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. 17, 1983
Filed:
Apr. 30, 1980
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310335 ; 310337 ; 29 2535 ;
Abstract
An acoustic spherical lens wherein a hemispherical hole is formed from a bubble which appears owing to the expansion of resudual gases in a lens material employing silica, and the hemispherical hole is used as a lens surface.
Quick Actions:
Ishikawa, Isao. (1983). Piezoelectric acoustic transducer with spherical lens (U.S. Patent No. 4384231). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4384231
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile