US Patent 7976068 Double-blind security features

Patent 7976068 was granted and assigned to Document Security Systems, Inc. on July, 2011 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Document Security Systems, Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7976068

Date of Patent

July 12, 2011

Patent Application Number

11741513

Date Filed

April 27, 2007

Patent Primary Examiner

‌

Dana Ross

Patent abstract

A compound security feature is formed by printing latent images together with visually integrated settings using an invisible ink. Even if illuminated by a wavelength capable of rendering the inks visible, the latent images remain visually indistinguishable from their visually integrated settings. However, the latent images and visually integrated settings differ in one or more less obvious ways so that the latent images can be distinguished by using a visual aid.