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:
Nov. 09, 1993
Filed:
Jul. 24, 1990
Applicant:
Inventors:
Frederick G Frangie, Nashua, NH (US);
Roberta R Arbree, Nashua, NH (US);
Assignee:
Nashua Corporation, Nashua, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41M / ;
U.S. Cl.
CPC ...
503206 ; 428 29 ; 503209 ; 503216 ; 503217 ; 503221 ; 503225 ; 503226 ;
Abstract
Disclosed is a method and material for producing and developing thermal latent images. Upon imagewise thermal exposure of a heat sensitive recording material, the recording material selectively yields both a latent image and a visually readable image. The latent image may comprise confidential data or text, and may subsequently be rendered visually readable by an authorized recipient.