Patent US3097923A successfully refreshed from Google Patents.
US3097923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of titanium dioxide
Assignee: British Titan Products Co Ltd
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Filing: 1960-05-27
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Granted: 1963-07-16
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 Arkless Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:15
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A METHOD OF PREPARING TITANIUM DIOXIDE BY INTRODUCING TITANIUM TETRACHOLRIDE AND OXYGEN INTO A FLUIDISED BED OF INERT PARTICLES MAINTAINED AT A TEMPERATURE SUFFICIENT TO FORM TITANIUM DIOXIDE FROM REACTION OF TITANIUM TETRACHLORIDE WITH OXYGEN SO THAT SOME TITANIUM DOIXIDE IS CARRIED OUT WITH GASES EMANATING FROM THE BED AND SOME TITANIUM DIOXIDE ADHERES TO INERT PARTICLES OF THE BED, THE IMPROVEMENT WHICH COMPRISES WHILE SO PREPARING TITANIUM DIOXIDE, INTRODUCING TO THE BED A CHLORINATING AGENT COMPRISING CHLORINE AND CARBONACEOUS SUBSTANCE CAPABLE OF CAUSING RECONVERSION OF AT LEAST A PORTION OF THE TITANIUM DIOXIDE ADHERING TO THE INERT PARTICLES TO TITANIUM TETRACHLORIDE WHEREBY TO REDUCE SAID ADHERENCE IN SAID BED AND PROVIDING IN THE BED SUFFICIENT OXYGEN TO OXIDIZE THE TITANIUM TETRACHLORIDE PRODUCED ON SAID RECONVERSION TO FORM TITANIUM DIOXIDE.
Claim 2
Dependent Claim
131 words
IN A METHOD OF PREPARING TITANIUM DIOXIDE BY INTRODUCING TITANIUM TETRACHOLRIDE AND OXYGEN INTO A FLUIDISED BED OF INERT PARTICLES MAINTAINED AT A TEMPERATURE SUFFICIENT TO FORM TITANIUM DIOXIDE FROM REACTION OF TITANIUM TETRACHLORIDE WITH OXYGEN SO THAT SOME TITANIUM DOIXIDE IS CARRIED OUT WITH GASES EMANATING FROM THE BED AND SOME TITANIUM DIOXIDE ADHERES TO INERT PARTICLES OF THE BED, THE IMPROVEMENT WHICH COMPRISES WHILE SO PREPARING TITANIUM DIOXIDE, INTRODUCING TO THE BED A CHLORINATING AGENT COMPRISING CHLORINE AND CARBONACEOUS SUBSTANCE CAPABLE OF CAUSING RECONVERSION OF AT LEAST A PORTION OF THE TITANIUM DIOXIDE ADHERING TO THE INERT PARTICLES TO TITANIUM TETRACHLORIDE WHEREBY TO REDUCE SAID ADHERENCE IN SAID BED AND PROVIDING IN THE BED SUFFICIENT OXYGEN TO OXIDIZE THE TITANIUM TETRACHLORIDE PRODUCED ON SAID RECONVERSION TO FORM TITANIUM DIOXIDE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-15 | 1967-01-14 | 1967-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-15 | 1971-01-14 | 1971-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-15 | 1975-01-14 | 1975-07-16 | $7700.00 | Window Closed / Lapsed |