Precision pressed glass object

Details Precision pressed glass object Precision pressed glass object

1983-06-24

1984-03-13

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501900, G02B 300, C03C 316

Patent

active

044363818

ABSTRACT:
Glass objects, lenses in particular, can be pressed with precision from a glass which contains 45-55 mol. % P.sub.2 O.sub.5, 15-40 mol. % BaO, 5-15 mol. % Li.sub.2 O, 5-35 mol. % PbO, 0-2 mol. % Al.sub.2 O.sub.3 and 0-6 mol. % F.

REFERENCES:
patent: 4285730 (1981-08-01), Sanford et al.
patent: 4348484 (1982-09-01), Joormann et al.
patent: 4362819 (1982-12-01), Olszewski et al.

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