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:
Sep. 04, 1984
Filed:
Oct. 19, 1982
John J Quinn, North Scituate, RI (US);
Ulrich Strom, Hyattsville, MD (US);
Leroy L Chang, Goldens Bridge, NY (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
An ultrasonic wave generator comprising a semiconductor superlattice with a periodic variation in its space charge and a far infrared laser for applying a transient electric field to the superlattice transverse to the direction of its periodic variation. The ultrasonic wave produced has a wavelength of the period of the superlattice which can result in 100 gigahertz ultrasonic waves. Structure is included for guiding these waves into an acoustic system.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile