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:
Oct. 15, 2002
Filed:
Sep. 15, 1998
Applicant:
Inventors:
Eric G. Larson, Lake Elmo, MN (US);
Steven J. Keipert, Oakdale, MN (US);
Alan R. Kirk, Cottage Grove, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B24D 1/102 ; B32B 5/16 ;
U.S. Cl.
CPC ...
B24D 1/102 ; B32B 5/16 ;
Abstract
Seamless backings and seamless coated abrasive articles are provided. The seamless backings and seamless coated abrasive articles have a backing binder formed from a backing binder precursor comprising an aromatic polyisocyanate prepolymer, a polyol curative, an acrylated urethane, and at least one polymerization agent. Also provided is a method for preparing seamless backings and seamless coated abrasive articles.