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:
Sep. 07, 1999
Filed:
Feb. 10, 1997
Applicant:
Inventor:
Hajime Shimamura, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
333193 ; 333196 ; 310349 ;
Abstract
In a ceramic package for encapsulating a SAW (surface acoustic wave) filter, a metal pad is formed on the bottom of a recess formed in the package. A SAW filter chip is mounted to the package such that propagation paths formed on the chip face the bottom of the recess with the intermediary of a gap. The gap promotes easy impedance adjustment.