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. 25, 2012
Filed:
Jan. 18, 2010
Jerald K. Rasmussen, Stillwater, MN (US);
Robert T. Fitzsimons, Jr., Minneapolis, MN (US);
Kannan Seshadri, Woodbury, MN (US);
Simon K. Shannon, Columbia Heights, 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, Columbia Heights, 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 anion exchange resins are described. The macroporous anion exchange resins are in the form of particles such as beads that contain a hydrophilic, crosslinked, (meth)acrylic-type polymeric material. Additionally, methods of purifying a negatively charged material using the macroporous anion exchange resins, methods of making chromatographic columns that contain the macroporous anion exchange resins, methods of making filter elements that contain the macroporous anion exchange resins, and methods of making porous composite materials that contain the macroporous anion exchange resins are described.