US3105053A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alumina hydrosol and gel
Assignee: ExxonMobil Oil Corp
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Filing: 1955-02-21
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Granted: 1963-09-24
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Robert H Cramer
- 👤 Albert B Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J20/00; B01J20/02; B01J20/06; B01J20/08; C; C01; C01F; C01F7/00; C01F7/02; C01F7/04; C01F7/14; C01F7/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR PREPARING AN ALUMINA HYDROSOL, WHICH COMPRISES INTIMATELY ADMIXING AQUEOUS SOLUTIONS OF AN ALKALI METAL ALUMINATE, A HYDROXYCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC, GLYCOLIC, TARTARIC AND LACTIC ACIDS AND AN INORHANIC WATER-SOLUBLE SALT CONTAINING ALUMINUM AS THE CATION IN SUCH PROPORTION THAT THE RATIO EQUIVALENTS OF ALUMINUM SALT ANION TO ALKALI METAL IS BETWEEN ABOUT 0.005 AND ABOUT 0.2 AND THE RATIO EQUIVALENTS OF HYDROXYCARBOXYLIC ACID TO ALUMINUM IS WITHIN THE AREA ABCD OF THE ACCOMPANYING DRAWING.
Claim 2
Dependent Claim
82 words
A PROCESS FOR PREPARING AN ALUMINA HYDROSOL, WHICH COMPRISES INTIMATELY ADMIXING AQUEOUS SOLUTIONS OF AN ALKALI METAL ALUMINATE, A HYDROXYCARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF CITRIC, GLYCOLIC, TARTARIC AND LACTIC ACIDS AND AN INORHANIC WATER-SOLUBLE SALT CONTAINING ALUMINUM AS THE CATION IN SUCH PROPORTION THAT THE RATIO EQUIVALENTS OF ALUMINUM SALT ANION TO ALKALI METAL IS BETWEEN ABOUT 0.005 AND ABOUT 0.2 AND THE RATIO EQUIVALENTS OF HYDROXYCARBOXYLIC ACID TO ALUMINUM IS WITHIN THE AREA ABCD OF THE ACCOMPANYING DRAWING.
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |