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. 08, 2005
Filed:
Nov. 03, 2003
Applicants:
Hiroyuki Nakamura, Katano, JP;
Kazunori Nishimura, Yawata, JP;
Akio Tsunekawa, Moriguchi, JP;
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H009/64 ;
U.S. Cl.
CPC ...
Abstract
A surface acoustic wave filter has a piezoelectric substrate; at least an input IDT electrode arranged on the piezoelectric substrate; and at least an output IDT electrode arranged on the plezoelectric substrate. A pitch of electrode fingers of the input IDT electrode and a pitch of electrode fingers of the output IDT electrode are different from each other.