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.:
Date of Patent:
Apr. 07, 1998
Filed:
Sep. 05, 1996
Applicant:
Inventor:
John M Suhan, Blakely, PA (US);
Assignee:
WEA Manufacturing, Inc., Olyphant, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G01J / ;
U.S. Cl.
CPC ...
369110 ; 369 58 ; 369103 ; 356369 ;
Abstract
A technique for verifying the authenticity of a particular breed of pirated optical discs. By comparing the original source disc with the pirated version in the cross-polarization laser light of a polarimeter, the stress of the pirated replication will be revealed, verifying the existence of piracy.