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. 21, 2012
Filed:
Jul. 26, 2007
Timothy C. Frank, Midland, MI (US);
John J. Anderson, Midland, MI (US);
Timothy C. Frank, Midland, MI (US);
John J. Anderson, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
A liquid-liquid extraction process that uses counterflowing liquid phases, especially in conjunction with a reciprocating plate extraction column, wherein one of the liquid phases has a lower density than the other and is at least partially saturated with a dispersible gas, requires less plate stack height or a smaller column diameter when plate-to-plate spacing is non-uniform rather than uniform and such non-uniform plate-to-plate spacing includes greater plate-to-plate spacing proximate to raffinate liquid discharge than proximate to feed of the lower density liquid phase.