US3816172A
Expired / Lapsed
US
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Nonreducible partially crystallized crossover dielectrics
Assignee: Individual
•
Filing: 1972-07-12
•
Granted: 1974-06-11
•
Expires: 1992-07-12
Abstract
Abstract Nonreducible partially crystallized crossover dielectrics in electronic devices consisting essentially of certain glasses which have been fired and comprise crystals dispersed in a glassy matrix.
Inventors
- 👤 L Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:49
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0054; C03C10/0036; C03C10/16; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K3/00; H05K3/46; H05K3/4685; H10; H10N; H10N97/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/24926
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
A device according to claim 1 wherein the glass melt comprises 45-57% SiO2.
Claim 2
Dependent Claim
15 words
A device according to claim 1 having 20-40 percent crystals in the crossover dielectric layer.
Claim 3
Dependent Claim
41 words
A device according to claim 1 wherein said crystals additionally comprise sodium pentaborate and said glass melt consists essentially of, by weight percent, 27-57% SiO2 5-20% Al2O3 7-20% BaO 2-13% TiO2 4-37% ZnO 2-18% B2O3 1-7% Na2SiF6 0-5% K2O 0-5% CdO
Claim 4
Dependent Claim
15 words
A device according to claim 4 having 20-40 percent crystals in the crossover dielectric layer.
Claim 5
Dependent Claim
34 words
A device according to claim 4 wherein the glass melt consists essentially of, by weight percent, 27-54% SiO2 5-18% Al2O3 8-16% BaO 3-12% TiO2 5-36% ZnO 3-17% B2O3 3-6% Na2SiF6 0-4% K2O 2-4% CdO
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |