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:
Nov. 23, 2021
Filed:
Sep. 03, 2019
Applicant:
X-flow B.v., Enschede, NL;
Inventors:
Assignee:
X-Flow B.V., Enschede, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 63/06 (2006.01); B29C 53/58 (2006.01); B29C 53/82 (2006.01); B29C 41/20 (2006.01); B29C 65/08 (2006.01); B29K 67/00 (2006.01); B29K 105/04 (2006.01); B29L 31/14 (2006.01);
U.S. Cl.
CPC ...
B01D 63/063 (2013.01); B01D 63/061 (2013.01); B29C 41/20 (2013.01); B29C 53/585 (2013.01); B29C 53/821 (2013.01); B29C 65/08 (2013.01); B29K 2067/00 (2013.01); B29K 2105/04 (2013.01); B29L 2031/14 (2013.01);
Abstract
A tubular membrane comprises a support tube made out of one or more flexible tapes of porous support material which have been helically wound into a tube shape with overlapping tape edges which have been sealed to each other, and a semi-permeable membrane layer made of membrane forming material on an inner wall of the support tube. At least one inwardly projecting helical ridge is provided on said inner wall of the support tube, which helical ridge is covered with or forms part of the membrane layer.