03990963 is referenced by 22 patents and cites 1 patents.

Used lubricating oils are first heated to 200.degree.-500.degree. C, optionally with added steam, and then filtered through a membrane such as an ultra-filtration membrane. The latter has preferably a cut range of from 5,000 to 300,000.

Title
Process for regenerating used lubricating oils
Application Number
5/554079
Publication Number
3990963
Application Date
February 28, 1975
Publication Date
November 9, 1976
Inventor
Xavier Marze
Lyon
FR
Daniel Defives
Paris
FR
Maurice Born
Nanterre
FR
Francois Audibert
Ecully
FR
Agent
Millen Raptes & White
Assignee
Institut Francais du Petrole des Carburants et Lubrifiants et Entreprise de Recherches et d Activities Petrollieres Elf
FR
IPC
C10M 11/00
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