Photochromic glass and lens

Details Photochromic glass and lens Photochromic glass and lens

Filed on

1999-09-08

Date issued

2000-12-26

Examiner

Group, Karl

Patent Class

Compositions: ceramic

SubClass

Ceramic compositions

SubSubClass

Glass compositions, compositions containing glass other than...

Other Related Categories

501 66, 501 67, 501 77, C03C 406

Type

Patent

Status

active

Patent number

061659223

Description

ABSTRACT:
A fixed tint, photochromic glasses and sunglass lenses produced therefrom. The glasses have R.sub.2 O--Al.sub.2 O.sub.3 --B.sub.2 O.sub.3 --SiO.sub.2 base compositions, contain silver chloride and bromide contents as photochromic constituents and 0.22-0.38% NiO and 0.034-0.060% CoO, both by weight percent, as glass colorants, the NiO:CoO ratio being in the range of 5.5-7.2:1.

REFERENCES:
patent: 3208860 (1965-09-01), Armistead et al.
patent: 4190451 (1980-02-01), Hares et al.
patent: 4284686 (1981-08-01), Wedding
patent: 5104831 (1992-04-01), Behr et al.
patent: 5300465 (1994-04-01), Grateau et al.
patent: 5381193 (1995-01-01), Wedding
patent: 5424255 (1995-06-01), Kassner
patent: 5639701 (1997-06-01), Kerko et al.
patent: 5728189 (1998-03-01), Kerko et al.
patent: 5973865 (1999-10-01), Havens et al.

Affiliated with

Also associated with

Rating

Photochromic glass and lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photochromic glass and lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photochromic glass and lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-994589