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. 29, 1976
Filed:
Feb. 25, 1974
Etienne Godbille, Villemomble, FR;
Lucette Tondu, Bobigny, FR;
Roussel-UCLAF, Paris, FR;
Abstract
A chromatographic device in the form of a tube, adapted to contain a bed of particulate adsorbent material, the tube being provided with a removable, gas and liquid permeable, lid at one end and at the other end with a sliding element permeable to liquids and gas and movable within the tube, the sliding element being provided with means to exert a permanent pressure on the bed of particulate adsorbent material so as to maintain it in the form of a solid body during use and to extrude it from the tube when the lid is removed. The device is used to prepare a bed of particulate adsorbent material, to maintain said bed under pressure during use to avoid movement of particles and to extrude the bed after use.