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:
Jul. 22, 2008
Filed:
Dec. 05, 2006
Applicants:
Lars A. Smeenk, St. Paul, MN (US);
Conrad V. Anderson, Minneapolis, MN (US);
Nelson D. Sewall, Forest Lake, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
Inventors:
Lars A. Smeenk, St. Paul, MN (US);
Conrad V. Anderson, Minneapolis, MN (US);
Nelson D. Sewall, Forest Lake, MN (US);
Kenneth L. Smith, White Bear Lake, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23Q 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to methods of making microstructured laminae for replication and apparatus. In a preferred embodiment, the invention relates to machining V-shaped grooves on individual lamina forming cube-corner microstructures.