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. 01, 2000
Filed:
Aug. 20, 1998
Jeffrey A Horsman, Charlottesville, VA (US);
Peter J Leavesley, Charlottesville, VA (US);
Peter C Rahn, Palmyra, VA (US);
Thomas R Schumacher, Marshall, WI (US);
Peter C Van Davelaar, Maidens, VA (US);
Dyax Corporation, Cambridge, MA (US);
Abstract
Apparatus for simultaneously supplying solvent to a plurality of chromatography columns using a plurality of pumps. Each pump has a chamber with a movable solvent piston therein and inflow and outflow valves. The outflow valve of each pump is connected to a respective chromatography column. The solvent pistons are simultaneously moved in one direction to pull solvent into the respective chambers until all pistons have achieved an adjustable stop position corresponding to a desired delivery volume. The solvent pistons are then simultaneously moved in the opposite direction to deliver solvent to the respective columns until all pistons have delivered the desired delivery volumes. The solvent pistons are driven by a common pneumatic or hydraulic system.