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:
Jun. 14, 2016
Filed:
Nov. 02, 2011
Satishkumar Chamyvelumani, Wallingford, CT (US);
Thomas L. Wood, Hudson, WI (US);
Keith D. Solomon, Cheshire, CT (US);
Edward M. Czausz, Meriden, CT (US);
Aleksander Medved, Shoreview, MN (US);
Satishkumar Chamyvelumani, Wallingford, CT (US);
Thomas L. Wood, Hudson, WI (US);
Keith D. Solomon, Cheshire, CT (US);
Edward M. Czausz, Meriden, CT (US);
Aleksander Medved, Shoreview, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method of forming a filter element is disclosed comprising introducing a mixture into a feeder, the mixture comprising a plurality of susceptor particles and a plurality of polymeric binder particles. The mixture is advanced through the feeder and into a die comprising an excitation portion where eddy currents are induced in the susceptor particles by subjecting the mixture to a high-frequency electromagnetic field, the eddy currents being sufficient to elevate the temperature of the susceptor particles to cause adjacent polymeric binder particles to be heated to at least a softening point. The susceptor particles bind with the heated polymeric binder particles in the die to form a coherent mass. The coherent mass is advanced out of the die and cooled to form the filter element.