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:
Dec. 30, 1986
Filed:
Aug. 26, 1985
Applicant:
Inventors:
Takashi Gounji, Yokohama, JP;
Shinichi Yamamoto, Kawasaki, JP;
Teruo Kawatsu, Oyama, JP;
Yoshiro Tomikawa, Yonezawa, JP;
Masashi Konno, Yonezawa, JP;
Toshiharu Ogasawara, Yonezawa, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H / ; H03H / ;
U.S. Cl.
CPC ...
333186 ; 310359 ; 310366 ; 333189 ; 333192 ;
Abstract
A mechanical filter having as its major part at least one longitudinal vibration mode vibrator, includes a piezoelectric ceramic plate an electrode pair attached to top and bottom surfaces thereof. The piezoelectric ceramic plate is polarized in its thickness direction to form at least two polarized regions, the polarization directions being different from each other.
Gounji, Takashi. (1986). Mechanical filter (U.S. Patent No. 4633204). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4633204
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile