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:
Aug. 31, 2021
Filed:
Feb. 14, 2020
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Bruce D. Orensteen, Saint Paul, MN (US);
Kathryn M. Spurgeon, River Falls, WI (US);
Olester Benson, Jr., Woodbury, MN (US);
Joseph V. Crimando, Saint Paul, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/124 (2006.01); B29D 11/00 (2006.01); E01F 9/60 (2016.01); B60Q 1/56 (2006.01); G02B 5/04 (2006.01); G09F 13/16 (2006.01);
U.S. Cl.
CPC ...
G02B 5/124 (2013.01); B29D 11/00605 (2013.01); B29D 11/00788 (2013.01); B60Q 1/56 (2013.01); E01F 9/60 (2016.02); G02B 5/045 (2013.01); G09F 13/16 (2013.01);
Abstract
Retroreflective sheeting having a structured layer of cube corner elements and an at least one optically variable mark therein, and methods of making same.