Glass composition suitable for use in electric lamps, stem manuf

Details Glass composition suitable for use in electric lamps, stem manuf Glass composition suitable for use in electric lamps, stem manuf

1994-11-17

1995-11-28

Jones, Deborah

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 68, 501 69, 501 70, 501 72, 313493, C03C 3093, C03C 3085, C03C 3087, C03C 3078

Patent

active

054708052

ABSTRACT:
A novel type of lead-free glass for use in glass components of electric lamps, such as stems (1) for incandescent lamps and fluorescent lamps and lamp envelopes for compact fluorescent lamps. The glass does not contain PbO, F and B.sub.2 O.sub.3. The glass has favorable physical properties as regards meltability, softening, expansion, electric resistance, transparency, strength and chemical resistance.

REFERENCES:
patent: 3723790 (1973-03-01), Dumbaugh, Jr. et al.
patent: 3925089 (1975-12-01), Houben
patent: 4089694 (1978-05-01), Thomas et al.
patent: 4337410 (1982-06-01), Van der Geer et al.
patent: 4370595 (1983-01-01), Willemsen et al.
patent: 4376829 (1983-03-01), Daiku
patent: 4734388 (1988-03-01), Cameron et al.

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