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:
Sep. 04, 2012
Filed:
Jul. 04, 2007
Bernhard Dehmer, Waldbronn, DE;
Bernhard Dehmer, Waldbronn, DE;
Agilent Technologies, Inc., Santa Clara, CA (US);
Abstract
A valve arrangement is disclosed for providing a switchable fluid connection between a fluid delivery system for driving a mobile phase and a stationary phase adapted for separating compounds of a sample fluid comprised in the mobile phase. The valve arrangement comprises a first valve comprising a first port adapted to be coupled to the fluid delivery system, a second port, and a third port, wherein the first valve is adapted to switch, in a first switch transition, from a first state wherein the first port is coupled with the second port, over a second state wherein the first port, the second port and the third port are coupled altogether, to a third state wherein the first port is coupled with the third port, a second valve comprising a fifth port adapted to be coupled to the stationary phase, a sixth port, and a seventh port, wherein the second valve is adapted to switch, in a second switch transition from a fourth state wherein the fifth port is coupled with the sixth port, to a fifth state wherein the fifth port is coupled with the seventh port, a first fluid path connecting the second port and the sixth port, and a second fluid path connecting the third port and the seventh port, wherein the second fluid path comprises a sample introduction path adapted for introducing the sample fluid into the mobile phase.