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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.:

US 6000274 B1

PDFFull Text
Date of Patent:
Dec. 14, 1999

Filed:

Jan. 23, 1998

Method for automatically detecting total hydrocarbon content and

Applicant:
Inventors:

Ching-Chih Lai, Hsinchu, TW;

Hung-Chiao Cheng, Hsinchu, TW;

Han-Wen Chu, Hsinchu Hsien, TW;

Hsiang-Hsien Hsiao, Hsinchu Hsien, TW;

Assignee:

Industrial Technology Research Institute, , TW;

Attorney:

Clark & Elbing LLP

Primary Examiner:

Hezron Williams

Assistant Examiner:

J David Wiggins

Int. Cl.
CPC ...
G01N / ; G01N / ;
U.S. Cl.
CPC ...
73 2335 ; 73 1902 ; 73 2338 ; 422 89 ; 210656 ;
Abstract

A method for automatically detecting waste gas. The waste gas is led into a multiple switching valve through which the waste gas is sampled. Then, the waste gas sample is conveyed to an empty column and/or a chromatographic column, via the multiple switching valve. Then, the total hydrocarbon content of the waste gas sample is measured when the waste gas sample is conveyed to the empty column, and the waste gas sample is separated for measuring individual volatile organic compound concentrations of the waste gas sample when the waste as sample is conveyed to the chromatographic column.

Find Patent Forward Citations

Lai, Ching-Chih. (1999). Method for automatically detecting total hydrocarbon content and (U.S. Patent No. 6000274). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6000274

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