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. 24, 2002
Filed:
Feb. 18, 2000
Harald Merkel, Kållered, SE;
Mikael Reimers, Västra Frölunda, SE;
Christina Skjöldebrand, Saltsjö-Boo, SE;
Other;
Abstract
The present invention relates to an apparatus for detection of foreign bodies in materials, comprising a first antenna device for transmitting electromagnetic signals, the transmitted electromagnetic signals are in the microwave range, the signals comprise at least two signals at different frequencies, a second antenna device for receiving signals originating from the first antenna, where the received signals, at least partially, passes through the materials, device for measuring at least one parameter of the received signals for each frequency, so as to obtain parameter values, device for comparing the parameter value with the corresponding output parameter value of the transmitted signals, so as to obtain a comparison value for each of the frequencies, device for analyzing each comparison value based on a reference value, which reference value is accessible to the apparatus, and device for emitting a signal when the comparison value differs a predetermined amount from the reference value. The invention also relates to a method for detection of foreign bodies in materials.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile