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. 03, 1993
Filed:
Jun. 28, 1991
Applicant:
Inventor:
Karl-Otto Meyer, Bischofszell, CH;
Assignee:
Filtrox-Werk AG, St. Gallen, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
2104931 ; 210483 ; 210496 ; 21050026 ; 210509 ; 55 97 ;
Abstract
A deep bed filter with a layer thickness of at least 1 mm comprises a pleated, self supporting filter layer (7, 8) which contains a mixture of long fibered material and short fibered material, whereby the fibers comprise cellulose and/or artificial fibers and whereby the filter layer preferably contains diatomaceous earth and/or perlite.