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. 13, 2001
Filed:
Sep. 16, 1998
Applicant:
Inventors:
Rainer Herrmann, Hamburg, DE;
Stefan Zaage, Hannover, DE;
Assignee:
Manfred Tews, Hamburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/704 ; G01R 2/732 ;
U.S. Cl.
CPC ...
G01R 2/704 ; G01R 2/732 ;
Abstract
The microwave leakage field sensor for measuring moisture and/or density of dielectric materials is distinguished by the fact that it is of essentially rotationally symmetrical design and transmissive for electromagnetic radiation in the axial direction toward at least one side, and that an essentially rotationally symmetrical alternating field of standing waves can be generated in it, the spatial period of which field in the peripheral direction is less than the vacuum wavelength at the frequency of the alternating field.