Patent US2998321A successfully refreshed from Google Patents.
US2998321A
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Solutions of titanium and aluminium salts
Assignee: British Titan Products Co Ltd
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Filing: 1958-02-03
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Granted: 1961-08-29
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Expires: 1978-02-03
Abstract
No abstract record available.
Inventors
- 👤 Evans Arthur Wallace
- 👤 Brown Arthur Dolby
- 👤 Roddam Hugh Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:31
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/36; C09C1/3607; C09C1/3653; C09C1/3661; C09C1/0081; C09C1/0084; C09C3/00; C09C3/06; C09C3/063; C01; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
PROCESS FOR PREPARING AN AQUEOUS SOLUTION OF ALUMINIUM AND TITANIUM, EACH IN THE FORM OF A WATERSOLUBLE SALT WITH SULPHURIC ACID, WHICH COMPRISES DISSOLVING FINELY-DIVIDED, HYDRATED TITANIUM DIOXIDE SUBSTANTIALLY FREE FROM ACID-SOLUBLE COLORING IMPURITIES IN STRONG SULPHURIC ACID OF AT LEAST ABOUT 75% AT A TEMPERATURE ABOVE APPROXIMATELY 100*C., AND THEREAFTER ADDING FINELY-DIVIDED HYDRATED ALUMINIUM OXIDE SUBSTANTIALLY FREE FROM ACID-SOLUBLE COLORING IMPURITIES TO THE SOLUTION, TO FORM, WITH ACID IN THE SOLUTION, ALUMINIUM SULPHATE, THE LAST NAMED STEP BEING CONDUCTED AT AN ELEVATED TEMPERATURE BETWEEN APPROXIMATELY 100*C. AND 160*C.
Claim 2
Dependent Claim
89 words
PROCESS FOR PREPARING AN AQUEOUS SOLUTION OF ALUMINIUM AND TITANIUM, EACH IN THE FORM OF A WATERSOLUBLE SALT WITH SULPHURIC ACID, WHICH COMPRISES DISSOLVING FINELY-DIVIDED, HYDRATED TITANIUM DIOXIDE SUBSTANTIALLY FREE FROM ACID-SOLUBLE COLORING IMPURITIES IN STRONG SULPHURIC ACID OF AT LEAST ABOUT 75% AT A TEMPERATURE ABOVE APPROXIMATELY 100*C., AND THEREAFTER ADDING FINELY-DIVIDED HYDRATED ALUMINIUM OXIDE SUBSTANTIALLY FREE FROM ACID-SOLUBLE COLORING IMPURITIES TO THE SOLUTION, TO FORM, WITH ACID IN THE SOLUTION, ALUMINIUM SULPHATE, THE LAST NAMED STEP BEING CONDUCTED AT AN ELEVATED TEMPERATURE BETWEEN APPROXIMATELY 100*C. AND 160*C.
References Cited (Backward Citations)
US2092132A
Cited
US2671031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |