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:
Dec. 24, 2013
Filed:
Dec. 14, 2009
Gordon Lambertus, Wellesley, MA (US);
William Steinecker, Farmersville, OH (US);
Gordon Lambertus, Wellesley, MA (US);
William Steinecker, Farmersville, OH (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
3M Innovative Properties Company, Saint Paul, MN (US);
Abstract
A method and apparatus for two-dimensional gas chromatography (GC), including a valve having first and second positions (P, and P), and first through fourth sample flow paths (FP-FP). In P, a first gas sample is collected from a first dimension GC column via FP, a first pressure source and a first, second dimension GC column are connected via FP, a second pressure source and a second, second dimension GC column are connected via FP, and FPis disconnected. In P, the first sample in FPis introduced to the second, second dimension GC column via FP, with aid of the second pressure source, a second gas sample is collected from the first dimension GC column via FP, the first pressure source and the first, second dimension GC column via FPare connected, and FPis disconnected.