Title:
Process for improving lubricating oils by hydro-refining in a first stage and then hydrofinishing under milder conditions
United States Patent 2779713

Inventors:
Cole, Edward L.
Skelton, William E.
Publication Date:
01/29/1957
View Patent Images:
Assignee:
TEXAS CO
Primary Class:
International Classes:
C10G65/04; C10G65/08; C10G65/00