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:
Apr. 05, 1988
Filed:
Mar. 31, 1986
Applicant:
Inventors:
Peter C Schultz, Sturbridge, MA (US);
Satyabrata Raychaudhuri, Sturbridge, MA (US);
Assignee:
SpecTran Corporation, Sturbridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ; D02G / ;
U.S. Cl.
CPC ...
428366 ; 350 9629 ; 350 963 ; 427163 ; 427249 ; 427255 ; 4272552 ; 4272557 ; 4274192 ; 4274197 ; 428368 ; 428375 ; 428379 ; 428384 ; 428389 ;
Abstract
A method for hermetically sealing a silica based fiber product after the fiber product has been drawn from a melt or preform wherein a hermetic layer of boron carbide or a ceramic compound having a density of above about 4 g/cc is deposited upon the fiber product. The fiber product can be initially coated with carbon or boron carbide prior to the application of the ceramic compound. Also, a method for making such fiber products using these methods, and the resultant hermetically sealed fiber products produced thereby.