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. 04, 2011
Filed:
Nov. 18, 2005
Herman Beckers, Scherpenheuvel-Zichem, BE;
Willy Doyen, Wommelgem, BE;
Chris Dotremont, Kessel-Lo, BE;
Herman Beckers, Scherpenheuvel-Zichem, BE;
Willy Doyen, Wommelgem, BE;
Chris Dotremont, Kessel-Lo, BE;
Abstract
A process for manufacturing asymmetric braid reinforced capillary ultra- or micro-filtration membranes (), including the subsequent steps of pulling a tubular braid () through a spinneret () and coating the braid with a dope. Prior to the coating step, the braid is impregnated with a non-coagulation liquid, being a liquid which does not cause coagulation of the dope, when brought in contact with the dope. The result is a membrane with an outer skin, i.e. smaller pores near the outside diameter than near the inside diameter, and a coating which is closely arranged around the outside diameter of the braid, without any substantial penetration of the coating into the braid.