EP 0245734 B1 19920401 - ELECTRIC LAMP
Title (en)
ELECTRIC LAMP
Publication
Application
Priority
DE 3615944 A 19860512
Abstract (en)
[origin: US4766346A] To provide a melt glass (10) to seal capillary spaces (9) surrounding external current supply leads (8) of molybdenum passing to molybdenum foils (6) in a pinch or press seal (7) of a high temperature, for example incandescent halogen lamp, the melt glass (10) is made of 3-10% Bi2O3, 25%-40% B2O3, remainder PbO. The melt glass has low toxicity and is molybdenum-compatible. An additive of barium oxide, in up to 15% and preferably up to only about 10%, may be added to the PbO. All quantities in mol-percent.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H01K 1/38 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB IT LI
DOCDB simple family (publication)
EP 0245734 A2 19871119; EP 0245734 A3 19891102; EP 0245734 B1 19920401; AT E74465 T1 19920415; CA 1270038 A 19900605; DE 3615944 A1 19871119; DE 3777873 D1 19920507; JP H0719582 B2 19950306; JP S62272454 A 19871126; US 4766346 A 19880823
DOCDB simple family (application)
EP 87106402 A 19870504; AT 87106402 T 19870504; CA 536735 A 19870511; DE 3615944 A 19860512; DE 3777873 T 19870504; JP 11374387 A 19870512; US 4318987 A 19870427