Tin borophosphate glass comprising SnO, B2O3, and P2O5 as main components and sealing material using the glass
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United States of America Patent
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Oct 23, 2001
Grant Date -
N/A
app pub date -
Feb 2, 2000
filing date -
Apr 6, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tin borophosphate glass for use in sealing materials includes, by mole, 30 to 80% of SnO, 5 to 60% of B.sub.2 O.sub.3, and 5 to 24% of P.sub.2 O.sub.5 as main components. The glass is free of lead but is of equal quality to those of conventional lead-containing sealing glasses. The glass can provide a satisfactory sealing material.
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