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:
Sep. 17, 2002
Filed:
Oct. 04, 2000
Applicant:
Inventors:
Alexandre M. Mayolet, Chartres, FR;
Michael A. Pell, Fountainebleau, FR;
Assignee:
Corning Incorporated, Corning, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B 7/10 ; C30B 1/104 ; C30B 1/316 ;
U.S. Cl.
CPC ...
C30B 7/10 ; C30B 1/104 ; C30B 1/316 ;
Abstract
A polycrystalline alkali-metal or alkaline-earth metal (more particularly CaF2) fluorides, produced in an original form, namely in the form of beads; said beads having a diameter or equivalent diameter greater than or equal to 100 um, advantageously between 100 um and 2 cm and an apparent density greater than or equal to 60%, advantageously at least 90% of the theoretical density of said fluoride. A process for the preparation of single crystals of the corresponding alkali-metal or alkaline-earth metal fluorides that uses polycrystalline fluorides in the aforementioned original form.