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:
Nov. 11, 2008
Filed:
May. 23, 2007
Kyosuke Ozaki, Fukushima-ken, JP;
Kyosuke Ozaki, Fukushima-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A method of producing a surface acoustic wave device includes a sacrificial-layer forming step of forming a sacrificial layer on a piezoelectric substrate so as to cover comb electrodes and reflectors, a space-forming-member forming step of forming a space-forming member while openings are formed near the reflectors along a surface of the sacrificial layer, a sacrificial-layer removing step of removing the sacrificial layer from the openings of the space-forming member, and a resin sealing step of sealing a surface acoustic wave element with sealing resin, the surface acoustic wave element having an excitation protection space formed between the reflectors and the comb electrodes by the space-forming member.