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:
Feb. 15, 1977
Filed:
Apr. 18, 1975
Applicant:
Inventors:
Lewis B Roof, Bartlesville, OK (US);
Donald D DeFord, Glenview, IL (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73 231 ;
Abstract
Chromatographic analysis of the volatile components of a liquid having both volatile and nonvolatile components is accomplished by vaporizing the volatile portion of a liquid sample in a hollow tubular vaporizing column and subsequently analyzing the thus-vaporized portion of the sample. The nonvolatile components of the sample are retained in the vaporizing column during vaporizaton and then are removed by backflushing the vaporizing column with a preselected volume of a liquid solvent.