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, 1985
Filed:
Apr. 27, 1983
Applicant:
Inventor:
Robert J Higgins, Jr, Sunrise, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ; H03H / ;
U.S. Cl.
CPC ...
333191 ; 333189 ; 310366 ;
Abstract
Piezoelectric filter includes a piezoelectric substrate having an upper and lower opposed major surfaces. A plurality of N coupled resonators where N is an integer greater than two exposed on the surface of the substrate. A plurality of mounting pedestals are utilized to couple the resonators to ground in a manner such that no two non-adjacent resonators are coupled to any one pedestal. This mounting scheme suppresses undesired spurious attenuation poles and improves the selectivity of the piezoelectric filter.
Higgins, Jr, Robert. (1985). Apparatus for suppression of spurious attenuation poles in crystal (U.S. Patent No. 4533885). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4533885
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile