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. 10, 1993
Filed:
Mar. 25, 1992
Applicant:
Inventors:
Billy J Etienne, Newark, DE (US);
Gene W Lou, Newark, DE (US);
Kenneth R Heath, Port Deposit, MD (US);
Assignees:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
L'Air Liquide S.A., Paris Cedex, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
21032161 ; 21050023 ;
Abstract
A high strength and low weight hollow fiber membrane tubesheet can be achieved by incorporating with the potting material a loading of a nominally spherical filler. The microsphere filler is preferably nonsmooth, hollow and nonporous and may be treated with a surface modifier agent. Other advantages are also obtained including improved machineability with more open, nonsmeared and nondistorted hollow fibers.