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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.:

US 9764251 B1

PDFFull Text
Date of Patent:
Sep. 19, 2017

Filed:

Mar. 05, 2013

Introducing samples into supercritical fluid chromatography systems

Applicant:

Waters Technologies Corporation, Milford, MA (US);

Inventors:

Emily J. Berg, Milford, MA (US);

Joshua A. Shreve, Franklin, MA (US);

James E. Usowicz, Webster, MA (US);

Douglas P. Wittmer, Shrewsbury, MA (US);

Aaron Lebeau, Taunton, MA (US);

Assignee:

Waters Technologies Corporation, Milford, MA (US);

Attorney:

Waters Technologies Corporation

Primary Examiner:

John Fitzgerald

Assistant Examiner:

Truong Phan

Int. Cl.
CPC ...
G01N 1/00 (2006.01); B01D 15/14 (2006.01); B01D 15/40 (2006.01); G01N 30/20 (2006.01); G01N 30/16 (2006.01); G01N 30/28 (2006.01);
U.S. Cl.
CPC ...
B01D 15/14 (2013.01); B01D 15/40 (2013.01); G01N 30/16 (2013.01); G01N 30/20 (2013.01); G01N 30/28 (2013.01); G01N 2030/201 (2013.01); G01N 2030/202 (2013.01); G01N 2030/207 (2013.01);
Abstract

A supercritical fluid chromatography system is provided with an injection valve subsystem for introducing a sample into a flow of mobile phase fluid. The injection valve subsystem includes an auxiliary valve and an inject valve. The operations of the auxiliary and inject valves are coordinated in such a manner as to reduce sample carry-over and system pressure perturbations occurring during sample injection.

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Berg, Emily. (2017). Introducing samples into supercritical fluid chromatography systems (U.S. Patent No. 9764251). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9764251

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