US3342750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions containing stable aluminum phosphate gel and methods of making and using same
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-04-01
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Granted: 1967-09-19
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Expires: 1985-04-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth K Kearby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:11
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/36; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A METHOD OF MAKING A DRY ALUMINUM PHOSPHATE GEL WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF ALUMINUM CHLORIDE AND PHOSPHORIC ACID WITH ETHYLENE OXIDE WHILE STIRRING THE MIXTURE, THE AMOUNT OF THE ALUMINUM CHLORIDE BEING AT LEAST STOICHIOMETRICALLY EQUIVALENT TO THE AMOUNT OF PHOSPHORIC ACID AND THE AMOUNT OF THE ETHYLENE OXIDE BEING SUFFICIENT TO PRODUCE GELLING, PERMITTING THE MIXTURE TO SET TO A CLEAR VIBRANT TRANSPARENT TRUE COLLIDAL HYDROGEL, EXTRACTING THE HYDROGEL WITH AN ORGANIC WATER SOLUBLE EXTRACTING AGENT, DRYING THE EXTRACTED HYDROGEN AND THEN CALCINING THE DRIED AND EXTRACTED HYDROGEL AT A CALCINATION TEMPERATURE BETWEEN ABOUT 1000*F. AND ABOUT 1400*F. FOR A PERIOD OF TIME BETWEEN ABOUT 3 HOURS AND ABOUT 48 HOURS TO FORM A DRY AMORPHOUS ALUMINUM PHOSPHATE GEL HAVING A SURFACE AREA OF BETWEEN ABOUT 250 AND 600 M.2/GRAM.
Claim 2
Independent Claim
134 words
A METHOD OF MAKING A DRY ALUMINUM PHOSPHATE GEL WHICH COMPRISES REACTING AN AQUEOUS SOLUTION OF ALUMINUM CHLORIDE AND PHOSPHORIC ACID WITH ETHYLENE OXIDE WHILE STIRRING THE MIXTURE, THE AMOUNT OF THE ALUMINUM CHLORIDE BEING AT LEAST STOICHIOMETRICALLY EQUIVALENT TO THE AMOUNT OF PHOSPHORIC ACID AND THE AMOUNT OF THE ETHYLENE OXIDE BEING SUFFICIENT TO PRODUCE GELLING, PERMITTING THE MIXTURE TO SET TO A CLEAR VIBRANT TRANSPARENT TRUE COLLIDAL HYDROGEL, EXTRACTING THE HYDROGEL WITH AN ORGANIC WATER SOLUBLE EXTRACTING AGENT, DRYING THE EXTRACTED HYDROGEN AND THEN CALCINING THE DRIED AND EXTRACTED HYDROGEL AT A CALCINATION TEMPERATURE BETWEEN ABOUT 1000*F. AND ABOUT 1400*F. FOR A PERIOD OF TIME BETWEEN ABOUT 3 HOURS AND ABOUT 48 HOURS TO FORM A DRY AMORPHOUS ALUMINUM PHOSPHATE GEL HAVING A SURFACE AREA OF BETWEEN ABOUT 250 AND 600 M.2/GRAM.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |