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:
Jun. 30, 2009
Filed:
Mar. 17, 2005
Alain Foucault, Saint-Nazaire, FR;
Jack Legrand, Saint-Nazaire, FR;
Luc Marchal, Gournay-sur-Aronde, FR;
Daniel Durand, Rueil-Malmaison, FR;
Alain Foucault, Saint-Nazaire, FR;
Jack Legrand, Saint-Nazaire, FR;
Luc Marchal, Gournay-sur-Aronde, FR;
Daniel Durand, Rueil-Malmaison, FR;
Institut Francais du Petrole, Rueil Malmaison Cedex, FR;
Universite de Nantes, Nantes Cedex, FR;
Abstract
Method for sizing the cells of a centrifugal liquid-liquid chromatography 'column' (CPC column) consisting of stacked discs on which the cells connected in cascade (in series) by small channels are engraved. Rotation of the stack creates a high centrifugal acceleration field which makes it possible to keep a liquid phase referred to as stationary phase motionless, whereas a mobile phase circulates along the CPC column. The cells are three-dimensional, with two dimensions (L, l) of the cells oriented in a plane substantially normal to the axis of rotation (Ω) of the disc and a third dimension (e) oriented in a direction substantially parallel to the axis of rotation, and selected so as to be at least equal to one of the other two dimensions (L, l), thus providing higher efficiency. When the scale of the devices has to be changed, the size of the cells is modified ensuring that, in any case, this third dimension (e) is favored so as to be as great as possible. Applications: design of analytic or preparative chromatography devices.