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:
Sep. 15, 2015
Filed:
Jan. 17, 2013
Applicant:
Brita Lp, Oakland, CA (US);
Inventors:
Russell E. Bell, Pleasanton, CA (US);
Allison Jean Fretwell, San Francisco, CA (US);
Gregory Martin Gressel, Hershey, PA (US);
Ronald Alfred Kolberg, Pleasanton, CA (US);
Assignee:
Brita LP, Oakland, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 35/30 (2006.01); C02F 1/00 (2006.01); C02F 1/28 (2006.01);
U.S. Cl.
CPC ...
B01D 35/30 (2013.01); C02F 1/003 (2013.01); B01D 2201/301 (2013.01); C02F 1/283 (2013.01); C02F 2201/006 (2013.01); C02F 2307/04 (2013.01);
Abstract
A gravity flow water filtration cartridge with a novel sieve system. The sieve system comprises an air vent and a shroud. The sieve system is attached or welded onto a housing bottom or barrel. An air permeable material covers the opening of the air vent.