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:
Jun. 14, 2005
Filed:
Nov. 30, 2001
Applicants:
Eric Cassisa, Martigues, FR;
Marc Herzog, Sausset les Pins, FR;
Christophe Ordan, Istres, FR;
Myung J. Shin, Antwerp, BE;
Inventors:
Eric Cassisa, Martigues, FR;
Marc Herzog, Sausset les Pins, FR;
Christophe Ordan, Istres, FR;
Myung J. Shin, Antwerp, BE;
Assignee:
B.P. Chemicals Limited, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
G01N030/00 ; C08F002/34 ;
U.S. Cl.
CPC ...
Abstract
A method for the analysis by on-line gas phase chromatography of a gaseous phase produced by an olefin polymerization process which includes carrying out a chromatographic analysis of a gaseous phase produced by an olefin polymerization process with carrier gases containing mainly hydrogen and/or nitrogen, wherein the content of oxygen and of water of the hydrogen and the nitrogen in the carrier gases is less than 5 ppm by weight.