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Beijing, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Docbase management system and method for extending docbase manageme...
Patent number
8,732,216
Issue date
May 20, 2014
Sursen Corp.
Xu Guo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Embedding and detecting hidden information
Patent number
8,538,068
Issue date
Sep 17, 2013
Sursen Corp.
Donglin Wang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for storing document data in docbase managemen...
Patent number
8,423,521
Issue date
Apr 16, 2013
Sursen Corp.
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method for query based on layout information
Patent number
8,386,943
Issue date
Feb 26, 2013
Sursen Corp.
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Method and apparatus for implementing electronic seal
Patent number
8,386,793
Issue date
Feb 26, 2013
Sursen Corp.
Donglin Wang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Embedding and detecting hidden information
Patent number
8,311,265
Issue date
Nov 13, 2012
Beijing Sursen International Information Tech Co.
Donglin Wang
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Patents Applications
last 30 patents
Information
Patent Application
Embedding and Detecting Hidden Information
Publication number
20130028466
Publication date
Jan 31, 2013
SURSEN CORP.
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method for query based on layout information
Publication number
20100287187
Publication date
Nov 11, 2010
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and apparatus for storing document data in docbase managemen...
Publication number
20100146005
Publication date
Jun 10, 2010
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Method and apparatus for implementing electronic seal
Publication number
20100082994
Publication date
Apr 1, 2010
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Docbase management system and method for extending docbase manageme...
Publication number
20090187604
Publication date
Jul 23, 2009
Xu Guo
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
EMBEDDING AND DETECTING HIDDEN INFORMATION
Publication number
20080310672
Publication date
Dec 18, 2008
Donglin Wang
G06 - COMPUTING CALCULATING COUNTING