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:
May. 11, 1976
Filed:
Nov. 13, 1974
Applicant:
Inventors:
Toshihiko Waku, Tokyo, JA;
Hiroshi Takeuchi, Tokyo, JA;
Assignee:
Sony Corporation, Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ;
U.S. Cl.
CPC ...
333 72 ; 310-82 ; 333 77 ;
Abstract
A variable band pass filter circuit utilizing first and second ceramic filters including a pair of passive circuits that can be selectively connected between the ceramic filters and wherein the first passive circuit comprises a first capacitor connected between the output of the first ceramic filter and the input of the second ceramic filter and the second passive circuit includes a second capacitor connectable between the output of the first ceramic filter and the input of the second ceramic filter and an inductor connected between the input of the second ceramic filter and a reference point.