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:
Jan. 10, 2017
Filed:
Jul. 17, 2014
Applicant:
Valco Instruments Company, L.p., Houston, TX (US);
Inventors:
Stanley D. Stearns, Houston, TX (US);
Ales Plistil, Houston, TX (US);
Assignee:
Valco Instruments Company, L.P., Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 15/14 (2006.01); F04B 19/00 (2006.01);
U.S. Cl.
CPC ...
B01D 15/14 (2013.01); F04B 19/006 (2013.01); Y10T 137/85978 (2015.04);
Abstract
A combined dual pump-injector valve utilizing a single piece of material to house the barrel for each of the two piston-based pumps and to provide the stator of the associated valve, thus eliminating any need for connections between the pumps and the valve, and therefore eliminating the potential for high-pressure leaks or pressure reductions. The combined dual pump-injector valve permits injection of nanoliter-sized samples into a chromatographic column such that complete analyses can be completed with microliters of mobile phase with nanoliters of a sample.