US2582956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activating clay by roasting with admixed acid salts
Assignee: Houdry Process Corp
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Filing: 1948-02-05
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Granted: 1952-01-22
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Expires: 1968-02-05
Abstract
No abstract record available.
Inventors
- 👤 Jr George R Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:06
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE PROCESS OF TREATING NATURAL HYDROSILICATES OF ALUMINUM WHICH COMPRISES THE STEPS OF ADMIXING SUCH A HYDROSILICATE WITH A SALT OF A MINERAL ACID FURNISHING ACIDIC COMPONENTS WHICH ARE NOT SUBSTANTIALLY VOLATILIZED AS SUCH AT THE TREATING TEMPERATURE HEREINAFTER DEFINED, SAID SALT BEING ONE INCAPABLE OF FORMING ON HEATING AN INSOLUBLE CATION-CONTAINING RESIDUE DETRIMENTAL TO CATALYTIC ACTIVITY; HEATING THE MIXTURE OF HYDROSILICATE AND SALT TO AT LEAST 600* F., BUT NOT IN EXCESS OF 1500* F., AND WASHING THE OBTAINED REACTION PRODUCT TO REMOVE ANY WATER SOLUBLE CONVERSION PRODUCTS THUS FORMED.
Claim 2
Dependent Claim
91 words
THE PROCESS OF TREATING NATURAL HYDROSILICATES OF ALUMINUM WHICH COMPRISES THE STEPS OF ADMIXING SUCH A HYDROSILICATE WITH A SALT OF A MINERAL ACID FURNISHING ACIDIC COMPONENTS WHICH ARE NOT SUBSTANTIALLY VOLATILIZED AS SUCH AT THE TREATING TEMPERATURE HEREINAFTER DEFINED, SAID SALT BEING ONE INCAPABLE OF FORMING ON HEATING AN INSOLUBLE CATION-CONTAINING RESIDUE DETRIMENTAL TO CATALYTIC ACTIVITY; HEATING THE MIXTURE OF HYDROSILICATE AND SALT TO AT LEAST 600* F., BUT NOT IN EXCESS OF 1500* F., AND WASHING THE OBTAINED REACTION PRODUCT TO REMOVE ANY WATER SOLUBLE CONVERSION PRODUCTS THUS FORMED.
References Cited (Backward Citations)
US1590640A
Cited
GB275203A
Cited
US1716828A
Cited
US2018987A
Cited
GB490853A
Cited
US2371890A
Cited
US2306993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |