Inventor
HASHIMOTO TADAO
US71 patents
⚠️ This page may combine multiple inventors who share the name “HASHIMOTO TADAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIXPOINT MAT INC
16 patentsUS9790617B2Oct 17, 2017
Group III nitride bulk crystals and their fabrication method
SIXPOINT MAT INC6 citations84
US9441311B2Sep 13, 2016
Growth reactor for gallium-nitride crystals using ammonia and hydrogen chloride
SIXPOINT MAT INC7 citations84
US9543393B2Jan 10, 2017
Group III nitride wafer and its production method
SIXPOINT MAT INC5 citations83
US9518340B2Dec 13, 2016
Method of growing group III nitride crystals
SIXPOINT MAT INC9 citations83
US10024809B2Jul 17, 2018
Group III nitride wafers and fabrication method and testing method
SIXPOINT MAT INC2 citations73
US9822465B2Nov 21, 2017
Method of fabricating group III nitride with gradually degraded crystal structure
SIXPOINT MAT INC3 citations73
US9670594B2Jun 6, 2017
Group III nitride crystals, their fabrication method, and method of fabricating bulk group III nitride crystals in supercritical ammonia
SIXPOINT MAT INC2 citations73
US10287709B2May 14, 2019
Seed crystal for growth of gallium nitride bulk crystal in supercritical ammonia and fabrication method
SIXPOINT MAT INC3 citations71
US10242868B1Mar 26, 2019
Seed crystal for growth of gallium nitride bulk crystal in supercritical ammonia and fabrication method
SIXPOINT MAT INC3 citations71
US9909230B2Mar 6, 2018
Seed selection and growth methods for reduced-crack group III nitride bulk crystals
SIXPOINT MAT INC4 citations71
US11767609B2Sep 26, 2023
Low-dislocation bulk GaN crystal and method of fabricating same
SIXPOINT MAT INC0 citations63
US10141435B2Nov 27, 2018
Electronic device using group III nitride semiconductor and its fabrication method
SIXPOINT MAT INC1 citations63
US10134883B2Nov 20, 2018
Electronic device using group III nitride semiconductor and its fabrication method
SIXPOINT MAT INC1 citations63
US10134884B2Nov 20, 2018
Electronic device using group III nitride semiconductor and its fabrication method
SIXPOINT MAT INC1 citations63
US9685327B2Jun 20, 2017
Electronic device using group III nitride semiconductor and its fabrication method and an epitaxial multi-layer wafer for making it
SIXPOINT MAT INC1 citations63
US9466481B2Oct 11, 2016
Electronic device and epitaxial multilayer wafer of group III nitride semiconductor having specified dislocation density, oxygen/electron concentration, and active layer thickness
SIXPOINT MAT INC2 citations63
SIXPOINT MATERIALS INC
9 patentsUS8357243B2Jan 22, 2013
Method for testing group III-nitride wafers and group III-nitride wafers with test data
SIXPOINT MATERIALS INC15 citations92
US9305772B2Apr 5, 2016
Electronic device using group III nitride semiconductor having specified dislocation density, oxygen/electron concentration, and active layer thickness
SIXPOINT MATERIALS INC7 citations84
US8585822B2Nov 19, 2013
Method for testing group III-nitride wafers and group III-nitride wafers with test data
SIXPOINT MATERIALS INC7 citations84
US8557043B2Oct 15, 2013
Method for testing group III-nitride wafers and group III-nitride wafers with test data
SIXPOINT MATERIALS INC7 citations84
US9255342B2Feb 9, 2016
Bismuth-doped semi-insulating group III nitride wafer and its production method
SIXPOINT MATERIALS INC5 citations83
US9202872B2Dec 1, 2015
Method of growing group III nitride crystals
SIXPOINT MATERIALS INC8 citations83
US8921231B2Dec 30, 2014
Group III nitride wafer and its production method
SIXPOINT MATERIALS INC7 citations83
US9349592B2May 24, 2016
Method for making electronic device using group III nitride semiconductor having specified dislocation density oxygen/electron concentration, and active layer thickness
SIXPOINT MATERIALS INC3 citations73
US9224817B2Dec 29, 2015
Composite substrate of gallium nitride and metal oxide
SIXPOINT MATERIALS INC2 citations63
HASHIMOTO TADAO
8 patentsUS8420041B2Apr 16, 2013
High-pressure vessel for growing group III nitride crystals and method of growing group III nitride crystals using high-pressure vessel and group III nitride crystal
HASHIMOTO TADAO17 citations92
US8236267B2Aug 7, 2012
High-pressure vessel for growing group III nitride crystals and method of growing group III nitride crystals using high-pressure vessel and group III nitride crystal
HASHIMOTO TADAO19 citations92
US8764903B2Jul 1, 2014
Growth reactor for gallium-nitride crystals using ammonia and hydrogen chloride
HASHIMOTO TADAO7 citations84
US9452495B1Sep 27, 2016
Laser slicer of crystal ingots and a method of slicing gallium nitride ingots using a laser slicer
HASHIMOTO TADAO11 citations83
US9803293B2Oct 31, 2017
Method for producing group III-nitride wafers and group III-nitride wafers
HASHIMOTO TADAO2 citations73
US9243344B2Jan 26, 2016
Gallium nitride bulk crystals and their growth method
HASHIMOTO TADAO4 citations73
US8920762B2Dec 30, 2014
Synthesis method of transition metal nitride and transition metal nitride
HASHIMOTO TADAO4 citations73
US8253221B2Aug 28, 2012
Gallium nitride bulk crystals and their growth method
HASHIMOTO TADAO4 citations63
NEC CORP
6 patentsUS5323446AJun 21, 1994
Digital cellular switching system with means for securing uninterrupted data transparency during handoffs
NEC CORP60 citations96
US5550992AAug 27, 1996
Transmission timing control in a base station for cellular TDMA mobile communication by receiving an up-link signal for a different base station
NEC CORP49 citations93
US5255308AOct 19, 1993
Wide area cordless telephone system capable of receiving incoming group address calls
NEC CORP36 citations92
US5442684AAug 15, 1995
Method and arrangement of locating cordless units in wide area cordless telephone system
NEC CORP20 citations88
US6405063B1Jun 11, 2002
Communication method of cordless telephone that can always make call as necessary and suppress unnecessary waiting operation to reduce consumption power and cordless telephone
NEC CORP4 citations63
US5689504ANov 18, 1997
Mobile radio communication system and channel control method therefor
NEC CORP4 citations63
MATSUSHITA ELECTRONICS CORP
2 patentsMATSUSHITA ELECTRIC INDUSTRIAL CO LTD
2 patentsUNIV CALIFORNIA
2 patentsUS7755172B2Jul 13, 2010
Opto-electronic and electronic devices using N-face or M-plane GaN substrate prepared with ammonothermal growth
UNIV CALIFORNIA8 citations84
US7803344B2Sep 28, 2010
Method for growing group III-nitride crystals in a mixture of supercritical ammonia and nitrogen, and group III-nitride crystals grown thereby
UNIV CALIFORNIA5 citations63
LETTS EDWARD
2 patentsFUJI ELECTRIC CO LTD
1 patentNIPPON TELEGRAPH & TELEPHONE
1 patentIZUME MASAYUKI
1 patentShowing the top 50 of 71 patents by PatentIndex Score.