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:
Jan. 09, 2024
Filed:
Mar. 04, 2019
Applicant:
National Research Council of Canada, Ottawa, CA;
Inventors:
Assignee:
National Research Council of Canada, Ottawa, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 99/00 (2006.01); B01L 3/00 (2006.01);
U.S. Cl.
CPC ...
F16K 99/0025 (2013.01); F16K 99/0015 (2013.01); B01L 3/502738 (2013.01); B01L 2200/12 (2013.01); B01L 2300/123 (2013.01); B01L 2400/0487 (2013.01); B01L 2400/0655 (2013.01); F16K 99/0059 (2013.01); F16K 2099/0074 (2013.01); F16K 2099/0084 (2013.01);
Abstract
In a polymeric microfluidic valve, an adhesion control surface with discrete micro- or nano-scale structured surfaces are separated by fluid filled voids at an interface between an elastomeric membrane seals against a substrate layer. The structured surfaces reduce adhesion between the membrane layer and the substrate layer and prevent permanent bonding, while at the same time providing a good balance of adhesion at the valve seat to provide a sealing engagement. Microstructured adhesion control surfaces on and around valve bodies permit opening the valve, by reducing contact surface area.