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. 28, 2010
Filed:
Jul. 31, 2006
Seyed A. Angadjivand, Woodbury, MN (US);
Andrew R. Fox, Oakdale, MN (US);
John D. Stelter, St. Joseph Township, WI (US);
Timothy J. Lindquist, Woodbury, MN (US);
John M. Brandner, St. Paul, MN (US);
James E. Springett, Hudson, WI (US);
Seyed A. Angadjivand, Woodbury, MN (US);
Andrew R. Fox, Oakdale, MN (US);
John D. Stelter, St. Joseph Township, WI (US);
Timothy J. Lindquist, Woodbury, MN (US);
John M. Brandner, St. Paul, MN (US);
James E. Springett, Hudson, WI (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A molded respirator is made from a monocomponent monolayer nonwoven web containing a bimodal mass fraction/fiber size mixture of intermingled continuous monocomponent polymeric microfibers and larger size fibers of the same polymeric composition. The respirator is a cup-shaped porous monocomponent monolayer matrix whose matrix fibers are bonded to one another at at least some points of fiber intersection. The matrix has a King Stiffness greater than 1 N. The respirator may be formed without requiring stiffening layers, bicomponent fibers, or other reinforcement in the filter media layer.