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:
Mar. 01, 1994
Filed:
Jun. 10, 1992
Applicant:
Inventors:
Peter J Degen, Huntington, NY (US);
Colin F Harwood, Glen Cove, NY (US);
Clemens C von Reitzenstein, Baldwin, NY (US);
Stephen A Geibel, Cortland, NY (US);
Raymond T Friel, East Meadow, NY (US);
Assignee:
Pall Corporation, East Hills, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210489 ; 2104971 ; 2104972 ; 55486 ; 55487 ;
Abstract
An element for treating a fluid flowing through the element which comprises at least two filter medium layers helically wrapped around a pervious, hollow tube, with the filter medium layers forming an overall graded pore structure for the fluid treatment element and/or at least one diffusion layer positioned between the filter medium layers.