US2798049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina sols and gels and process of producing same
Assignee: Monsanto Chemicals Ltd
•
Filing: 1952-06-21
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Granted: 1957-07-02
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Expires: 1972-06-21
Abstract
No abstract record available.
Inventors
- 👤 John F White
- 👤 Dudley A Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:43
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/45; C; C01; C01F; C01F7/00; C01F7/02; C01F7/34; D06M2400/00; D06M2400/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
45 words
A STABLE, ACIDIC AALUMINA AQUASOL CONTAINING ABOUT 1 TO 10% BY WEIGHT OF HYDRATED ALUMINA, CALCULATED AS AL2O3, FROM ABOUT 5 TO 38% BY WEIGHT OF AMMONIUM CHLORIDE AND FROM 1 TO 25% BY WEIGHT OF GELATIN BASEDD ON THE AL2O3 CONTENT OF SAID AQUASOL.
Claim 2
Dependent Claim
45 words
A STABLE, ACIDIC AALUMINA AQUASOL CONTAINING ABOUT 1 TO 10% BY WEIGHT OF HYDRATED ALUMINA, CALCULATED AS AL2O3, FROM ABOUT 5 TO 38% BY WEIGHT OF AMMONIUM CHLORIDE AND FROM 1 TO 25% BY WEIGHT OF GELATIN BASEDD ON THE AL2O3 CONTENT OF SAID AQUASOL.
Claim 3
Dependent Claim
60 words
A PROCESS OF PRODUCING STABLE ALUMINA SOLS WHICH COMPRISES TREATING AN AQUEOUS SOLUTION OF FROM ABOUT 1 TO 10% BY WEIGHT OF ALUMINUM CHLORIDE, CALCULATED AS AL2O3, AND FROM ABOUT 0.5% TO 25% BY WEIGHT OF GELATIN. BASED ON THE AL2O3 EQUIVALENT OF SAID ALUMINUM CHLORIDE. WITH AMMONIA UNTIL FROM ABOUT 65 TO 85% OF SAID ALUMINUM CHLORIDE IS NEUTRALIZED.
Claim 4
Dependent Claim
60 words
A PROCESS OF PRODUCING STABLE ALUMINA SOLS WHICH COMPRISES TREATING AN AQUEOUS SOLUTION OF FROM ABOUT 1 TO 10% BY WEIGHT OF ALUMINUM CHLORIDE, CALCULATED AS AL2O3, AND FROM ABOUT 0.5% TO 25% BY WEIGHT OF GELATIN. BASED ON THE AL2O3 EQUIVALENT OF SAID ALUMINUM CHLORIDE. WITH AMMONIA UNTIL FROM ABOUT 65 TO 85% OF SAID ALUMINUM CHLORIDE IS NEUTRALIZED.
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) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |