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:
Jan. 20, 1987
Filed:
May. 01, 1985
Applicant:
Inventors:
David L Bergeson, Mendota Heights, MN (US);
Lee A Pavelka, Cottage Grove, MN (US);
Barbara A Mielke, Inver Grove Heights, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; G02B / ;
U.S. Cl.
CPC ...
428168 ; 428325 ; 428172 ; 428910 ; 428913 ; 350102 ; 350103 ; 350105 ;
Abstract
Cellular retroreflective sheeting, which comprises a base sheet of retroreflective elements and a polymeric cover film disposed in space relation from the base sheet by a network of narrow intersecting bonds that form hermetically sealed cells. The cover layer comprises a continuous polymeric phase and discontinuous polymeric phase and is biaxially oriented such that the discontinuous polymeric phase forms minute disks distributed throughout the film.