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:
Jun. 05, 1990
Filed:
Nov. 21, 1988
Applicant:
Inventors:
Nobuyoshi Sakamoto, Tokyo, JP;
Ou H Huor, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ;
U.S. Cl.
CPC ...
333193 ; 3103 / ; 3103 / ;
Abstract
A surface-acoustic-wave device includes a surface-acoustic-wave filter with a capacitance connected in parallel between its input and output leads. The capacitance improves the attenuation characteristic of the device on the high-frequency side of the center frequency.