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:
Feb. 05, 2008
Filed:
Aug. 04, 2005
Christine Janet Shearer, Bristol, GB;
Carl David Brancher, Avergavenny, GB;
Rajkumar Jakkaraju, Newport, GB;
Christine Janet Shearer, Bristol, GB;
Carl David Brancher, Avergavenny, GB;
Rajkumar Jakkaraju, Newport, GB;
Aviza Technologies Limited, Newport, Gwent, GB;
Abstract
An acoustic resonator of one inventive aspect includes a substrate, at least one generally crystalline primer layer provided on the substrate either directly or on top of one or more intermediate layers, a generally smooth and generally crystalline electrode layer provided on the primer layer, and a piezoelectric layer provided on the electrode layer. The primer layer, or at least one of the primer layers, has a crystallographic structure belonging to a first crystal system, and the electrode layer has a crystallographic structure belonging to a second crystal system which is different to the first system. The atomic spacing of the primer layer or at least one of said primer layers and that of the electrode matches to within about 15%.