US3615172A
Expired / Lapsed
US
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Preparation of crystalline carbonatozirconates of ammonium and potassium
Assignee: NL Industries Inc
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Filing: 1969-02-12
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Granted: 1971-10-26
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Expires: 1989-02-12
Abstract
Abstract Ammonium or potassium carbonatozirconate is prepared as a crystalline, water-soluble product by the reaction, in a liquid medium consisting essentially of a lower aliphatic alcohol and a minor amount of water, of a water-soluble zirconium chloride and the carbonate or bicarbonate of the alkali.
Inventors
- 👤 Franklin Charles Fulson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:40
CPC Classifications
C; C01; C01G; C01G25/00; C01G25/006
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
20 words
A process as set forth in claim 1 in which the reaction product is washed with said alcohol before drying.
Claim 2
Dependent Claim
25 words
A process as set forth in claim 1 in which the atomic ratio of alkali to zirconium is in the range from 10:1 to 4:1.
Claim 3
Dependent Claim
31 words
A process as set forth in claim 1 in which the alkali is ammonium and the atomic ratio of alkali to zirconium is in the range from about 14:1 to 5:1.
Claim 4
Dependent Claim
20 words
A process as set forth in claim 4 in which the reaction product is washed with said alcohol before drying.
Claim 5
Dependent Claim
31 words
A process as set forth in claim 1 in which the alkali is potassium and the atomic ratio of alkali to zirconium is in the range from about 6:1 to 3:1.
Claim 6
Dependent Claim
20 words
A process as set forth in claim 6 in which the reaction product is washed with said alcohol befOre drying.
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |