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. 27, 2002
Filed:
Jan. 25, 2000
Applicant:
Inventors:
Jerome Ditter, Santa Ana, CA (US);
Richard A. Morris, Encinitas, CA (US);
Robert Zepf, San Diego, CA (US);
Assignee:
Pall Corporation, East Hills, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 2/900 ;
U.S. Cl.
CPC ...
B01D 2/900 ;
Abstract
Highly asymmetric polymeric membranes with large pores which yield bubble points in the range of 0.5 to 25 psid and superior flow characteristics. The membranes can be cast from both metastable dispersions and from homogenous casting formulations. The technique of synthesis involves exposure of the cast membrane to humid air to create large surface pores on the exposed side.