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:
May. 18, 2004
Filed:
Apr. 16, 2001
Applicant:
Inventors:
James M. Jonza, Woodbury, MN (US);
Lynn E. Lorimor, Minneapolis, MN (US);
Shivshankar Venkataramani, Eagan, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 2/708 ; B32B 2/736 ; B32B 2/732 ; B32B 2/730 ; G02B 5/08 ;
U.S. Cl.
CPC ...
B32B 2/708 ; B32B 2/736 ; B32B 2/732 ; B32B 2/730 ; G02B 5/08 ;
Abstract
A multilayer polymer film has an optical stack including a plurality of alternating polymer layers with skin layers having mechanical, optical, or chemical properties differing from those of the layers in the optical stack. In one embodiment, the multilayer polymeric film has one or more holograms that provide attractive and useful optical effects.