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. 14, 2023
Filed:
Jul. 18, 2019
Shimadzu Corporation, Kyoto, JP;
Yuji Nakama, Kyoto, JP;
SHIMADZU CORPORATION, Kyoto, JP;
Abstract
A thermal conductivity detector includes a first pipe path that houses a filament, a second pipe path and a third pipe path that connects the first pipe path to the second pipe path. In the third pipe path, first, second and third gas lead-in portions are arranged in this order from the first pipe path toward the second pipe path. A carrier gas is led to the first and third gas lead-in portions alternately, and a sample gas is led to the second gas lead-in portion. The distance between the second and third gas lead-in portions is equal to or smaller than 1.3 times of a maximum dimension of an opening formed at the second gas lead-in portion. At least part of the third pipe path between the second gas lead-in portion and the third gas lead-in portion has a cross sectional area that is equal to or smaller than an area of the opening formed at the second gas lead-in portion.