US2878240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins to solid polymers
Assignee: Universal Oil Products Co
•
Filing: 1956-12-24
•
Granted: 1959-03-17
•
Expires: 1976-12-24
Abstract
No abstract record available.
Inventors
- 👤 Schmerling Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:00
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR POLYMERIZING AN OLEFINIC HYDROCARBON WHICH COMPRISES CONTACTING SAID HYDROCARBON AT A TEMPERATURE OF FROM ABOUT 25* TO ABOUT 250*C. AND AT A PRESSURE FROM ATOMOSPHERIC TO 2.000 ATMOSPHERES WITH A CATALYST COMPRISING A MIXTURE OF TITANIUM DIOXIDE, A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS AND ALKALINE EARTH METALS, AND A HALIDE OF ALUMINUM.
Claim 2
Dependent Claim
60 words
A PROCESS FOR POLYMERIZING AN OLEFINIC HYDROCARBON WHICH COMPRISES CONTACTING SAID HYDROCARBON AT A TEMPERATURE OF FROM ABOUT 25* TO ABOUT 250*C. AND AT A PRESSURE FROM ATOMOSPHERIC TO 2.000 ATMOSPHERES WITH A CATALYST COMPRISING A MIXTURE OF TITANIUM DIOXIDE, A METAL SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METALS AND ALKALINE EARTH METALS, AND A HALIDE OF ALUMINUM.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |