Patent US2993035A successfully refreshed from Google Patents.
US2993035A
Expired / Lapsed
US
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Polymerization of ethylene
Assignee: Hercules Powder Co
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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 17:01
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)
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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) | 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 |