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. 23, 2005
Filed:
Nov. 22, 2000
Applicants:
Satoshi Kumayasu, Tokyo, JP;
Eiichi Nakagawa, Tokyo, JP;
Inventors:
Satoshi Kumayasu, Tokyo, JP;
Eiichi Nakagawa, Tokyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B006/26 ;
U.S. Cl.
CPC ...
Abstract
First to sixth optical switchestoare provided: in event of failure on the part of a third input/output port, only the first and second optical switchesandturn ON; in the event of failure on the part of a second input/output port, only the third and fourth optical switchesandturn ON; and in the event of failure on the part of a first input/output port, only the fifth and sixth optical switchesandturn ON.