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. 12, 1985
Filed:
Feb. 08, 1984
Applicant:
Inventor:
Richard H O'Blasny, Natchitoches, LA (US);
Assignee:
Delta Central Refining, Inc., Natchitoches, LA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ; C10M / ;
U.S. Cl.
CPC ...
208179 ; 208184 ; 208348 ; 2082 / ;
Abstract
Used oil is rerefined utilizing borohydride reducing agents. The borohydride reducing agent contacts the used oil in an aqueous solution, for example. Contact with the borohydride reducing agent may occur before, during or after distillation or evaporation of the used oil. The disclosed method reduces the concentration of carbonyl compounds and metals and reduces the corrosion characteristics of used oil.