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:
Nov. 28, 2017
Filed:
Apr. 29, 2016
Applicant:
Thermo Fisher Scientific (Bremen) Gmbh, Bremen, DE;
Inventors:
Hans-Juergen Schlueter, Bremen, DE;
Eric Wapelhorst, Bremen, DE;
Nils Stoebener, Bremen, DE;
Hans-Juerg Jost, Hilterfingen, CH;
Tim Stoltmann, Grenoble, FR;
Assignee:
Thermo Fisher Scientific (Bremen) GmbH, Bremen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/35 (2014.01); H01J 49/04 (2006.01); G01N 21/3504 (2014.01); G01J 3/02 (2006.01); G01F 1/00 (2006.01); G01N 21/11 (2006.01); G01N 21/85 (2006.01); G01N 33/00 (2006.01); H01J 49/24 (2006.01); G01N 30/74 (2006.01); G01N 30/88 (2006.01);
U.S. Cl.
CPC ...
G01N 21/3504 (2013.01); G01F 1/00 (2013.01); G01J 3/02 (2013.01); G01N 21/11 (2013.01); G01N 21/35 (2013.01); G01N 21/85 (2013.01); G01N 33/0009 (2013.01); H01J 49/0422 (2013.01); G01N 30/74 (2013.01); G01N 2030/8868 (2013.01); H01J 49/24 (2013.01);
Abstract
A system for controlling flow of gas in a continuous flow isotope ratio analyser is provided. The system comprises gas inlet and gas outlet lines for providing gas into and from a measuring cell, and at least one switchable flow restriction on the gas inlet line, for selectively controlling gas flow into the isotope ratio analyser. Also provided is a method for determining an isotope ratio using the system according to the invention.