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:
Sep. 28, 1982
Filed:
Sep. 26, 1980
British-American Tobacco Co., Ltd., London, GB;
Abstract
In a headspace-sampling apparatus and method, use is made of a sampling body which defines a sample chamber, first passage means extending from said chamber, means for connecting said passage means to the entry end of a chromatography column held in operative position in a gas chromatograph, second passage means extending to said chamber, and means for connecting a source of gas to said second passage means. When the first-named connection means is connected to the column, a gas flow can be established within the body from the second named connection means through the said chamber to the entry end of the column, whereby a headspace sample of said substance is swept directly from said chamber on to an entry end region of said column, the headspace sample being cumulatively trapped at said region.