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:
Feb. 16, 1988
Filed:
Jan. 08, 1986
Pierre Baumgartner, Grenoble, FR;
Bernard Boute, Saint Brignais, FR;
Pierre Galtier, Vienne-Estressin, FR;
Institut Francais du Petrole, Rueil-Malmaison, FR;
Abstract
The invention concerns a process and an apparatus for making a stable solution or dispersion of a hydrosoluble powder. It is characterized by the simultaneous use of a system for withdrawing powder from a vessel (2) e.g. by means of a gas (4), the dilution of the powder in a carrying gas, the driving with said carrying gas, of the obtained dilution, through a transfer duct (10), the passage of the dilution across an electrostatic field (11) and the solubilization in water of a tank (12). The invention is particularly applicable to the dispersion of polyacrylamides used in the technique of enhanced oil recovery.