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:
Apr. 05, 2005
Filed:
Nov. 12, 2001
Hansjörg Cueni, Stansstad, CH;
Heinrich Scherrer, Büsserach, CH;
Hansjörg Cueni, Stansstad, CH;
Heinrich Scherrer, Büsserach, CH;
CTC Analytics AG, Zwingen, CH;
Abstract
The sample injection valve for high-performance liquid chromatography (HPLC) devices comprises a stator with inlets for the sample and the mobile phase, outlets leading to the chromatography column and to a waste collector, as well as connections for both ends of a sample loop. Its rotor has the customary connection channels. An additional washing liquid inlet () opens into the connecting channel () that, in one valve position, connects the sample inlet () to the outlet () leading to the waste collector. This enables the sample inlet and the pipette or syringe located therein to be rinsed.