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:
Mar. 03, 2009
Filed:
Aug. 15, 2005
Applicants:
Takuo Kudo, Fukushima-ken, JP;
Satoshi Waga, Fukushima-ken, JP;
Inventors:
Takuo Kudo, Fukushima-ken, JP;
Satoshi Waga, Fukushima-ken, JP;
Assignee:
Alps Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an SAW filter on one side of a piezoelectric substrate are formed a pattern portion constituted by a conductor and provided on the outer circumferential portion of the surface acoustic wave device, and a conductor removing portion formed between the surface acoustic wave device and the pattern portion. The shape of the surface acoustic wave device is formed by the conductor removing portion and the surface acoustic wave device remains non-conductive with the pattern by the conductor removing portion.