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. 20, 2008
Filed:
Oct. 27, 2004
Applicant:
Hirohito Yamada, Tokyo, JP;
Inventor:
Hirohito Yamada, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A waveguide structure having a cross-sectional structure wherein Si is in the center and it is surrounded by a peripheral material, which is either SiOor a polymer material. The above-mentioned peripheral material functions as a cladding.