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:
Jul. 07, 1981
Filed:
Oct. 11, 1979
Applicant:
Inventor:
Amin M Hanafy, Andover, MA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
310334 ; 310336 ; 128660 ; 73632 ;
Abstract
The rate of decay of oscillations caused by application of driving pulses to the spaced crystals of an acoustic electric transducer that are mounted on a base is increased by making the thickness of the shield in contact with the ends of the crystals remote from the base such that asymmetrical Lamb waves flowing along the shield that can induce crystal oscillations in the thickness mode have a wavelength equal to twice the spacing between crystals so that their integrated effect is nearly zero.
Quick Actions:
Hanafy, Amin. (1981). Acoustic electric transducer with shield of controlled thickness (U.S. Patent No. 4277711). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4277711
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile