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:
Jan. 08, 2013
Filed:
Jan. 20, 2010
Jerald K. Rasmussen, Stillwater, MN (US);
Robert T. Fitzsimons, Jr., Minneapolis, MN (US);
Kannan Seshadri, Woodbury, MN (US);
Simon K. Shannon, Saint Paul, MN (US);
Peter D. Wickert, St. Paul, MN (US);
James I. Hembre, Plymouth, MN (US);
Jerald K. Rasmussen, Stillwater, MN (US);
Robert T. Fitzsimons, Jr., Minneapolis, MN (US);
Kannan Seshadri, Woodbury, MN (US);
Simon K. Shannon, Saint Paul, MN (US);
Peter D. Wickert, St. Paul, MN (US);
James I. Hembre, Plymouth, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Methods of making macroporous cation exchange resins are described. The macroporous cation exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. The macroporous cation exchange resins are prepared using an inverse suspension polymerization process in the presence of a water soluble, organic, aliphatic porogen having at least three hydroxy groups.