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:
Mar. 03, 2020
Filed:
Dec. 07, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Dean R. Duffy, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Various embodiments of a respirator and a method of making such respirator are disclosed. In one or more embodiments, the respirator includes a mask body and a harness attached to the mask body. The mask body can include an outer cover web, an inner cover web, a filtration layer disposed between the outer cover web and the inner cover web, and a contrast layer disposed between the outer cover web and the inner cover web in a sinus region of the mask body. A portion of the contrast layer can be visible through an outer surface of the outer cover web to form a contrast region of the mask body, where the outer surface of the outer cover web faces away from the filtration layer.