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Edward Letts
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Buellton, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Seed crystal for growth of gallium nitride bulk crystal in supercri...
Patent number
10,354,863
Issue date
Jul 16, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Method of growing group III nitride crystals
Patent number
10,316,431
Issue date
Jun 11, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Seed crystal for growth of gallium nitride bulk crystal in supercri...
Patent number
10,287,709
Issue date
May 14, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Seed crystal for growth of gallium nitride bulk crystal in supercri...
Patent number
10,242,868
Issue date
Mar 26, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Group III nitride bulk crystals and their fabrication method
Patent number
10,161,059
Issue date
Dec 25, 2018
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
High-pressure vessel for growing group III nitride crystals and met...
Patent number
10,087,548
Issue date
Oct 2, 2018
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Methods for producing improved crystallinity group III-nitride crys...
Patent number
9,985,102
Issue date
May 29, 2018
Sixpoint Materials, Inc.
Edward Letts
C30 - CRYSTAL GROWTH
Information
Patent Grant
Seed selection and growth methods for reduced-crack group III nitri...
Patent number
9,909,230
Issue date
Mar 6, 2018
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Group III nitride bulk crystals and fabrication method
Patent number
9,834,863
Issue date
Dec 5, 2017
SixPoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Method for producing group III-nitride wafers and group III-nitride...
Patent number
9,803,293
Issue date
Oct 31, 2017
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Group III nitride bulk crystals and their fabrication method
Patent number
9,790,617
Issue date
Oct 17, 2017
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Group III nitride wafer and its production method
Patent number
9,543,393
Issue date
Jan 10, 2017
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Method of growing group III nitride crystals
Patent number
9,518,340
Issue date
Dec 13, 2016
SixPoint Materials, Inc.
Tadao Hashimoto
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Growth reactor for gallium-nitride crystals using ammonia and hydro...
Patent number
9,441,311
Issue date
Sep 13, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Bismuth-doped semi-insulating group III nitride wafer and its produ...
Patent number
9,435,051
Issue date
Sep 6, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
B24 - GRINDING POLISHING
Information
Patent Grant
Bismuth-doped semi-insulating group III nitride wafer and its produ...
Patent number
9,255,342
Issue date
Feb 9, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Method of growing group III nitride crystals
Patent number
9,202,872
Issue date
Dec 1, 2015
Sixpoint Materials, Inc.
Tadao Hashimoto
B28 - WORKING CEMENT, CLAY, OR STONE
Information
Patent Grant
Group III nitride wafer and its production method
Patent number
8,921,231
Issue date
Dec 30, 2014
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Grant
Methods for producing GaN nutrient for ammonothermal growth
Patent number
8,852,341
Issue date
Oct 7, 2014
Sixpoint Materials, Inc.
Edward Letts
C01 - INORGANIC CHEMISTRY
Information
Patent Grant
Growth reactor for gallium-nitride crystals using ammonia and hydro...
Patent number
8,764,903
Issue date
Jul 1, 2014
Sixpoint Materials, Inc.
Tadao Hashimoto
C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information
Patent Grant
Methods for producing improved crystallinity group III-nitride crys...
Patent number
8,728,234
Issue date
May 20, 2014
Sixpoint Materials, Inc.
Edward Letts
C30 - CRYSTAL GROWTH
Information
Patent Grant
Method for testing group III-nitride wafers and group III-nitride w...
Patent number
8,585,822
Issue date
Nov 19, 2013
Sixpoint Materials, Inc.
Tadao Hashimoto
G01 - MEASURING TESTING
Information
Patent Grant
Method for testing group III-nitride wafers and group III-nitride w...
Patent number
8,557,043
Issue date
Oct 15, 2013
Sixpoint Materials, Inc.
Tadao Hashimoto
G01 - MEASURING TESTING
Information
Patent Grant
High-pressure vessel for growing group III nitride crystals and met...
Patent number
8,420,041
Issue date
Apr 16, 2013
Sixpoint Materials, Inc.
Tadao Hashimoto
B32 - LAYERED PRODUCTS
Information
Patent Grant
Method for testing group III-nitride wafers and group III-nitride w...
Patent number
8,357,243
Issue date
Jan 22, 2013
Sixpoint Materials, Inc.
Tadao Hashimoto
G01 - MEASURING TESTING
Information
Patent Grant
High-pressure vessel for growing group III nitride crystals and met...
Patent number
8,236,267
Issue date
Aug 7, 2012
Sixpoint Materials, Inc.
Tadao Hashimoto
B32 - LAYERED PRODUCTS
Patents Applications
last 30 patents
Information
Patent Application
SEED CRYSTAL FOR GROWTH OF GALLIUM NITRIDE BULK CRYSTAL IN SUPERCRI...
Publication number
20190093256
Publication date
Mar 28, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
SEED CRYSTAL FOR GROWTH OF GALLIUM NITRIDE BULK CRYSTAL IN SUPERCRI...
Publication number
20190091807
Publication date
Mar 28, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
SEED CRYSTAL FOR GROWTH OF GALLIUM NITRIDE BULK CRYSTAL IN SUPERCRI...
Publication number
20190096667
Publication date
Mar 28, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SEED CRYSTAL FOR GROWTH OF GALLIUM NITRIDE BULK CRYSTAL IN SUPERCRI...
Publication number
20190096668
Publication date
Mar 28, 2019
Sixpoint Materials, Inc.
Tadao Hashimoto
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHODS FOR PRODUCING IMPROVED CRYSTALLINITY GROUP III-NITRIDE CRYS...
Publication number
20170198407
Publication date
Jul 13, 2017
Sixpoint Materials, Inc.
Edward LETTS
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR PRODUCING GROUP III NITRIDE WAFERS AND GROUP III NITRIDE...
Publication number
20170175295
Publication date
Jun 22, 2017
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
SEED SELECTION AND GROWTH METHODS FOR REDUCED-CRACK GROUP III NITRI...
Publication number
20160215410
Publication date
Jul 28, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
BISMUTH-DOPED SEMI-INSULATING GROUP III NITRIDE WAFER AND ITS PRODU...
Publication number
20160130720
Publication date
May 12, 2016
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD OF GROWING GROUP III NITRIDE CRYSTALS
Publication number
20160040318
Publication date
Feb 11, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD OF GROWING GROUP III NITRIDE CRYSTALS USING HIGH PRESSURE VE...
Publication number
20160010238
Publication date
Jan 14, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
HIGH-PRESSURE VESSEL FOR GROWING GROUP III NITRIDE CRYSTALS AND MET...
Publication number
20160002817
Publication date
Jan 7, 2016
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
GROUP III NITRIDE BULK CRYSTALS AND THEIR FABRICATION METHOD
Publication number
20150340444
Publication date
Nov 26, 2015
Sixpoint Materials, Inc.
Tadao HASHIMOTO
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
GROUP III NITRIDE BULK CRYSTALS AND THEIR FABRICATION METHOD
Publication number
20150337453
Publication date
Nov 26, 2015
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
GROUP III NITRIDE BULK CRYSTALS AND THEIR FABRICATION METHOD
Publication number
20150337457
Publication date
Nov 26, 2015
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
GROUP III NITRIDE BULK CRYSTALS AND FABRICATION METHOD
Publication number
20150203991
Publication date
Jul 23, 2015
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
GROWTH REACTOR FOR GALLIUM-NITRIDE CRYSTALS USING AMMONIA AND HYDRO...
Publication number
20150075421
Publication date
Mar 19, 2015
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
REACTOR DESIGN FOR GROWING GROUP III NITRIDE CRYSTALS AND METHOD OF...
Publication number
20140326175
Publication date
Nov 6, 2014
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
METHODS FOR PRODUCING IMPROVED CRYSTALLINITY GROUP III-NITRIDE CRYS...
Publication number
20140209925
Publication date
Jul 31, 2014
Sixpoint Materials, Inc.
Edward LETTS
C30 - CRYSTAL GROWTH
Information
Patent Application
METHODS FOR PRODUCING IMPROVED CRYSTALLINITY GROUP III-NITRIDE CRYS...
Publication number
20140174340
Publication date
Jun 26, 2014
Sixpoint Materials, Inc.
Edward LETTS
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD OF GROWING GROUP III NITRIDE CRYSTALS
Publication number
20140087113
Publication date
Mar 27, 2014
SEOUL SEMICONDUCTOR CO., LTD.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD OF GROWING GROUP III NITRIDE CRYSTALS
Publication number
20140087209
Publication date
Mar 27, 2014
SEOUL SEMICONDUCTOR CO., LTD.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
GROUP III NITRIDE WAFER AND ITS PRODUCTION METHOD
Publication number
20140065796
Publication date
Mar 6, 2014
SEOUL SEMICONDUCTOR CO., LTD.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
GROUP III NITRIDE WAFER AND ITS PRODUCTION METHOD
Publication number
20140061662
Publication date
Mar 6, 2014
SEOUL SEMICONDUCTOR CO., LTD.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
BISMUTH-DOPED SEMI-INSULATING GROUP III NITRIDE WAFER AND ITS PRODU...
Publication number
20140054589
Publication date
Feb 27, 2014
SEOUL SEMICONDUCTOR CO., LTD.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
HIGH-PRESSURE VESSEL FOR GROWING GROUP III NITRIDE CRYSTALS AND MET...
Publication number
20130216845
Publication date
Aug 22, 2013
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
HIGH-PRESSURE VESSEL FOR GROWING GROUP III NITRIDE CRYSTALS AND MET...
Publication number
20130206057
Publication date
Aug 15, 2013
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR TESTING GROUP III-NITRIDE WAFERS AND GROUP III-NITRIDE W...
Publication number
20130135005
Publication date
May 30, 2013
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR TESTING GROUP III-NITRIDE WAFERS AND GROUP III-NITRIDE W...
Publication number
20130119399
Publication date
May 16, 2013
Sixpoint Materials, Inc.
Tadao Hashimoto
C30 - CRYSTAL GROWTH
Information
Patent Application
HIGH-PRESSURE VESSEL FOR GROWING GROUP III NITRIDE CRYSTALS AND MET...
Publication number
20120304917
Publication date
Dec 6, 2012
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH
Information
Patent Application
GROWTH REACTOR FOR GALLIUM-NITRIDE CRYSTALS USING AMMONIA AND HYDRO...
Publication number
20100285657
Publication date
Nov 11, 2010
Sixpoint Materials, Inc.
Tadao HASHIMOTO
C30 - CRYSTAL GROWTH