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:
May. 16, 2006
Filed:
May. 23, 2001
Applicants:
Roger W. Whatmore, Milton Keynes, GB;
Paul B. Kirby, Northampton, GB;
Qingxin Su, Xi'an, CN;
Eiju Komuro, Funabashi, JP;
Inventors:
Roger W. Whatmore, Milton Keynes, GB;
Paul B. Kirby, Northampton, GB;
Qingxin Su, Xi'an, CN;
Eiju Komuro, Funabashi, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electric filter comprises a plurality of thin film bulk acoustic resonants () arranged in series and in parallel which have electrodes () of different working area (L) and optionally a piezoelectric layer () of different thickness (T).