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:
Feb. 06, 2018
Filed:
Mar. 13, 2013
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventor:
Przemyslaw P. Markowicz, Woodbury, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K 26/24 (2014.01); B21D 31/00 (2006.01); B21D 37/00 (2006.01); B29C 59/00 (2006.01); B23K 26/26 (2014.01); B29D 11/00 (2006.01); B23K 26/04 (2014.01); B23K 26/14 (2014.01); B29C 59/04 (2006.01); G02B 5/08 (2006.01); B23K 101/20 (2006.01); B23K 103/10 (2006.01); B23K 103/12 (2006.01); B29L 11/00 (2006.01);
U.S. Cl.
CPC ...
B29C 59/002 (2013.01); B23K 26/04 (2013.01); B23K 26/14 (2013.01); B23K 26/26 (2013.01); B29C 59/04 (2013.01); B29D 11/00605 (2013.01); G02B 5/0808 (2013.01); B23K 2201/20 (2013.01); B23K 2203/10 (2013.01); B23K 2203/12 (2013.01); B29L 2011/0083 (2013.01); Y10T 428/24355 (2015.01);
Abstract
A tool for making retroreflective articles comprises (a) a substrate comprising a patterned surface comprising an array of microstructured retroreflective elements and (b) a welding seam through at least a portion of the array. An optically degraded area adjacent the welding seam on the patterned surface has a width of about 400 μm or less.