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:
Sep. 17, 2013
Filed:
Apr. 15, 2010
William D. Coggio, Hudson, WI (US);
John S. Huizinga, White Bear Lake, MN (US);
Michael L. Steiner, New Richmond, WI (US);
Robert F. Watkins, White Bear Lake, MN (US);
Encai Hao, Woodbury, MN (US);
William B. Kolb, West Lakeland, MN (US);
Peiwang Zhu, Woodbury, MN (US);
Michael Benton Free, St. Paul, MN (US);
Brant U. Kolb, Afton, MN (US);
Kui Chen-ho, Woodbury, MN (US);
Paul E. Humpal, Stillwater, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
Scott M. Tapio, Falcon Heights, MN (US);
William D. Coggio, Hudson, WI (US);
John S. Huizinga, White Bear Lake, MN (US);
Michael L. Steiner, New Richmond, WI (US);
Robert F. Watkins, White Bear Lake, MN (US);
Encai Hao, Woodbury, MN (US);
William B. Kolb, West Lakeland, MN (US);
Peiwang Zhu, Woodbury, MN (US);
Michael Benton Free, St. Paul, MN (US);
Brant U. Kolb, Afton, MN (US);
Kui Chen-Ho, Woodbury, MN (US);
Paul E. Humpal, Stillwater, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
Scott M. Tapio, Falcon Heights, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.