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:
Aug. 11, 2026
Filed:
Dec. 19, 2019
3m Innovative Properties Company, St. Paul, MN (US);
David R. Stein, White Bear Lake, MN (US);
Caroline M. Ylitalo, Stillwater, MN (US);
Craig E. Colton, Stillwater, MN (US);
Steven T. Awiszus, Woodbury, MN (US);
Shane A. Hainey, Cottage Grove, MN (US);
Richard C. Webb, St. Paul, MN (US);
Scott A. Larson, Oakdale, MN (US);
Andrew W. Long, Woodbury, MN (US);
Daniel B. Taylor, White Bear Lake, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A system includes a negative pressure reusable respirator configured to be worn by a worker and to cover at least a mouth and a nose of the worker, a sensor configured to generate sensor data indicative of a characteristic of air within a work environment, and at least one computing device. The negative pressure reusable respirator includes at least one contaminant capture device configured to remove contaminants from air as the air is drawn through the contaminant capture device when the worker inhales. The at least one contaminant capture device is configured to be removable from the negative pressure reusable respirator. The at least one computing device configured to determine whether the at least one contaminant capture device is due for replacement, and perform one or more actions in response to determining the at least one contaminant capture device is due for replacement.