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:
Dec. 08, 1987
Filed:
Jan. 13, 1986
Applicant:
Inventors:
Roger E Remacle, Lasne, BE;
Alain A Verbeeck, Brussels, BE;
Assignee:
Labofina, S.A., Brussels, BE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210772 ; 210792 ; 210794 ; 210797 ; 210671 ; 134 40 ; 134 251 ;
Abstract
A process for removing sorbed lubricating oil additives from siliceous filter material is provided. The process comprises forming a slurry of the additive-laden siliceous filter material and an aromatic solvent. Water is added to the slurry prior to separating the siliceous filter material from the slurry. The recovered filter material is substantially additive-free. The lubricating oil additives may be optionally recovered from the aromatic solvent by appropriate means such as distillation.