Lead-free low softening point glass

Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...

Reexamination Certificate

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C501S017000, C501S024000

Reexamination Certificate

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06989340

ABSTRACT:
Disclosed is a lead-free low softening point glass whose composition lies within the system SnO—P2O5and containing over 5 to 30 mol % of MnO. The addition of MnO allows the water resistance and coefficient of thermal expansion of the glass to be improved without spoiling its feature of a low softening point. The lead-free low softening point glass can be prepared through a simplified production process.

REFERENCES:
patent: 2400147 (1946-05-01), Hooley
patent: 5246890 (1993-09-01), Aitken et al.
patent: 5281560 (1994-01-01), Francis et al.
patent: 6306783 (2001-10-01), Yamanaka
patent: 2002/0019303 (2002-02-01), Yamanaka
patent: 09-235136 (1997-09-01), None
patent: 2001158640 (2001-06-01), None
patent: 2001199740 (2001-07-01), None
Machine translation of JP 09-235136, Sep. 1997.
J. Japan Inst. Metals, vol. 63, No. 3 (1999), pp. 284-288.

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