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:
Mar. 03, 2009
Filed:
Jun. 05, 2006
Yasuhiro Hida, Atsugi, JP;
Toshimi Kominato, Atsugi, JP;
Yasuyuki Inoue, Atsugi, JP;
Norio Takato, Tokyo, JP;
Yasumori Ohmura, Tokyo, JP;
Yasuhiro Hida, Atsugi, JP;
Toshimi Kominato, Atsugi, JP;
Yasuyuki Inoue, Atsugi, JP;
Norio Takato, Tokyo, JP;
Yasumori Ohmura, Tokyo, JP;
NTT Electronics Corporation, Tokyo, JP;
Abstract
A Y branch circuit according to the present invention includes; a under clad; a circuit core, formed on the under clad and having a main core and two branch cores, connected to the main core, and an over clad that embeds the circuit core. The main core and the two branch cores are connected across an interval. The two branch cores have a width-to-height ratio of 50% to 150% and have a gap, at the main core end, that is narrower at the over clad side than at the under clad side.