US3148159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of acid activating mineral clays
Assignee: GAF Chemicals Corp
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Filing: 1962-03-20
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Granted: 1964-09-08
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Expires: 1982-03-20
Abstract
No abstract record available.
Inventors
- 👤 John A Hodgkiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:39
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE PROCESS OF PREPARING ANACIDIC ACLAY CATALYST OF THE SILICA-ALUMINA TYPE WHICH COMPRISES CONTACTING A MIXTURE OF 5 TO 100 PARTS BY WEIGHT OF A RAW CLAY OF THE SILICA-ALUMIA TYPE AND 100 PARTS BY WEIGHT OF A PHENOL HAVING FROM 6 TO 25 CARBON ATOMS AND FREE FROM BASIC SUBSTITUENTS IN THE PRESENCE OF FROM 4 TO 20 PARTS BY WEIGHT OF AN ACID SELECTED FROM THE CLASS CONSISTING OF MINERAL ACID, POLYHALOACETIC ACID, BENZENE SULFONIC AND XYLENE DISULFONIC ACID AT A TEMPERATURE RANGING FROM AMBIENT TO 190*C.
Claim 2
Dependent Claim
89 words
THE PROCESS OF PREPARING ANACIDIC ACLAY CATALYST OF THE SILICA-ALUMINA TYPE WHICH COMPRISES CONTACTING A MIXTURE OF 5 TO 100 PARTS BY WEIGHT OF A RAW CLAY OF THE SILICA-ALUMIA TYPE AND 100 PARTS BY WEIGHT OF A PHENOL HAVING FROM 6 TO 25 CARBON ATOMS AND FREE FROM BASIC SUBSTITUENTS IN THE PRESENCE OF FROM 4 TO 20 PARTS BY WEIGHT OF AN ACID SELECTED FROM THE CLASS CONSISTING OF MINERAL ACID, POLYHALOACETIC ACID, BENZENE SULFONIC AND XYLENE DISULFONIC ACID AT A TEMPERATURE RANGING FROM AMBIENT TO 190*C.
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) | 1967-09-08 | 1968-03-09 | 1968-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-08 | 1972-03-09 | 1972-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-08 | 1976-03-09 | 1976-09-08 | $7700.00 | Window Closed / Lapsed |