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:
Dec. 03, 2013
Filed:
Dec. 05, 2008
Dean Michael Willberg, Salt Lake City, UT (US);
James G. Carlson, Lake Elmo, MN (US);
Ignatius A. Kadoma, Cottage Grove, MN (US);
Yong K. Wu, Woodbury, MN (US);
Michael D. Crandall, North Oaks, MN (US);
Dean Michael Willberg, Salt Lake City, UT (US);
James G. Carlson, Lake Elmo, MN (US);
Ignatius A. Kadoma, Cottage Grove, MN (US);
Yong K. Wu, Woodbury, MN (US);
Michael D. Crandall, North Oaks, MN (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
Compositions comprising a proppant core having an outer surface and polymeric microspheres attached to at least a portion of the outer surface are described. The compositions are useful, for example, to increase the productivity of a hydrocarbon oil or gas bearing well.