Colored transparent articles

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1975-04-03

1976-08-03

McCamish, Marion E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428212, 428410, 428433, 428434, 428436, B32B 702, B32B 1700, B32B 1504

Patent

active

039730697

ABSTRACT:
In the coloring of bodies of glass by diffusion of coloring ions from a treatment medium into surface layers thereof, the repeatability of the resulting coloration is improved by controlling not only the treatment temperature and composition of the medium and the treatment time, but also by controlling the electrical potential within the medium between a pair of electrodes in contact therewith. Preferably, for electrodes of specified composition and structure, this potential is maintained at a value between -600 mV and +300 mV.

REFERENCES:
patent: 2468402 (1949-04-01), Kreidl
patent: 3393987 (1968-07-01), Plumat
patent: 3468745 (1969-09-01), Navez
patent: 3486995 (1969-12-01), Evers
patent: 3528847 (1970-09-01), Grego
patent: 3615321 (1971-10-01), Carruth
patent: 3639198 (1972-02-01), Plumat
patent: 3650720 (1972-03-01), Grego
patent: 3674454 (1972-07-01), Plumat
patent: 3772135 (1973-11-01), Hara
patent: 3790430 (1974-02-01), Mochel

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