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. 13, 2022
Filed:
Apr. 07, 2020
Applicant:
Global Life Sciences Solutions Usa Llc, Marlborough, MA (US);
Inventors:
William A Hennessy, Schenectady, NY (US);
Douglas Albagli, Clifton Park, NY (US);
Assignee:
GLOBAL LIFE SCIENCES SOLUTIONS USA, LLC, Marlborough, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 71/64 (2006.01); B01D 67/00 (2006.01); G03F 7/00 (2006.01); B01D 69/06 (2006.01); B01D 69/10 (2006.01);
U.S. Cl.
CPC ...
B01D 71/64 (2013.01); B01D 67/0034 (2013.01); G03F 7/00 (2013.01); B01D 69/06 (2013.01); B01D 69/10 (2013.01); B01D 2325/02 (2013.01); B01D 2325/08 (2013.01);
Abstract
Porous membranes are provided according to the invention having desirable coefficient of thermal expansion and large surface area, for example at least about 4,000 mm. These porous membranes may be made according to an exemplary process employing lithographic patterning of a photoresist followed by development of the photoresist and etching. In one aspect, the etch barrier layer is chosen from a material that does not react with or incorporate metal or other contaminants into the membrane layer.