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:
Sep. 22, 1981
Filed:
Apr. 17, 1980
Robert Aude, Biviers, FR;
Pierre Baumgartner, Grenoble, FR;
Jean-Pierre Desmarquest, Mesnil Le Roi, FR;
Jean-Pierre Franck, Bougival, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
Petroleum sulfonates are manufactured by reacting a hydrocarbon stock with a sulfonating agent and neutralizing the sulfonation product. The hydrocarbon stock is pretreated with hydrogen, in the presence of a NiW or NiMo catalyst, under specified conditions: its sulfur content is decreased by at least 50%, but its aromatic hydrocarbon content is decreased by not more than 35%, so that the aromatic hydrocarbons content remains at least 20% b.w. after completion of the pretreatment.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile