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:
Aug. 30, 1977
Filed:
Jun. 04, 1976
Applicant:
Inventors:
Rene Avrillon, Maisons Laffitte, FR;
Daniel Defives, Paris, FR;
Assignee:
Institut Francais du Petrole, Rueil-Maimaison, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
208180 ; 208181 ; 208184 ;
Abstract
Used lubricating oil is contacted with particles of a solid adsorption resin comprising at least 0.1 cc per gram of pores of diameter in the range of 6 to 300 angstroms. The resin is preferably a porous polycondensate or cross-linked copolymer comprising pyridyl or hydroxy groups, for example a polycondensate of phenol and formaldehyde. The resin may be reactivated by rinsing with an organic solvent such as an alcohol, a ketone or a chlorinated hydrocarbon.
Avrillon, Rene. (1977). Process for regenerating lubricating oils (U.S. Patent No. 4045330). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4045330
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile