Patent US3786133A successfully refreshed from Google Patents.
US3786133A
Expired / Lapsed
US
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Titanium carbide preparation
Assignee: FER TITANE QUEBEC Inc
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Filing: 1970-09-11
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Granted: 1974-01-15
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Expires: 1990-09-11
Abstract
Abstract PREPARATION OF TIC FROM IMPURE TITANIUM OXIDE CONTAINING STARTING MATERIALS BY USING A CARBIDING PROCESS INVOLVING A CATALYZER, A BINDER, A CONTROLLED HEATING SPEED AND TEMPERATURE, WHEREBY PURE TITANIUM CARBIDE GRAINS HAVING HIGH COMBINED CARBON AND LOW FREE CARBON CONTENTS ARE OBTAINED AS ONE PHASE AND A METALLIC MATRIX SURROUNDING THE TITANIUM CARBIDE AS ANOTHER PHASE. THE METALLIC MATRIX IS READILY REMOVED FROM THE TWO PHASE BODY BY LEACHING, THEREBY RECOVERING THE PURE TITANIUM CARBIDE.
Inventors
- 👤 S Chiu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; C01B32/914; C01B32/921; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2006/00; C01P2006/12; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |