US2964386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of titanium dioxide
Assignee: British Titan Products Co Ltd
•
Filing: 1958-03-14
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Granted: 1960-12-13
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Expires: 1978-03-14
Abstract
No abstract record available.
Inventors
- 👤 Evans Arthur Wallace
- 👤 Hughes William
- 👤 Groves James Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:13
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
IN A METHOD OF PREPARING TITANIUM DIOXIDE BY REACTION OF TITANIUM TETRAHALIDE WITH OXYGEN IN A VAPOR SPACE AT A TEMPERATURE HIGH ENOUGH TO CAUSE OXYGEN TO REACT WITH TITANIUM TETRAHALIDE TO FORM TITANIUM DIOXIDE, THE IMPROVEMENT WHICH COMPRISES ESTABLISHING A FLUIDIZED BED OF INERT PARTICLES BELOW THE VAPOR SPACE, AND PROJECTING THE OXYGEN AND TITANIUM TETRAHALIDE THROUGH THE BED AND INTO SAID VAPOR SPACE WHEREBY TO CAUSE REACTION BETWEEN TITANIUM TETRACHLORIDE AND OXYGEN IN SAID VAPOR SPACE.
References Cited (Backward Citations)
US2828187A
Cited
US2760846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-13 | 1964-06-13 | 1964-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-13 | 1968-06-13 | 1968-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-13 | 1972-06-13 | 1972-12-13 | $7700.00 | Window Closed / Lapsed |