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Sunnyvale, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Low etch pit density 6 inch semi-insulating gallium arsenide wafers
Patent number
12,084,790
Issue date
Sep 10, 2024
AXT, Inc.
Rajaram Shetty
C30 - CRYSTAL GROWTH
Information
Patent Grant
Low etch pit density, low slip line density, and low strain indium...
Patent number
12,054,851
Issue date
Aug 6, 2024
AXT, Inc.
Morris Young
C30 - CRYSTAL GROWTH
Information
Patent Grant
Low etch pit density 6 inch semi-insulating gallium arsenide wafers
Patent number
11,680,340
Issue date
Jun 20, 2023
AXT, Inc.
Rajaram Shetty
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Low etch pit density, low slip line density, and low strain indium...
Patent number
11,608,569
Issue date
Mar 21, 2023
AXT, Inc.
Morris Young
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Monocrystalline germanium wafers, method for preparing the same, me...
Patent number
11,127,867
Issue date
Sep 21, 2021
Beijing Tongmei Xtal Technology Co., Ltd.
Rajaram Shetty
C30 - CRYSTAL GROWTH
Information
Patent Grant
Germanium ingots/wafers having low micro-pit density (MPD) as well...
Patent number
8,647,433
Issue date
Feb 11, 2014
AXT, Inc.
Weiguo Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Systems, methods and substrates of monocrystalline germanium crysta...
Patent number
8,506,706
Issue date
Aug 13, 2013
AXT, Inc.
Weiguo Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Low etch pit density (EPD) semi-insulating III-V wafers
Patent number
8,361,225
Issue date
Jan 29, 2013
AXT, Inc.
Weiguo Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Crystal growth apparatus and method
Patent number
8,231,727
Issue date
Jul 31, 2012
AXT, Inc.
Weiguo Liu
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Low etch pit density (EPD) semi-insulating GaAs wafers
Patent number
7,566,641
Issue date
Jul 28, 2009
AXT, Inc.
Weiguo Liu
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
LOW ETCH PIT DENSITY 6 INCH SEMI-INSULATING GALLIUM ARSENIDE WAFERS
Publication number
20240426025
Publication date
Dec 26, 2024
AXT, Inc.
Rajaram Shetty
C30 - CRYSTAL GROWTH
Information
Patent Application
LOW ETCH PIT DENSITY, LOW SLIP LINE DENSITY, AND LOW STRAIN INDIUM...
Publication number
20240384436
Publication date
Nov 21, 2024
AXT, Inc.
Morris Young
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD AND SYSTEM FOR VERTICAL GRADIENT FREEZE 8 INCH GALLIUM ARSEN...
Publication number
20230416941
Publication date
Dec 28, 2023
AXT, Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
LOW ETCH PIT DENSITY 6 INCH SEMI-INSULATING GALLIUM ARSENIDE WAFERS
Publication number
20230407522
Publication date
Dec 21, 2023
AXT, Inc.
Rajaram Shetty
C30 - CRYSTAL GROWTH
Information
Patent Application
LOW ETCH PIT DENSITY, LOW SLIP LINE DENSITY, AND LOW STRAIN INDIUM...
Publication number
20230212784
Publication date
Jul 6, 2023
AXT, Inc.
Morris Young
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
METHOD AND SYSTEM FOR VERTICAL GRADIENT FREEZE 8 INCH GALLIUM ARSEN...
Publication number
20220298673
Publication date
Sep 22, 2022
AXT, Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
GERMANIUM SINGLE-CRYSTAL WAFER, METHOD FOR PREPARING GERMANIUM SING...
Publication number
20220238746
Publication date
Jul 28, 2022
BEIJING TONGMEI XTAL TECHNOLOGY CO., LTD.
Rajaram SHETTY
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
LOW ETCH PIT DENSITY, LOW SLIP LINE DENSITY, AND LOW STRAIN INDIUM...
Publication number
20210269939
Publication date
Sep 2, 2021
AXT, Inc.
Morris Young
C30 - CRYSTAL GROWTH
Information
Patent Application
Monocrystalline Germanium Wafers, Method for Preparing the Same, Me...
Publication number
20210175377
Publication date
Jun 10, 2021
BEIJING TONGMEI XTAL TECHNOLOGY CO., LTD.
Rajaram SHETTY
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Low Etch Pit Density Gallium Arsenide Crystals With Boron Dopant
Publication number
20200190697
Publication date
Jun 18, 2020
AXT, Inc.
Rajaram Shetty
C30 - CRYSTAL GROWTH
Information
Patent Application
LOW ETCH PIT DENSITY 6 INCH SEMI-INSULATING GALLIUM ARSENIDE WAFERS
Publication number
20200190696
Publication date
Jun 18, 2020
AXT, Inc.
Rajaram Shetty
C30 - CRYSTAL GROWTH
Information
Patent Application
CRYSTAL GROWTH APPARATUS AND METHOD
Publication number
20120282133
Publication date
Nov 8, 2012
AXT. Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
Low Etch Pit Density (EPD) Semi-Insulating III-V Wafers
Publication number
20110293890
Publication date
Dec 1, 2011
AXT, Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
GERMANIUM INGOTS/WAFERS HAVING LOW MICRO-PIT DENSITY (MPD) AS WELL...
Publication number
20110143091
Publication date
Jun 16, 2011
AXT, Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
LOW ETCH PIT DENSITY (EPD) SEMI-INSULATING III-V WAFERS
Publication number
20110089538
Publication date
Apr 21, 2011
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
Systems, Methods and Substrates of Monocrystalline Germanium Crysta...
Publication number
20100116196
Publication date
May 13, 2010
AXT, Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
Low Etch Pit Density (EPD) Semi-Insulating GaAs Wafers
Publication number
20100001288
Publication date
Jan 7, 2010
AXT, Inc.
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
CRYSTAL GROWTH APPARATUS AND METHOD
Publication number
20090249994
Publication date
Oct 8, 2009
AXT Technology, Inc.
Weiguo LIU
C30 - CRYSTAL GROWTH
Information
Patent Application
Low etch pit density (EPD) semi-insulating GaAs wafers
Publication number
20080280427
Publication date
Nov 13, 2008
Weiguo Liu
C30 - CRYSTAL GROWTH
Information
Patent Application
Apparatus for growing monocrystalline group II-VI and III-V compounds
Publication number
20030172870
Publication date
Sep 18, 2003
AXT, Inc.
Xiao Gordon Liu
C30 - CRYSTAL GROWTH