366B2Jun 7, 2011

Monolithic light emitting device and driving method therefor

SUMITOMO CHEMICAL CO15 citations81
US6569693B2May 27, 2003

Method for fabricating epitaxial substrate

SUMITOMO CHEMICAL CO18 citations80
US5569954AOct 29, 1996

Epitaxial Inx Ga.sub.(1-x) As having a slanted crystallographic plane azimuth

SUMITOMO CHEMICAL CO8 citations72
US4976216ADec 11, 1990

Apparatus for vapor-phase growth

SUMITOMO CHEMICAL CO14 citations71
US6864159B2Mar 8, 2005

Method for fabricating III-V compound semiconductor

SUMITOMO CHEMICAL CO2 citations63
US8350292B2Jan 8, 2013

Gallium nitride epitaxial crystal, method for production thereof, and field effect transistor

SUMITOMO CHEMICAL CO2 citations61
US5982024ANov 9, 1999

High concentration doped semiconductor

SUMITOMO CHEMICAL CO5 citations61
US5441913AAug 15, 1995

Process of making a semiconductor epitaxial substrate

SUMITOMO CHEMICAL CO3 citations61
US5064778ANov 12, 1991

Vapor-phase epitaxial growth method

SUMITOMO CHEMICAL CO2 citations58
US8022440B2Sep 20, 2011

Compound semiconductor epitaxial substrate and manufacturing method thereof

SUMITOMO CHEMICAL CO0 citations52
US7923752B2Apr 12, 2011

Thin-film crystal wafer having pn junction and method for fabricating the wafer

SUMITOMO CHEMICAL CO0 citations52
US8901605B2Dec 2, 2014

Semiconductor wafer, semiconductor device, and method of producing semiconductor wafer

SUMITOMO CHEMICAL CO0 citations51
US8901656B2Dec 2, 2014

Semiconductor wafer, field-effect transistor, method of producing semiconductor wafer, and method of producing field-effect transistor

SUMITOMO CHEMICAL CO1 citations51
US7595259B2Sep 29, 2009

Method for manufacturing compound semiconductor substrate with pn junction

SUMITOMO CHEMICAL CO0 citations51
US9184240B2Nov 10, 2015

Method of producing semiconductor wafer, and semiconductor wafer

SUMITOMO CHEMICAL CO1 citations50
US7951685B2May 31, 2011

Method for manufacturing semiconductor epitaxial crystal substrate

SUMITOMO CHEMICAL CO1 citations50
US9117658B2Aug 25, 2015

Method of producing semiconductor wafer, semiconductor wafer, method of producing semiconductor device and semiconductor device

SUMITOMO CHEMICAL CO1 citations49
US6191014B1Feb 20, 2001

Method for manufacturing compound semiconductor

SUMITOMO CHEMICAL CO0 citations45

HATA MASAHIKO

9 patents

TAKADA TOMOYUKI

5 patents

YAMANAKA SADANORI

3 patents

ADVANTEST CORP

2 patents

KOHIRO KENJI

2 patents

YOSHIDA KOGYO KK

2 patents

TAKENAKA MITSURU

1 patent

NAKANO TSUYOSHI

1 patent

YAMADA HISASHI

1 patent

FUKUHARA NOBORU

1 patent

YAMABAYASHI TOSHIHARU

1 patent