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:
Aug. 17, 1982
Filed:
Nov. 03, 1980
Applicant:
Inventors:
Thomas W Grudkowski, Glastonbury, CT (US);
Meyer Gilden, West Hartford, CT (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
3103 / ; 3103 / ; 3103 / ; 310346 ; 333195 ;
Abstract
Temperature compensation is provided to a surface acoustic wave device including acoustoelectric transducers (12, 14) formed on a surface of a gallium arsenide substrate (10), by a composite layer including silicon dioxide (18, 26) and a mass loading metal (20, 24), which may be gold, titanium and gold, or other metals having Rayleigh wave velocities lower than that of gallium arsenide, such as silver and platinum.