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. 06, 2002
Filed:
Jul. 28, 1999
Applicant:
Inventor:
Hartmut Kanngiesser, Zurich, CH;
Assignee:
SIG Combibloc GmbH, Linnich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 2/704 ;
U.S. Cl.
CPC ...
G01R 2/704 ;
Abstract
A method and device for determining the concentration of a medium other than air in an air/medium aerosol. The dielectric constant of the medium is measured using microwaves in a hollow conductor, with the aerosol passing through a neutral tube intersecting the hollow conductor. The microwave signal which propagates in the hollow conductor is subjected to attenuation and a phase shift due to the difference between the dielectric constant of the medium and that of air, the phase shift of the microwave signal being measured by taking into account the active path length (the tube in the cross section of the hollow conductor).