Detection of duplicate document content using two-dimensional visual fingerprinting Grant US-8750624-B2 United States of America 10 Jun 2014
Finding similar content in a mixed collection of presentation and rich document content… Grant US-8554021-B2 United States of America 08 Oct 2013
Detection of duplicate document content using two-dimensional visual fingerprinting Application EP-2444920-A3 European Patent Office 03 Apr 2013
FORENSIC SYSTEM AND FORENSIC METHOD, AND FORENSIC PROGRAM Application EP-2506208-A1 European Patent Office 03 Oct 2012