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. 14, 1993
Filed:
May. 20, 1991
R James Barbour, Russell, CA;
Ludmila L Danylewych-May, North York, CA;
Roger Sutcliffe, Nepean, CA;
Forintek Canada Corporation, Vancouver, CA;
Abstract
The presence of decay is determined in wood by testing a sample. The wood tested may be standing timber, cut timber or when coated in building structures. The testing occurs in very short time intervals so that tests can be carried out on timber in mills and the like. The method of testing includes heating a portion of a wood sample at a temperature in the range of about 220.degree. to 350.degree. C. to evaporate analytes from the wood, conveying the analytes in a sample gas flow into an ionizing chamber of an ion mobility spectrometer detector, ionizing the analytes within the ionizing chamber at a temperature in the range of about 220.degree. to 350.degree. C., generating an ion drift time signature in the detector, and comparing the signature with predetermined signatures representing decay in wood.