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:
May. 08, 2007
Filed:
Apr. 02, 2004
Applicants:
Hansjörg Emil Cueni, Stanstaad, CH;
Heiner Scherrer, Büsserach, CH;
Werner Döbelin, Reinach, CH;
Inventors:
Assignee:
CS Analytics AG, Beckenried, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 11/074 (2006.01);
U.S. Cl.
CPC ...
Abstract
The rotating valve for high performance liquid chromatography (HPLC) has a stator with connections for the solvent reservoirs, pumps, chromatography columns etc. and a disc-shaped rotor with connecting grooves on the front face for selectively connecting different connections to one another. Said grooves are evenly distributed on two concentrical circles. The connecting grooves on the front face of the rotor are configured in the form of circular segments and are arranged in such a way that fife connections are simultaneously connected to one another in defined positions of the rotor in each circle.