US2964413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkaline earth metal titanates
Assignee: NL Industries Inc
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Filing: 1958-05-07
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Granted: 1960-12-13
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Expires: 1978-05-07
Abstract
No abstract record available.
Inventors
- 👤 Merker Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:39
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/003; C01G23/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A METHOD FOR THE PREPARATION OF FINELY DIVIDED ALKALINE EARTH METAL TITANATE CONTAINING A RARE EARTH METAL WHICH COMPRISES ADMIXING AQUEOUS SOLUTIONS OF TITANIUM TETRACHLORIDE, AMMONIUM TARTRATE AND AN ALKALINE EARTH METAL CHLORIDE TO FORM A SLURRY COMPRISING AN ALKALINE EARTH METAL TITANIUM TARTRATE PRECIPITATE, ADDING A RARE EARTH METAL TO SAID SLURRY, FILTERING SAID SLURRY TO SEPARATE AND RECOVER SAID PRECIPITATE, AND CALCINING SAID PRECIPITATE AT ELEVATED TEMPERATURES TO DESTROY THE TARTRATE VALUES AND FORM A COMPOUND COMPRISING AN ALKALINE EARTH METAL TITANATE AND A RARE EARTH METAL.
Claim 2
Independent Claim
89 words
A METHOD FOR THE PREPARATION OF FINELY DIVIDED ALKALINE EARTH METAL TITANATE CONTAINING A RARE EARTH METAL WHICH COMPRISES ADMIXING AQUEOUS SOLUTIONS OF TITANIUM TETRACHLORIDE, AMMONIUM TARTRATE AND AN ALKALINE EARTH METAL CHLORIDE TO FORM A SLURRY COMPRISING AN ALKALINE EARTH METAL TITANIUM TARTRATE PRECIPITATE, ADDING A RARE EARTH METAL TO SAID SLURRY, FILTERING SAID SLURRY TO SEPARATE AND RECOVER SAID PRECIPITATE, AND CALCINING SAID PRECIPITATE AT ELEVATED TEMPERATURES TO DESTROY THE TARTRATE VALUES AND FORM A COMPOUND COMPRISING AN ALKALINE EARTH METAL TITANATE AND A RARE EARTH METAL.
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) | 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 |