US2907805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of liquid ethylene polymers
Assignee: Hoechst AG
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Filing: 1956-08-14
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Granted: 1959-10-06
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Expires: 1976-08-14
Abstract
No abstract record available.
Inventors
- 👤 Bestian Herbert
- 👤 Prinz Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:04
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS FOR THE PREPARATION OF LIQUID ETHYLENE POLYMERS WHICH COMPRISES THE STEPS OF CONTACTING ETHYLENE AT A TEMPERATURE FROM ABOUT -100* C. TO +100* C., UNDER A PRESSURE FROM ABOUT ATMOSPHERIC TO ABOUT 100 ATMOSPHERES GAUGE WITH A CATAYTIC AMOUNT OF A CATALYST SYSTEM CONTAINING TWO CATALYTICALLY ACTIVE COMPONENTS DISSOLVED INA LIQUID HALOGENATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF HALOGENATED ALIPHATIC HYDROCARBONS AND HALOGENATED HYDROAROMATIC HYDROCARBONS, ONE COMPENENT OF SAID CATALYST BEING A HALOGENCONTAINING ALUMINO-ORGANIC COMPOUND AND THE OTHER BEING A TITANIUM COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
89 words
A PROCESS FOR THE PREPARATION OF LIQUID ETHYLENE POLYMERS WHICH COMPRISES THE STEPS OF CONTACTING ETHYLENE AT A TEMPERATURE FROM ABOUT -100* C. TO +100* C., UNDER A PRESSURE FROM ABOUT ATMOSPHERIC TO ABOUT 100 ATMOSPHERES GAUGE WITH A CATAYTIC AMOUNT OF A CATALYST SYSTEM CONTAINING TWO CATALYTICALLY ACTIVE COMPONENTS DISSOLVED INA LIQUID HALOGENATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF HALOGENATED ALIPHATIC HYDROCARBONS AND HALOGENATED HYDROAROMATIC HYDROCARBONS, ONE COMPENENT OF SAID CATALYST BEING A HALOGENCONTAINING ALUMINO-ORGANIC COMPOUND AND THE OTHER BEING A TITANIUM COMPOUND OF THE GENERAL FORMULA
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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) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |