US2760846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of titanium dioxide
Assignee: Laporte Titanium Ltd
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Filing: 1955-06-17
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Granted: 1956-08-28
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Expires: 1975-06-17
Abstract
No abstract record available.
Inventors
- 👤 Richmond James Thomson
- 👤 Howard A S Bristow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:32
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE BY THE OXIDATION IN THE VAPOUR PHASE OF A TETRAHALIDE SELECTED FROM THE GROUP CONSISTING OF THE TETRACHLORIDE, TETRABROMIDE AND TETRAIODIDE OF TITANIUM, WHEREIN THE TETRAHALIDE VAPOUR IS REACTED WITH GASEOUS OXYGEN WITHIN A BED OF SOLID PARTICLES SELECTED FROM THE GROUP CONSISTING OF PARTICLES OR SILICA, ALUMINA AND TITANIUM DIOXIDE AND MAINTAINED IN A FLUIDISED CONDITION AT A TEMPERATURE WITHIN THE RANGE OF 750* C. TO 1250* C., AND AT LEAST THE GREATER PART OF THE TITANIUM DIOXIDE FORMED IS CARRIED AWAY WITH THE GASES LEAVING THE FLUIDISED BED.
Claim 2
Dependent Claim
98 words
A PROCCESS FOR THE MANUFACTURE OF TITANIUM DIOXIDE BY THE OXIDATION IN THE VAPOUR PHASE OF A TETRAHALIDE SELECTED FROM THE GROUP CONSISTING OF THE TETRACHLORIDE, TETRABROMIDE AND TETRAIODIDE OF TITANIUM, WHEREIN THE TETRAHALIDE VAPOUR IS REACTED WITH GASEOUS OXYGEN WITHIN A BED OF SOLID PARTICLES SELECTED FROM THE GROUP CONSISTING OF PARTICLES OR SILICA, ALUMINA AND TITANIUM DIOXIDE AND MAINTAINED IN A FLUIDISED CONDITION AT A TEMPERATURE WITHIN THE RANGE OF 750* C. TO 1250* C., AND AT LEAST THE GREATER PART OF THE TITANIUM DIOXIDE FORMED IS CARRIED AWAY WITH THE GASES LEAVING THE FLUIDISED BED.
References Cited (Backward Citations)
US2347496A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |