US3745209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of vanadium(carbo)nitride
Assignee: HOLLANDSE METALL IND BILLITON
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Filing: 1970-09-09
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Granted: 1973-07-10
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Expires: 1990-09-09
Abstract
Abstract A PROCESS FOR THE PREPARATION OF VANADIUM CARBONITRIDE AND/OR VANADIUM NITRIDE-CONTAINING MATERIALS, WHICH CONSISTS IN TREATING AN OXIDIC VANADIUM-CONTAINING MATERIAL AT HIGH TEMPERATURE WITH, IN SUCCESSION, OR WHOLLY OR PARTLY SIMULTANEOUSLY, GASEOUS HYDROCARBONS AND NITROGEN, WITH OR WITHOUT AMMONIA.
Inventors
- 👤 S Middelhoek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:08
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/082; C01B21/0828; C01P; C01P2006/00; 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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |