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:
Nov. 26, 2013
Filed:
Aug. 21, 2009
Kenton D. Budd, Woodbury, MN (US);
Matthew H. Frey, Cottage Grove, MN (US);
Craig W. Lindsay, Minneapolis, MN (US);
Kenton D. Budd, Woodbury, MN (US);
Matthew H. Frey, Cottage Grove, MN (US);
Craig W. Lindsay, Minneapolis, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Presently described are retroreflective articles, such as pavement markings, that comprise transparent microspheres partially embedded in a binder (e.g., polymeric). Also described are microspheres (e.g., glass-ceramic), methods of making microspheres, as well as compositions of glass materials and compositions of glass-ceramic materials. The microspheres generally comprise lanthanide series oxide(s), titanium oxide (TiO), and optionally zirconium oxide (ZrO).