Method of forming glass having integral polarizing and non-polar

Details Method of forming glass having integral polarizing and non-polar Method of forming glass having integral polarizing and non-polar

1998-10-16

2000-05-09

Silverman, Stanley S.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 3011, 65 321, 65 323, 65 324, 65 336, 4271631, 427165, 427269, 427270, 427271, 427272, 427282, 427287, C03C 1500, C03C 824, C03C 1704, C03B 3700

Patent

active

060587385

ABSTRACT:
Method of making polarizing glass having integral polarizing and non-polarizing regions is disclosed. The method involves applying a protective glass/frit material capable of blocking reducing gas to the surface of the glass to form a desired pattern, exposing the glass to a reducing gas atmosphere to render unprotected glass polarizing, and removing the protective glass/frit material to reveal underlying non-polarizing regions.

REFERENCES:
patent: 3899314 (1975-08-01), Siegmund
patent: 3961120 (1976-06-01), Hearn et al.
patent: 4190451 (1980-02-01), Hares et al.
patent: 4269617 (1981-05-01), Shibuya et al.
patent: 4304584 (1981-12-01), Borrelli et al.
patent: 4479819 (1984-10-01), Borrelli et al.
patent: 5679500 (1997-10-01), Matsuo et al.

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