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. 17, 2020
Filed:
Jan. 25, 2019
Applicant:
Philter Labs, Inc., Encinitas, CA (US);
Inventors:
Yuval Shenkal, Cardiff, CA (US);
John Grimm, Santee, CA (US);
Assignee:
Philter Labs, Inc., San Diego, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
A24F 7/04 (2006.01); A24F 47/00 (2020.01); A24F 3/00 (2006.01); A24F 13/00 (2006.01); B01D 39/16 (2006.01); B01D 53/02 (2006.01); B01D 46/00 (2006.01); B01D 46/24 (2006.01); A61L 9/014 (2006.01); B01D 53/04 (2006.01);
U.S. Cl.
CPC ...
A24F 7/04 (2013.01); A24F 3/00 (2013.01); A24F 13/00 (2013.01); A24F 47/008 (2013.01); A61L 9/014 (2013.01); B01D 39/1692 (2013.01); B01D 46/003 (2013.01); B01D 46/0036 (2013.01); B01D 46/0038 (2013.01); B01D 46/2411 (2013.01); B01D 53/02 (2013.01); B01D 53/0407 (2013.01); A61L 2209/13 (2013.01); B01D 2239/045 (2013.01); B01D 2253/102 (2013.01); B01D 2257/80 (2013.01); B01D 2257/90 (2013.01); B01D 2259/4541 (2013.01);
Abstract
The present disclosure provides, in one embodiment, a filter device comprising a mouthpiece, a filter assembly in communication with the mouthpiece for filtering air exhaled into the mouthpiece, and an outlet check valve which permits air to be exhaled through the mouthpiece into the filter assembly, and substantially prohibits air from being inhaled from the filter assembly into the mouthpiece.