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:
Apr. 12, 1988
Filed:
Mar. 12, 1987
Maurice Born, Nanterre, FR;
Lucienne Briquet, Rueil-Malmaison, FR;
Guy Parc, Rueil-Malmaison, FR;
Nicole Thevenin, Paris, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
Soluble organic calcium complexes are prepared by (a) reacting a sulfonic acid with an excess of calcium oxide or hydroxide over the stoichiometry in a liquid medium comprising a hydrocarbon or a halohydrocarbon, methanol and a C.sub.3 or C.sub.4 alcohol, in the presence of a nitrogen compound having a long hydrocarbon chain, (b) reacting the resultant product with carbon dioxide and (c) recovering the resultant calcium complex.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile