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. 04, 2014
Filed:
Feb. 18, 2009
Applicants:
Colin Weaver, Pleasanton, CA (US);
Martin Joseph Crnkovich, Walnut Creek, CA (US);
Michael Emmanuel Kotsos, Walnut Creek, CA (US);
John Marion Frazer, Concord, CA (US);
Inventors:
Colin Weaver, Pleasanton, CA (US);
Martin Joseph Crnkovich, Walnut Creek, CA (US);
Michael Emmanuel Kotsos, Walnut Creek, CA (US);
John Marion Frazer, Concord, CA (US);
Assignee:
Fresenius Medical Care Holdings, Inc., Waltham, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 11/00 (2006.01); B01D 35/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vent assembly is described for use in an extracorporeal fluid unit. A vent structure adjacent to a micro-porous membrane forms the assembly. The vent structure is porous and changes color when the vent structure becomes wet, thereby providing a visual indication that the vent structure has been exposed to liquid.