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. 13, 2011
Filed:
Jul. 26, 2007
Thomas P. Klun, Lakeland, MN (US);
Zai-ming Qiu, Woodbury, MN (US);
Gerald R. Hofmann, Oakdale, MN (US);
Andrew S. Viner, Roseville, MN (US);
Oscar S. Benz, Minneapolis, MN (US);
Suresh Iyer, Woodbury, MN (US);
Gregory D. Clark, St. Paul, MN (US);
Craig A. Burton, Woodbury, MN (US);
Mark J. Pellerite, Woodbury, MN (US);
Thomas P. Klun, Lakeland, MN (US);
Zai-Ming Qiu, Woodbury, MN (US);
Gerald R. Hofmann, Oakdale, MN (US);
Andrew S. Viner, Roseville, MN (US);
Oscar S. Benz, Minneapolis, MN (US);
Suresh Iyer, Woodbury, MN (US);
Gregory D. Clark, St. Paul, MN (US);
Craig A. Burton, Woodbury, MN (US);
Mark J. Pellerite, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A personal safety protective device that includes a lens and a support structure onto which the lens is secured. The lens includes a substrate and a hard-coat layer located on the substrate of the lens. The hard-coat layer has a low surface energy outer surface that is derived from a) an additive that includes at least one of i) a perfluoropolyether urethane that includes hydrolysable silane groups, and ii) an acrylate polymer that includes at least one perfluoropolyether moiety and at least one hydrolysable silane group, and b) a silsesquioxane-based hard-coat composition. The provision of such a lens on a personal safety protective device enables the lens to be durable to abrasion and to be easily cleaned without use of solvents that could shorten the service life of the lens.