Optical glass

Compositions: ceramic – Ceramic compositions – Devitrified glass-ceramics

Reexamination Certificate

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C501S002000, C501S012000, C428S428000

Reexamination Certificate

active

08053382

ABSTRACT:
Optical glass constituted by an amorphous matrix and crystal grains dispersed in the amorphous matrix, wherein the amorphous matrix comprises a first oxide of at least one of silicon oxide and phosphor oxide and a second oxide of at least one of titanium oxide and zirconium oxide, and wherein the crystal grains is at least one of titanium oxide, zirconium oxide and silicon, an average grain size of the titanium oxide grain being 3 nm to 20 nm, and the average grain size of the silicon crystal being 3 nm to 8 nm.

REFERENCES:
patent: 4564556 (1986-01-01), Lange
patent: 5561089 (1996-10-01), Ishizaki et al.
patent: 6248678 (2001-06-01), Pinckney
patent: 6503857 (2003-01-01), Nakajima et al.
patent: 2003/0232149 (2003-12-01), Oswald et al.
patent: 2005/0119105 (2005-06-01), Zimmer et al.
patent: 2007/0093375 (2007-04-01), Nakajima
patent: 61-086703 (1986-05-01), None
patent: 05-058650 (1993-03-01), None
patent: 06-157045 (1994-06-01), None
patent: H06-157045 (1994-06-01), None
patent: 2007-070603 (2007-03-01), None

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