SBN GLASS CERAMIC

Title:

SBN GLASS CERAMIC

Document Type and Number:

WIPO Patent Application WO/2003/078344

Kind Code:

A1

Abstract:

A glass ceramic represented by the chemical composition formula: aRO·bNb₂O₅·cSiO₂·dB₂O₃·eTeO₂·fX (wherein R represents Ba and/or Sr; X represents at least one oxide selected from the group consisting of TiO₂, ZrO₂, P₂O₅ and ZnO; a>b≥0.05; 0.60≥c≥0; 0.70≥d≥0; 0.70≥e≥0; c+d+e≥0.175; a+b+c+d+e=1.0; and 0.10≥f>0). The ratio of dielectric constant at 1 kHz (&epsiv ₁) to dielectric constant at 100 kHz (&epsiv ₁₀₀), &epsiv ₁/&epsiv ₁₀₀, is 10 or greater.

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Inventors:

OCHI YASUO (JP)

Application Number:

PCT/JP2003/002796

Publication Date:

September 25, 2003

Filing Date:

March 10, 2003

Export Citation:

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Assignee:

OHARA KK (JP)
OCHI YASUO (JP)

International Classes:

C03C3/062; C03C3/064; C03C3/097; C03C3/12; C03C3/14; C03C3/19; C03C3/21; C03C4/16; C03C10/00; C03C10/02; (IPC1-7): C03C10/02

Foreign References:

JP2001148114A	2001-05-29
US20020032113A1	2002-03-14
US6248678B1	2001-06-19
JPS4714119B1	1972-04-27
JPS472120B1	1972-01-20

Other References:

JIIN-JYH SHYU: "Crystallization and dielelectric properties of SrO-BaO-Nb2O5-SiO2 tungsten-bronze glass-ceramics", J. AM. CERAM. SOC., vol. 83, no. 12, 2000, pages 3135 - 3140, XP002969577
See also references of EP 1489053A4

Attorney, Agent or Firm:

Arafune, Hiroshi (Iwatocho Shinjuku-ku, Tokyo, JP)

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