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:
Nov. 08, 1977
Filed:
Dec. 29, 1976
Applicant:
Inventors:
Angelo Anthony Montagna, Pittsburgh, PA (US);
Allen Evarts Somers, Pittsburgh, PA (US);
Raynor Tyler Sebulsky, Pittsburgh, PA (US);
Assignee:
Gulf Research & Development Company, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 89 ; 208 99 ; 208111 ;
Abstract
Transformer oils having pour points below -40.degree. F. (-40.00.degree. C.) are produced by the process of reducing the nitrogen concentration of a petroleum hydrocarbon feed stock, contacting the denitrogenated product with a catalyst comprising a Group IV-B metal and a Group VIII noble metal on a decationized crystalline mordenite support under pour point reduction conditions of temperature, pressure and space velocity, and thereafter passing the product of the pour point reduction step to a lubricating oil oxidation stability step.