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. 13, 2011
Filed:
Feb. 25, 2011
Brian L. Fall, East Haddam, CT (US);
Thomas J. Hamlin, Vernon, CT (US);
Mahesh Z. Patel, Plantsville, CT (US);
John L. Pulek, Cheshire, CT (US);
Aaron Spearin, Willimantic, CT (US);
Brian L. Fall, East Haddam, CT (US);
Thomas J. Hamlin, Vernon, CT (US);
Mahesh Z. Patel, Plantsville, CT (US);
John L. Pulek, Cheshire, CT (US);
Aaron Spearin, Willimantic, CT (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method of forming a filter element is disclosed comprising the steps of preparing a plurality of upstanding pleats each having first and second pleat legs, wherein the first pleat leg of one pleat is joined to the second pleat leg of a preceding pleat by a medial pleat section; moving the upstanding pleats into an overlapped condition wherein each medial pleat section becomes part of the second leg of a preceding pleat; and forming the overlapped pleats into a cylindrical configuration.