Membership
Tour
Register
Log in
Meoung-Whan Cho
Follow
Person
Miyagi-ken, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Group III nitride semiconductor and a manufacturing method thereof
Patent number
8,216,869
Issue date
Jul 10, 2012
Dowa Electronics Material Co., Ltd.
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for growth of GaN single crystal, method for preparation of...
Patent number
8,124,504
Issue date
Feb 28, 2012
Tohoku Techno Arch Co., Ltd.
Takafumi Yao
C30 - CRYSTAL GROWTH
Information
Patent Grant
Semiconductor substrate fabrication by etching of a peeling layer
Patent number
8,119,499
Issue date
Feb 21, 2012
Tohoku Techno Arch Co., Ltd.
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Device manufacturing method
Patent number
7,906,409
Issue date
Mar 15, 2011
Canon Kabushiki Kaisha
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Method for growth of GaN single crystal, method for preparation of...
Patent number
7,829,435
Issue date
Nov 9, 2010
Tohoku Techno Arch Co., Ltd.
Takafumi Yao
C30 - CRYSTAL GROWTH
Information
Patent Grant
Manufacture method for ZnO based compound semiconductor crystal and...
Patent number
7,829,207
Issue date
Nov 9, 2010
Stanley Electric Co., Ltd.
Hiroyuki Kato
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Manufacture method for ZnO based compound semiconductor crystal and...
Patent number
7,438,762
Issue date
Oct 21, 2008
Stanley Electric Co., Ltd., Tokyo Denpa Co., Ltd., and Tohoku University
Hiroyuki Kato
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
P-type contact electrode device and light-emitting device
Patent number
6,664,570
Issue date
Dec 16, 2003
NGK Insulators, Ltd.
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
METHOD FOR GROWTH OF GaN SINGLE CRYSTAL, METHOD FOR PREPARATION OF...
Publication number
20100120234
Publication date
May 13, 2010
Takafumi Yao
C30 - CRYSTAL GROWTH
Information
Patent Application
METHOD FOR GROWTH OF GaN SINGLE CRYSTAL, METHOD FOR PREPARATION OF...
Publication number
20100009516
Publication date
Jan 14, 2010
Takafumi Yao
C30 - CRYSTAL GROWTH
Information
Patent Application
DEVICE MANUFACTURING METHOD
Publication number
20090239356
Publication date
Sep 24, 2009
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Group III nitride semiconductor and a manufacturing method thereof
Publication number
20090057835
Publication date
Mar 5, 2009
TOHOKU TECHNO ARCH CO., LTD.
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
MANUFACTURE METHOD FOR ZnO BASED COMPOUND SEMICONDUCTOR CRYSTAL AND...
Publication number
20090045398
Publication date
Feb 19, 2009
Hiroyuki Kato
C30 - CRYSTAL GROWTH
Information
Patent Application
Semiconductor Substrate Fabrication Method
Publication number
20080299746
Publication date
Dec 4, 2008
Takafumi Yao
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Method for Growth of Gan Single Crystal, Method for Preparation of...
Publication number
20080261378
Publication date
Oct 23, 2008
TOHOKU TECHNO ARCH CO., LTD.
Takafumi Yao
C30 - CRYSTAL GROWTH
Information
Patent Application
Manufacture method for ZnO based compound semiconductor crystal and...
Publication number
20070152233
Publication date
Jul 5, 2007
Hiroyuki Kato
C30 - CRYSTAL GROWTH