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. 09, 1986
Filed:
Jun. 19, 1984
Applicant:
Inventors:
Kentaro Setsune, Sakai, JP;
Osamu Yamazaki, Toyonaka, JP;
Kiyotaka Wasa, Nara, JP;
Kazuo Tazuke, Nara, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 531 ; 20419232 ; 2041922 ; 20419222 ; 29 2535 ; 331 73 ; 331174 ;
Abstract
In a method of manufacturing a surface-acoustic-wave device composed of, at least, a substrate through which a surface acoustic wave is propagated, the propagation velocity of the surface acoustic wave is adjusted by applying light directly to the surface of the substrate constituting the device or through a thin film of asymmetric lattice configuration deposited thereon by sputtering, the thin film having a thickness not exceeding a value of 0.03 times as large as the wavelength of the surface acoustic wave propagated through the substrate.