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. 21, 1997
Filed:
Sep. 23, 1994
Applicant:
Inventor:
Roy S Rieber, Houston, TX (US);
Assignee:
Enviroguard, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210769 ; 210777 ;
Abstract
Disclosed is a filter aid or medium and a method of filtering liquid wastes having good filtration, good flow rates through the filter area, and heat value of the resulting filter cake containing the filtered solids of at least 5000 Btu per pound of filter aid. The filter aid comprises rubber particle sizes effective to filter solids of different sizes from the liquid, generally in a size range of from about 5 mesh to 325 mesh, alone or with up to about 70% silicious particles. Preferably a wetting agent is used for the filtration especially for water-based liquids.