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. 23, 2005
Filed:
Dec. 20, 2000
Applicants:
Wolfgang Pahl, Munich, DE;
Heiner Bayer, Olching, DE;
Inventors:
Wolfgang Pahl, Munich, DE;
Heiner Bayer, Olching, DE;
Assignee:
Epcos AG, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R017/00 ; H01L041/04 ; H01L041/08 ; H01L041/18 ; H02N002/00 ;
U.S. Cl.
CPC ...
Abstract
A method of producing a surface wave component with a drain for pyroelectric voltage includes forming electrically-conductive structures on a piezoelectric substrate. The structures form an acoustic path comprising an electroacoustic transducer. The method also includes forming a high-resistance layer on an entire surface of the substrate and on top of the electrically-conductive structures, and removing the high-resistance layer from at least a region corresponding to the electroacoustic transducer, such that at least a region outside the acoustic path remains covered by the high-resistance layer.