Patent US4323484A successfully refreshed from Google Patents.
US4323484A
Expired / Lapsed
US
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Glaze resistor composition
Assignee: Panasonic Holdings Corp
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Filing: 1979-11-23
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Granted: 1982-04-06
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Expires: 1999-11-23
Abstract
Abstract A glaze resistor composition composed of a glass frit, molybdenum disilicide, tantalum disilicide, magnesium silicide and aluminum. This glaze resistor composition has a small temperature coefficient of resistivity, a high resistivity stability and small current noises, and can be used in a wide resistivity range.
Inventors
- 👤 Masumi Hattori
- 👤 Toru Ishida
- 👤 Shinichi Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:06
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/14; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/097; C03C8/00; C03C8/02; C03C8/14; H01C; H01C17/00; H01C17/06; H01C17/065; H01C17/06506; H01C17/06513; H01C17/0656
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A glaze resistor composition which consists essentially of 95 to 50% by weight of a glass frit and 5 to 50% by weight of a mixture of silicides comprising molybdenum disilicide, tantalum disilicide, magnesium silicide and aluminium, the molar ratio of molybdenum disilicide plus tantalum disilicide plus magnesium silicide to aluminium being from 90:10 to 60:40.
Claim 2
Dependent Claim
56 words
A glaze resistor composition which consists essentially of 95 to 50% by weight of a glass frit and 5 to 50% by weight of a mixture of silicides comprising molybdenum disilicide, tantalum disilicide, magnesium silicide and aluminium, the molar ratio of molybdenum disilicide plus tantalum disilicide plus magnesium silicide to aluminium being from 90:10 to 60:40.
Claim 3
Dependent Claim
27 words
A glaze resistor composition according to claim 1, in which the molar ratio of molybdenum disilicide plus tantalum disilicide to magnesium silicide is from 60:40 to 80:20.
Claim 4
Dependent Claim
24 words
A glaze resistor composition according to claim 1, in which the molar ratio of molybdenum disilicide to tantalum disilicide is from 90:10 to 70:30.
Claim 5
Dependent Claim
28 words
A glaze resistor composition according to any of claims 1 to 3, in which the mixture of silicides and aluminium contains 1 to 40 molar % of aluminium.
Claim 6
Dependent Claim
27 words
A glaze resistor composition according to any of claims 1 to 3, in which the glass frit is a barium borate glass which may contain niobium oxide.
Claim 7
Dependent Claim
25 words
A glaze resistor composition according to claim 5, wherein the amount of niobium oxide in the glass frit is from 0 to 3% in weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-05 | 1985-10-05 | 1986-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-05 | 1989-10-05 | 1990-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-05 | 1993-10-05 | 1994-04-06 | $7700.00 | Window Closed / Lapsed |