US4965229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass ceramic for coating metal substrate
Assignee: Panasonic Holdings Corp
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Filing: 1989-02-01
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Granted: 1990-10-23
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Expires: 2009-02-01
Abstract
Abstract The present invention relates to a glass ceramic which can provide a board comprising a metal substrate and the glass ceramic coated on said substrate, particularly a board comprising said board and a fine wiring pattern applied onto said board by means of thick film printing. In particular, it specifies the composition of the glass ceramic.
Inventors
- 👤 Atsushi Nishino
- 👤 Yasuo Mizuno
- 👤 Masaki Ikeda
- 👤 Masahiro Hiraka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:11
CPC Classifications
H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/05; H05K1/053; C; C03; C03C; C03C10/00; C03C10/0054; C03C8/00; C03C8/02; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A glass ceramic for coating metal substrates of which the principal components at least comprise 3-40% of La 2 O 3 or CeO 2 , 20-50% of MgO, 1-20% of CaO, 0-15% BaO, 10-30% of B 2 O 3 , 8-20% of SiO 2 , 0-5% of MO 2 , M being at least one metal selected from Zr, Ti and Sn, and 0-5% of P 2 O 5 , respectively in terms of % by weight.
Claim 2
Dependent Claim
77 words
A glass ceramic for coating metal substrates of which the principal components at least comprise 3-40% of La 2 O 3 or CeO 2 , 20-50% of MgO, 1-20% of CaO, 0-15% BaO, 10-30% of B 2 O 3 , 8-20% of SiO 2 , 0-5% of MO 2 , M being at least one metal selected from Zr, Ti and Sn, and 0-5% of P 2 O 5 , respectively in terms of % by weight.
Claim 3
Dependent Claim
66 words
A glass ceramic for coating metal substrates according to claim 1 which at least comprises 3-30% of La 2 O 3 or CeO 2 , 20-40% of MgO, 1-20% of CaO, 0-15% of BaO, 15-25% of B 2 O 3 , 10-20% of SiO 2 , 0-5% of ZrO 2 , and 0-5% of P 2 O 5 , respectively in terms of % by weight.
Claim 4
Dependent Claim
63 words
A glass ceramic for coating metal substrates according to claim 2 which at least comprises 3-30% of La 2 O 3 or CeO 2 , 20-40% of MgO, 1-20% of CaO, 15-25% of B 2 O 3 , 10-20% of SiO 2 , 0-5% of ZrO 2 , and 0-5% of P 2 O 5 , respectively in terms of % by weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |