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. 04, 2003
Filed:
Jun. 30, 2000
Applicant:
Inventors:
Frank L. Deyak, Stillwater, MN (US);
Neal T. Strand, Woodbury, MN (US);
Ellen O. Aeling, St. Paul, MN (US);
Andrew J. Ouderkirk, Woodbury, MN (US);
Michael F. Weber, Shoreview, MN (US);
David G. Freier, St. Paul, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 2/300 ; B29D 2/200 ; B32B 1/08 ;
U.S. Cl.
CPC ...
B29D 2/300 ; B29D 2/200 ; B32B 1/08 ;
Abstract
A lighted sign housing is provided with a diffuse reflective film that is selected based on its reflectivity and luminance uniformity in order to reduce power consumption required for a given luminance while also increasing luminance uniformity. A method of using such film is also provided.