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. 01, 2001
Filed:
Oct. 17, 1996
Applicant:
Inventors:
Daryl Szebesta, Suffolk, GB;
John Richard Williams, Suffolk, GB;
Steven Terrence Davey, Suffolk, GB;
Assignee:
British Telecommunications Public Limited Company, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03B 3/7012 ;
U.S. Cl.
CPC ...
C03B 3/7012 ;
Abstract
The surface quality of halide, preferably fluoride, articles, e.g., articles used in the preparation of halide fibers is improved by cleaning the surface with an aqueous etchant and thereafter removing the etchant by washing the surface with methanol. The aqueous etchant is preferably a solution which contains hydrochloric acid and zirconium oxychloride.