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. 30, 2005
Filed:
Apr. 03, 2002
Applicants:
Wataru Ohashi, Tokyo, JP;
Hajime Shimamura, Tokyo, JP;
Tomokazu Komazaki, Tokyo, JP;
Yoshiaki Fujita, Tokyo, JP;
Inventors:
Wataru Ohashi, Tokyo, JP;
Hajime Shimamura, Tokyo, JP;
Tomokazu Komazaki, Tokyo, JP;
Yoshiaki Fujita, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01L041/00 ;
U.S. Cl.
CPC ...
Abstract
A branching filter package has a SAW filter chip housing area which houses a piezo electric base, on which a transmitting SAW filter and a receiving SAW filter having a different frequency passing band with each other, are formed, and an impedance matching circuit and a branching circuit for the transmitting SAW filter and the receiving SAW filter.