The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8572049 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 29, 2013

Filed:

Aug. 16, 2004
Applicants:

Daniel Lee Yuk Cheung, Basingstoke, GB;

Bejamin Terrick Staniford, Wallasey, GB;

Inventors:

Daniel Lee Yuk Cheung, Basingstoke, GB;

Bejamin Terrick Staniford, Wallasey, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method, system, computer program and web service for authenticating a document is described comprising; receiving a request to verify the earliest date of a document, such a request including the document itself; creating a signature of the received document by running the document against a checksum algorithm; searching a database for a matching signature to the created signature; and responding to the request with a date associated with a matched signature. The checksum algorithm is an MD5 algorithm and will produce a unique signature for each non-identical set of binary data and no two sets of binary data will render an identical signature. Signatures are created of the objects of a document. Separate signatures are created of the content and the formatting of the document.


Find Patent Forward Citations

Cheung, Daniel Lee Yuk. (2013). Document authentication (U.S. Patent No. 8572049). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8572049

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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