US3170885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and process of making the same
Assignee: Individual
•
Filing: 1959-02-20
•
Granted: 1965-02-23
•
Expires: 1979-02-20
Abstract
No abstract record available.
Inventors
- 👤 Jacque C Morrell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:25
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/16; B01J27/00; B01J27/14; B01J27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A POLYMERIZATION CATALYST COMPRISING A DRIED MIXTURE OF A PHOSPHORIC ACID AND AN INORGANIC SUPPORT, SAID SUPPORT CONSISTING ESSENTIALLY OF A NATURAL POROUS SILICA MATERIAL SELECTED FROM THE CLASS CONSISTING OF KIESELGUHR, INFUSORIAL EARTH AND DIATOMACEOUS EARTH AND AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF BENTONITE, MONTMORILLONITE AND HALLOYSITE, THE SAID PHOSPHORIC ACID COMPRISING ABOUT 70% TO 85% OF THE SAID MIXTURE, SAID SUPPORT CONTAINING NOT LESS THAN ABOUT 80% OF THE SAID NATURAL 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
115 words
A POLYMERIZATION CATALYST COMPRISING A DRIED MIXTURE OF A PHOSPHORIC ACID AND AN INORGANIC SUPPORT, SAID SUPPORT CONSISTING ESSENTIALLY OF A NATURAL POROUS SILICA MATERIAL SELECTED FROM THE CLASS CONSISTING OF KIESELGUHR, INFUSORIAL EARTH AND DIATOMACEOUS EARTH AND AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF BENTONITE, MONTMORILLONITE AND HALLOYSITE, THE SAID PHOSPHORIC ACID COMPRISING ABOUT 70% TO 85% OF THE SAID MIXTURE, SAID SUPPORT CONTAINING NOT LESS THAN ABOUT 80% OF THE SAID NATURAL 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)
US2018065A
Cited
US2120702A
Cited
US2692242A
Cited
US2704747A
Cited
US2596497A
Cited
US3044964A
Cited
US3050472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |