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. 09, 2002
Filed:
Aug. 13, 1997
Applicant:
Inventors:
Laurence R. Gilbert, St. Paul, MN (US);
James M. Jonza, St. Paul, MN (US);
Andrew J. Ouderkirk, St. Paul, MN (US);
Carl A. Stover, St. Paul, MN (US);
Michael F. Weber, St. Paul, MN (US);
William W. Merrill, St. Paul, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/00 ; B32B 7/02 ; B32B 2/708 ; B32B 2/736 ;
U.S. Cl.
CPC ...
B32B 7/00 ; B32B 7/02 ; B32B 2/708 ; B32B 2/736 ;
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, wherein the refractive indices in the in-plane direction n and n , and the refractive index in the thickness direction n for each layer are all selected to obtain optical effects such as reflection, transmission, and/or polarization.