Patent US2871197A successfully refreshed from Google Patents.
US2871197A
Expired / Lapsed
US
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Resistance material for fire detector element
Assignee: Specialties Development Corp
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Filing: 1954-10-26
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Granted: 1959-01-27
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Expires: 1974-10-26
Abstract
No abstract record available.
Inventors
- 👤 Macintyre Ronald
- 👤 Sheakley Junior Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:03
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A RESISTANCE MATERIAL EXTRUDABLE AS A PLASTIC MASS ONTO ELECTRICAL CONDUCTORS AND ADAPTED TO BE FUSED THERON, SAID MATERIAL CONSISTING ESSENTIALLY OF ABOUT 50 PARTS BY WEGHT OF MANGANESE DIOXIDE, ABOUT 4 PARTS BY WEIGHT OF ZIRCONIUM SILICATE, ABOUT 12.5 PARTS BY WEIGHT OF A FRIT, ABOUT 33.75 PARTS BY WEIGHT OF STEATIE, ABOUT 3.75 PARTS BY WEIGHT OF FLOUR AND SUFFIEIENT WATER TO RENDER THE MATERIAL EXTRUDABLE.
Claim 2
Dependent Claim
68 words
A RESISTANCE MATERIAL EXTRUDABLE AS A PLASTIC MASS ONTO ELECTRICAL CONDUCTORS AND ADAPTED TO BE FUSED THERON, SAID MATERIAL CONSISTING ESSENTIALLY OF ABOUT 50 PARTS BY WEGHT OF MANGANESE DIOXIDE, ABOUT 4 PARTS BY WEIGHT OF ZIRCONIUM SILICATE, ABOUT 12.5 PARTS BY WEIGHT OF A FRIT, ABOUT 33.75 PARTS BY WEIGHT OF STEATIE, ABOUT 3.75 PARTS BY WEIGHT OF FLOUR AND SUFFIEIENT WATER TO RENDER THE MATERIAL EXTRUDABLE.
References Cited (Backward Citations)
US2495867A
Cited
US2587916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |