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:
Aug. 09, 2016
Filed:
Oct. 18, 2010
Applicants:
Richard Brandimarte, Bensalem, PA (US);
Kirit Patel, Bridgewater, NJ (US);
Inventors:
Richard Brandimarte, Bensalem, PA (US);
Kirit Patel, Bridgewater, NJ (US);
Assignee:
Donaldson Company, Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 67/20 (2006.01); B29C 43/02 (2006.01); B01D 71/36 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B29C 43/22 (2006.01); B29C 71/02 (2006.01); C08J 5/22 (2006.01); B29C 43/46 (2006.01); B29K 27/18 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B01D 71/36 (2013.01); B01D 67/0027 (2013.01); B01D 67/0083 (2013.01); B01D 67/0086 (2013.01); B01D 69/02 (2013.01); B29C 43/22 (2013.01); B29C 71/02 (2013.01); C08J 5/2237 (2013.01); B01D 2323/08 (2013.01); B01D 2323/10 (2013.01); B01D 2325/20 (2013.01); B29C 43/46 (2013.01); B29C 2071/027 (2013.01); B29K 2027/18 (2013.01); B29L 2031/755 (2013.01); C08J 2327/18 (2013.01);
Abstract
A method for improving the dimensional stability of PTFE membranes by the application of elevated temperature and elevated pressure to a PTFE membrane. The process reduces and/or eliminates the relaxation stress normally associated with PTFE membranes made using previously existing methods.