US3213035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorous containing polymerization catalyst with hydrated gel additive
Assignee: Individual
•
Filing: 1962-07-16
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Granted: 1965-10-19
•
Expires: 1982-07-16
Abstract
No abstract record available.
Inventors
- 👤 Jacque C Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:20
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A POLYMERIZATION CATALYST COMPRISING A DRIED MIXTURE OF PHOSPHORIC ACID AND AN INORGANIC SUPPORT, SAID SUPPORT CONSISTING ESSENTIALLY OF A NATURAL POROUS SILICA MATERIAL SELECTED FROM A GROUP CONSISTING OF KIESELGUHR, INFUSORIAL EARTH AND DIATOMACEOUS EARTH AND AN ADDITIVE FORMED FROM COMBINATIONS OF HYDRATED SILICA AND ALUMINA GELS, EACH BEING PRESENT IN THE ADDITIVE MIXTURE IN QUANTITY IN THE RANGE OF 5 TO 95*, THE SAID PHOSPHORIC ACID COMPRISING ABOUT 70% TO 85% OF THE SAID MIXTURE, SAID SUPPORT CONTAINING NOT LESS THAN ABOUT 80% OF THE SAID POROUS SILICA MATERIAL AND LESS THAN ABOUT 20% AND MORE THAN 1% OF SAID ADDITIVE, SAID SUPPORT BEING FURTHER CHARACTERIZED IN THAT THE SAID POROUS SILICA MATERIAL TOGETHER WITH SAID ADDITIVE COMPRISES NOT MORE THAN ABOUT 30% OF THE MIXTURE.
Claim 2
Dependent Claim
128 words
A POLYMERIZATION CATALYST COMPRISING A DRIED MIXTURE OF PHOSPHORIC ACID AND AN INORGANIC SUPPORT, SAID SUPPORT CONSISTING ESSENTIALLY OF A NATURAL POROUS SILICA MATERIAL SELECTED FROM A GROUP CONSISTING OF KIESELGUHR, INFUSORIAL EARTH AND DIATOMACEOUS EARTH AND AN ADDITIVE FORMED FROM COMBINATIONS OF HYDRATED SILICA AND ALUMINA GELS, EACH BEING PRESENT IN THE ADDITIVE MIXTURE IN QUANTITY IN THE RANGE OF 5 TO 95*, THE SAID PHOSPHORIC ACID COMPRISING ABOUT 70% TO 85% OF THE SAID MIXTURE, SAID SUPPORT CONTAINING NOT LESS THAN ABOUT 80% OF THE SAID POROUS SILICA MATERIAL AND LESS THAN ABOUT 20% AND MORE THAN 1% OF SAID ADDITIVE, SAID SUPPORT BEING FURTHER CHARACTERIZED IN THAT THE SAID POROUS SILICA MATERIAL TOGETHER WITH SAID ADDITIVE COMPRISES NOT MORE THAN ABOUT 30% OF THE MIXTURE.
References Cited (Backward Citations)
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Cited
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |