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:
Jul. 26, 1994
Filed:
Mar. 16, 1993
Hisaharu Yanagawa, Tokyo, JP;
Takahiro Ono, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
An optical fiber for connection to waveguide type optical device has a core having a flat cross-section, a first clad which is formed along a greater diameter of the core and which has a refractive index smaller than that of the core, and a second clad which is formed outside of the core and the first clad and which has a refractive index smaller than that of the core and greater than that of the first clad, wherein a2.multidot..DELTA.2 =b.sup.2 .multidot..DELTA.1, where a is the greater diameter of the core, b is the smaller diameter of the core, .DELTA.1 is the difference in specific refractive index between the core and the first clad, and .DELTA.2 is the difference in specific refractive index between the core and the second clad.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile