Patent US4971068A successfully refreshed from Google Patents.
US2942335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbide metal
Assignee: Firth Sterling Inc
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Filing: 1959-06-23
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Granted: 1960-06-28
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Expires: 1979-06-23
Abstract
No abstract record available.
Inventors
- 👤 William W Wellborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
C; C22; C22C; C22C29/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A SINTERED CABIDE ALLOY HARD METAL CHARACTERIZED BY ITS SUPERIOR COMBINATION OF TRANSVERSE RUPTURE STRENGHT, HARDNESS AND CUTTING INDEX AND BY ITS IMPROVED MICROSTRUCTURE AND WHICH CONTAINS TUNGSTEN CARBIDE AND TITANIUM CARBIDE IN SOLID SOLUTIN, AND TUNGSTEN CARBIDE AND COBALT DISPERSED WITH THE SOLID SOLUTION AS AUZILIARY INGREDIENTS, ALL EMPOLYED IN FINELY COMMINUTED PARTICLE FORM, CHARACTERIZED IN THAT THE TIATNIUM CARBIDE IS EMPLOYED IN A SUPERSATURATED CONDITION WITH AND IN VOLUME PREDOMINANCE OVER THE TUNGSTEN CARBIDE OF THE SOLID SOLUTION, THAT THE SOLID SOLUTION IS EMPLOYED IN VOLUME PREDOMINANCE OVER THE AUXILIARY INGREDIENTS, AND THAT THE TOTAL TUNGSTEN CARBIDE VOLUME CONTENT IS IN PREDOMINANCE OVER THE OTHER INDICIDUAL INGREDIENTS OF THE METAL, FURTHER CARACTERIZED IN THAT THE SOLID SOLUTION CONTAINS ABOUTK 55% TITANIUM CARBIDE AND ABOUT 45% TUNGSTEN CARBIDE, BY VOLUME $2% OF EACH, AND THE TOTAL CONTENT OF THE INGREDIENTS OF THE METAL BEING WITHIN A RANGE BY VOLUME OF ABOUT 54.5 TO 63.7% TUNGSTEN CARBIDE, ABOUT 25.5 TO 36.0% TITANIUM CARBIDE AND ABOUT 6.3 TO 12.0% COBALT.
Claim 2
Dependent Claim
169 words
A SINTERED CABIDE ALLOY HARD METAL CHARACTERIZED BY ITS SUPERIOR COMBINATION OF TRANSVERSE RUPTURE STRENGHT, HARDNESS AND CUTTING INDEX AND BY ITS IMPROVED MICROSTRUCTURE AND WHICH CONTAINS TUNGSTEN CARBIDE AND TITANIUM CARBIDE IN SOLID SOLUTIN, AND TUNGSTEN CARBIDE AND COBALT DISPERSED WITH THE SOLID SOLUTION AS AUZILIARY INGREDIENTS, ALL EMPOLYED IN FINELY COMMINUTED PARTICLE FORM, CHARACTERIZED IN THAT THE TIATNIUM CARBIDE IS EMPLOYED IN A SUPERSATURATED CONDITION WITH AND IN VOLUME PREDOMINANCE OVER THE TUNGSTEN CARBIDE OF THE SOLID SOLUTION, THAT THE SOLID SOLUTION IS EMPLOYED IN VOLUME PREDOMINANCE OVER THE AUXILIARY INGREDIENTS, AND THAT THE TOTAL TUNGSTEN CARBIDE VOLUME CONTENT IS IN PREDOMINANCE OVER THE OTHER INDICIDUAL INGREDIENTS OF THE METAL, FURTHER CARACTERIZED IN THAT THE SOLID SOLUTION CONTAINS ABOUTK 55% TITANIUM CARBIDE AND ABOUT 45% TUNGSTEN CARBIDE, BY VOLUME $2% OF EACH, AND THE TOTAL CONTENT OF THE INGREDIENTS OF THE METAL BEING WITHIN A RANGE BY VOLUME OF ABOUT 54.5 TO 63.7% TUNGSTEN CARBIDE, ABOUT 25.5 TO 36.0% TITANIUM CARBIDE AND ABOUT 6.3 TO 12.0% COBALT.
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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |