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:
Nov. 26, 2002
Filed:
Mar. 31, 2000
Applicant:
Inventor:
Kazushige Noguchi, Tokyo, JP;
Assignee:
Oki Electric Industry Co, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 ;
U.S. Cl.
CPC ...
H03H 9/64 ;
Abstract
In a surface acoustic wave filter having tooth comb-type cross electrodes provided over a plurality of levels, connection patterns to connect and ground all the patterns on a chip via dicing lines are provided with at least one of the connection patterns provided between reflectors. Thus, all the electrode patterns are grounded even in a surface acoustic wave filter with the tooth comb-type cross electrodes provided over a plurality of levels, and, as a result, electrostatic breakdown due to discharge can be prevented.