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:
Aug. 13, 1991
Filed:
Jun. 01, 1990
Andrzej W Kraszewski, Athens, GA (US);
Stuart O Nelson, Athens, GA (US);
Abstract
A process for nondestructively determining the moisture content of single articles such as single grain kernels, seeds, nuts, fruits, or other biological or agricultural products. The article is inserted into a microwave resonant cavity coupled to a microwave radiation source and a measuring circuit. Measurements of the energy dissipated in the sample and the shift in frequency (or wavelength) due to the presence of the article in the cavity are made at each of two orientations differing by about 90 degrees with respect to the maximum electric field vector. The moisture content is subsequently determined from the ratio of the averaged values of the energy dissipated to the shift in frequency. The process is particularly useful for determining the moisture content of articles of irregular or variable shape.