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US3756787A
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Sistant objects manufactured from this hard metal method for preparing hard metal based on titanium carbide and wear re
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1971-11-15
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Granted: 1973-09-04
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Expires: 1991-11-15
Abstract
Abstract THE INVENTION RELATES TO A METHOD FOR PREPARING A HARD METAL BASED ON TITANIUM CARBIDE, WHEREIN A MIXTURE OF TITANIUM CARBIDE POWDER AND AT LEAST FOUR PERCENT BY WEIGHT OF TITANIUM NICKEL POWDER IS GROUND AND THE GROUND BLEND OF TIC AND TINI IS SINTERED FOR AT LEAST THREE MINUTES UNDER VACUUM OR AN INERT GASEOUS ATMOSPHERE AND UNDER A MECHANICAL PRESSURE OF AT LEAST 150 KG/CM.2 AT A TEMPERATURE THAT LIES ABOVE 1315*C., THE MELTING-POINT OF TINI.
Inventors
- 👤 Kuppevelt G Van
- 👤 Lange R De
- 👤 J Zijderveld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:51
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/10; C22C29/067
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |