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:
May. 21, 2019
Filed:
Jan. 04, 2017
Applicant:
Wisol Japan Co., Ltd., Kawasaki-shi, Kanagawa, JP;
Inventors:
Motoyuki Tajima, Kawasaki, JP;
Takahiro Sato, Kawasaki, JP;
Assignee:
WISOL JAPAN CO., LTD., Kawasaki-Shi, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/25 (2006.01); H03H 9/64 (2006.01); H03H 9/72 (2006.01); H03H 9/145 (2006.01);
U.S. Cl.
CPC ...
H03H 9/14582 (2013.01); H03H 9/25 (2013.01); H03H 9/64 (2013.01); H03H 9/6483 (2013.01); H03H 9/6493 (2013.01); H03H 9/725 (2013.01);
Abstract
A surface acoustic wave device of a ladder type includes a series resonator and a parallel resonator, in which the parallel resonator includes a first reflector, a second reflector, and a comb-shaped electrode located between the first reflector and the second reflector, and the comb-shaped electrode includes a first section in which electrode fingers are formed at a constant cycle, and a second section in which electrode fingers are formed at a constant cycle different from the cycle of the first section.