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:
Aug. 20, 2002
Filed:
May. 05, 2000
Applicant:
Inventors:
John Francis, Cleveland, GB;
David Edward Higgins, North Yorkshire, GB;
Assignee:
DuPont Teijin Films U.S. Limited Partner, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 2/718 ; B32B 2/720 ; B32B 2/736 ; B32B 3/130 ;
U.S. Cl.
CPC ...
B32B 2/718 ; B32B 2/720 ; B32B 2/736 ; B32B 3/130 ;
Abstract
A polyester film having an opaque first polyester layer having an optical density greater than 2.0 and a second white polyester layer, wherein the film is made by coextrusion. The opaque first layer preferably contains carbon black. The film is suitable for use as a base for a photographic sheet.