Glass manufacturing – Processes – With chemically reactive treatment of glass preform
Patent
1976-05-24
1977-08-23
Bashore, S. Leon
Glass manufacturing
Processes
With chemically reactive treatment of glass preform
65 33, 65117, 65DIG2, 106DIG6, 106 53, 106 54, 350160P, 350311, 351163, C03C 1500, C03B 3200, C03C 304, G02B 523
Patent
active
040437817
ABSTRACT:
A silver-halide photochromic glass of alkali-boroaluminosilicate base composition, having a brown coloration in the faded and darkened state, is provided by treating a potentially photochromic glass of specified composition according to a defined two-phase heat treatment to develop photochromic properties therein.
REFERENCES:
patent: 3795523 (1974-03-01), Moriya et al.
patent: 3892582 (1975-07-01), Simms
patent: 3920463 (1975-11-01), Simms
patent: 3938977 (1976-02-01), Gliemeroth
patent: 4001019 (1977-01-01), Yamashita et al.
DeMunn Clark V.
Kerko David J.
Westwig Ralph A.
Wrisley, Jr. David B.
Bashore S. Leon
Corning Glass Works
Janes Jr. Clinton S.
Miga Frank W.
Patty, Jr. Clarence R.
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