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. 26, 2002
Filed:
Aug. 16, 1995
Applicant:
Inventors:
Kenneth L. Smith, White Bear Lake, MN (US);
Tzu-Li J. Huang, Woodbury, MN (US);
James C. Coderre, Lake Elmo, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/124 ;
U.S. Cl.
CPC ...
G02B 5/124 ;
Abstract
A retroreflective article has a body portion and a multitude of cube-corner elements that project from a rear side of the body portion . The body portion includes a body layer that contains a light-transmissible polymeric material having an elastic modulus less than 7×10 pascals. The cube-corner elements contain a light transmissible polymeric material having an elastic modulus greater than 16×10 pascals. A retroreflective article of this construction can be highly flexed while maintaining good retroreflective performance.