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:
Feb. 14, 2006
Filed:
Dec. 02, 2004
Richard C. Allen, Mendota Heights, MN (US);
Arthur L. Kotz, White Bear Lake, MN (US);
Lockwood W. Carlson, Stillwater, MN (US);
Timothy J. Nevitt, Red Wing, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Carl A. Stover, St. Paul, MN (US);
Michael F. Weber, Shoreview, MN (US);
Biswaroop Majumdar, Delmar, NY (US);
Richard C. Allen, Mendota Heights, MN (US);
Arthur L. Kotz, White Bear Lake, MN (US);
Lockwood W. Carlson, Stillwater, MN (US);
Timothy J. Nevitt, Red Wing, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Carl A. Stover, St. Paul, MN (US);
Michael F. Weber, Shoreview, MN (US);
Biswaroop Majumdar, Delmar, NY (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
An optical film is provided which comprises a disperse phase of polymeric particles disposed within a continuous birefringent matrix. The film is oriented, typically by stretching, in one or more directions. The size and shape of the disperse phase particles, the volume fraction of the disperse phase, the film thickness, and the amount of orientation are chosen to attain a desired degree of diffuse reflection and total transmission of electromagnetic radiation of a desired wavelength in the resulting film.