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. 21, 2001
Filed:
Sep. 29, 1999
Applicant:
Inventors:
Yasufumi Kaneda, Suzaka, JP;
Jun Tsutsumi, Kawasaki, JP;
Kenya Hashimoto, Funabashi, JP;
Tatsuya Omori, Chiba, JP;
Motoyuki Tajima, Chiba, JP;
Masatsune Yamaguchi, Sakura, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/64 ;
U.S. Cl.
CPC ...
H03H 9/64 ;
Abstract
A surface acoustic wave device which reflects a surface acoustic wave is provided. The reflector of the surface acoustic wave device includes electrode fingers. The electrode fingers are disposed at predetermined intervals d, and are divided into five groups by the width. The widths w of the electrode fingers are varied between widths w,w,and w,so that the reflectance becomes similar to the Hamming function.