US3552995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of coated titanium dioxide particles
Assignee: British Titan Products Co Ltd
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Filing: 1968-07-10
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Granted: 1971-01-05
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Expires: 1988-07-10
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF COATED METAL OXIDE PARTICLES COMPRISING OXIDISNG A METAL HALIDE IN THE VAPOUR PHASE TO PROVIDE A SUSPENSION OF STARTING METAL OXIDE PARTICLES IN A HOT STREAM, INTRODUCING A DIFFERENT METAL HALIDE INTO THE GAS STREAM TO DRY COAT A DIFFERENT METAL OXIDE ON THE PARTICLES, RECOVERING THE DRY COATED METAL OXIDE PARRICLES FROM THE GAS STREAM AND SUBJECTING THEM TO A WET COATING PROCESS.
Inventors
- 👤 Stanley Powell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:18
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; C01; C01G; C01G23/00; C01G23/04; C01G23/047; C01G23/07; C01G23/075; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/60
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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |