Liu; Ningsheng

Patent Applications and Registrations

Patent applications and USPTO patent grants for Liu; Ningsheng.The latest application filed is for "embedding and detecting hidden information".

Company Profile

0.11.6

Liu; Ningsheng - Beijing CN

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Docbase management system and method for extending docbase management system and functions Grant 8,732,216 - Guo , et al. May 20, 2	2014-05-20
Embedding and detecting hidden information Grant 8,538,068 - Wang , et al. September 17, 2	2013-09-17
Method and apparatus for storing document data in docbase management system Grant 8,423,521 - Wang , et al. April 16, 2	2013-04-16
Method for query based on layout information Grant 8,386,943 - Wang , et al. February 26, 2	2013-02-26
Method and apparatus for implementing electronic seal Grant 8,386,793 - Wang , et al. February 26, 2	2013-02-26
Embedding and Detecting Hidden Information App 20130028466 - Wang; Donglin ; et al.	2013-01-31
Embedding and detecting hidden information Grant 8,311,265 - Wang , et al. November 13, 2	2012-11-13
Method for query based on layout information App 20100287187 - Wang; Donglin ; et al.	2010-11-11
Method and apparatus for storing document data in docbase management system App 20100146005 - Wang; Donglin ; et al.	2010-06-10
Method and apparatus for implementing electronic seal App 20100082994 - Wang; Donglin ; et al.	2010-04-01
Docbase management system and method for extending docbase management system and functions App 20090187604 - Guo; Xu ; et al.	2009-07-23
Embedding And Detecting Hidden Information App 20080310672 - Wang; Donglin ; et al.	2008-12-18

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