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:
Oct. 16, 2001
Filed:
Jun. 08, 2000
Applicant:
Inventors:
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/902 ; G01L 4/108 ;
U.S. Cl.
CPC ...
G01N 2/902 ; G01L 4/108 ;
Abstract
A method and apparatus are proposed for operating a microacoustic sensor arrangement, for example, to determine the physical characteristics of a measurement medium. Acoustic surface waves with predetermined wave modes are generated and detected by electroacoustic transducers (,) and a measurement for the physical characteristics of the measurement medium is determined from their propagation behavior along a propagation path. In addition, a sagittally polarized surface wave is generated in the area of the surface of the substrate (,) on which the measurement medium is located.