Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1991-06-11
1992-08-11
Bell, Mark L.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 10, 501 20, C03C 3074
Patent
active
051378515
ABSTRACT:
A crystallizable glass composition comprising PbO and/or Bi.sub.2 O.sub.3, ZnO, B.sub.2 O.sub.3, Cr.sub.2 O.sub.3, SnO.sub.2 and optionally SiO.sub.2 and/or Al.sub.2 O.sub.3, having an optical density parameter .gtoreq.1.6.
REFERENCES:
patent: 3088835 (1963-05-01), Pirooz
patent: 3113878 (1963-12-01), Martin
patent: 3959543 (1976-05-01), Ellis
patent: 3973975 (1976-08-01), Francel et al.
patent: 4824809 (1989-04-01), Grabowski et al.
Hormadaly Jacob
Taylor Barry E.
Bell Mark L.
E. I. Du Pont de Nemours and Company
Jones Deborah
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