US2654145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation-resistant hard composition
Assignee: Kennametal Inc
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Filing: 1951-06-28
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Granted: 1953-10-06
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Expires: 1971-06-28
Abstract
No abstract record available.
Inventors
- 👤 John W Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:35
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A SINTERED HARD COMPOSITION OF MATTER CHARACTERIZED BY SUCH HIGH RESISTANCE TO OXIDATION AT HIGH TEMPERATURES THAT THE TOTAL INCREASE IN THICKNESS ON ONE FACE OF A SPECIMEN AFTER EXPOSURE AT A TEMPERATURE OF 1800* F. FOR A PERIOD OF 72 HOURS DOES NOT EXCEED .005 INCH CONSISTING ESSENTIALLY OF TITANIUM CARBIDE AND A BINDER CONSISTING OF SILICON AND AT LEAST ONE METAL FROM THE GROUP CONSISTING OF IRON, COBALT AND NICKEL, THE SILICON CONSTITUTING AT LEAST 1.5% OF THE COMPOSITION AND FROM 6.6% TO 10% OF THE BINDER.
Claim 2
Dependent Claim
89 words
A SINTERED HARD COMPOSITION OF MATTER CHARACTERIZED BY SUCH HIGH RESISTANCE TO OXIDATION AT HIGH TEMPERATURES THAT THE TOTAL INCREASE IN THICKNESS ON ONE FACE OF A SPECIMEN AFTER EXPOSURE AT A TEMPERATURE OF 1800* F. FOR A PERIOD OF 72 HOURS DOES NOT EXCEED .005 INCH CONSISTING ESSENTIALLY OF TITANIUM CARBIDE AND A BINDER CONSISTING OF SILICON AND AT LEAST ONE METAL FROM THE GROUP CONSISTING OF IRON, COBALT AND NICKEL, THE SILICON CONSTITUTING AT LEAST 1.5% OF THE COMPOSITION AND FROM 6.6% TO 10% OF THE BINDER.
References Cited (Backward Citations)
US2422439A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |