C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 3/247 (2006.01) C03C 8/14 (2006.01) C03C 8/24 (2006.01)
Patent
CA 2050516
ABSTRACT There is disclosed a sealing material based on a lead sealing glass having a mill addition of a crystalline material having the crystalline structure of magnesium pyrophosphate. The effective coefficient of thermal expansion in a seal is substantially reduced by the mill addition, thereby permitting use with low expansion materials.
Corning Incorporated
Gowling Lafleur Henderson Llp
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