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. 17, 2005
Filed:
Mar. 27, 2003
Applicants:
Yoshiki Kuhara, Osaka, JP;
Yutaka Kakuno, Osaka, JP;
Inventors:
Yoshiki Kuhara, Osaka, JP;
Yutaka Kakuno, Osaka, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N021/00 ;
U.S. Cl.
CPC ...
Abstract
An inspection apparatus for an optical transmission device selects an optical path in accordance with the wavelength of an optical signal transmitted from the optical transmission device and displays an indication of the wavelength of the selected optical signal according to an electrical signal. Thus, an optical transmission device used for single-optical-fiber bidirectional transmission easily can be checked as to whether it is provided for a subscriber or for a central station using different wavelengths.