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:
Sep. 14, 1976
Filed:
Dec. 18, 1975
Applicant:
Inventor:
Ronald H Wolk, San Jose, CA (US);
Assignee:
Hydrocarbon Research, Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
208179 ; 2082 / ;
Abstract
Waste lube oil is refined by treating it with hydrogen in an ebullated bed of catalyst particles and subjecting the liquid effluent to vacuum distillation or other equivalent separation procedures to produce a clean and usable lubestock and a heavy residue which contains the sludge and metallic ingredients in the waste lube oil. This process finds its greatest utility in recovering usable lubricant from a waste product.