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. 03, 2005
Filed:
Nov. 07, 2003
Applicants:
Philip St. John Russell, Bath, GB;
Timothy Adam Birks, Bath, GB;
Jonathan Cave Knight, Bath, GB;
Inventors:
Assignee:
Crystal Fibre A/S, Birkerod, DK;
Primary Examiner:
Int. Cl.
CPC ...
G02B006/02 ;
U.S. Cl.
CPC ...
Abstract
In a method of producing a photonic crystal fibre, a preform () that includes holes is formed and the preform () is drawn into a fibre. The method includes the step of applying a pressure differential to certain of the holes to control changes in the fibre structure during the draw.