US2993035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene
Assignee: Hercules Powder Co
•
Filing: 1956-10-24
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Granted: 1961-07-18
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Expires: 1976-10-24
Abstract
No abstract record available.
Inventors
- 👤 Donald L Christman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:03
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS OF POLYMERIZING ETHYLENICALLY UNSATURATED HYDROCARBONS WHICH COMPRISES CONTACTING AT LEAST ONE ETHYLENICALLY UNSATURATED HYDROCARBON CONTAINING FROM 2 TO 8 CARBON ATOMS PER MOLECULE WITH A CATALYST FORMED BY MIXING, IN A MOLAR RATIO OF FROM ABOUT 1:0.3 TO ABOUT 1:10 AND AS THE SOLE COMPONENTS OF THE CATALYST, A COMPOUND OF A GROUP I-B METAL OF THE PERIODICAL TABLE WITH AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYLALUMINUM COMPOUNDS, ALUMINUM HYDRIDE AND ALKALI METAL ALUMINUM HYDRIDES.
Claim 2
Dependent Claim
80 words
THE PROCESS OF POLYMERIZING ETHYLENICALLY UNSATURATED HYDROCARBONS WHICH COMPRISES CONTACTING AT LEAST ONE ETHYLENICALLY UNSATURATED HYDROCARBON CONTAINING FROM 2 TO 8 CARBON ATOMS PER MOLECULE WITH A CATALYST FORMED BY MIXING, IN A MOLAR RATIO OF FROM ABOUT 1:0.3 TO ABOUT 1:10 AND AS THE SOLE COMPONENTS OF THE CATALYST, A COMPOUND OF A GROUP I-B METAL OF THE PERIODICAL TABLE WITH AN ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYLALUMINUM COMPOUNDS, ALUMINUM HYDRIDE AND ALKALI METAL ALUMINUM HYDRIDES.
References Cited (Backward Citations)
US2905645A
Cited
US2888448A
Cited
US2824089A
Cited
US2827447A
Cited
US2886561A
Cited
US2909511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |