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. 14, 1985
Filed:
Apr. 21, 1983
Applicant:
Inventor:
Un-Chul Paek, West Windsor Township, Mercer County, NJ (US);
Assignee:
AT&T Technologies, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9631 ;
Abstract
A single mode lightguide fiber having a trapezoidal shaped refractive index profile. In a particular embodiment the ratio of the upper base to the lower base is less than 0.3.