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. 28, 2007
Filed:
Jun. 07, 2002
Applicants:
Gerard Benard, Petit Couronne, FR;
Eric Duprey, Petit Couronne, FR;
Johannes Anthonius Robert Van Veen, Amsterdam, NL;
Inventors:
Gerard Benard, Petit Couronne, FR;
Eric Duprey, Petit Couronne, FR;
Johannes Anthonius Robert Van Veen, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 45/00 (2006.01); C10G 73/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process to prepare a base oil starting from a slack wax containing feedstock by (a) contacting the feedstock in the presence of hydrogen with a sulphided hydrodesulphurisation catalyst having nickel and tungsten on an acid amorphous silica-alumina carrier and (b) performing a pour point reducing step on the effluent of step (a) to obtain the base oil.