Patent US3113166A successfully refreshed from Google Patents.
US3113166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of ethylene in the presence of a nickel oxide catalyst
Assignee: Monsanto Chemicals Ltd
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Filing: 1961-09-27
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Granted: 1963-12-03
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Expires: 1981-09-27
Abstract
No abstract record available.
Inventors
- 👤 William E Weesner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:48
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PREPARING LIQUID OLEFIN POLYMERS FROM ETHYLENE WHICH COMPRISES CONTACTING ETHYLENE UNDER POLYMERIZATION CONDITIONS, INCLUDING A TEMPERATURE RANGE OF FROM 50*C. TO 150*C., WITH A CATALYST COMPRISING 90 TO 98% OF SILICA ALUMINA, 1 TO 5% NICKEL OIXDE, AND FROM 0.1 TO 3% OF A MEMBER OF THE GROUP CONSISTING OF COPPER OXIDE AND SILVER.
Claim 2
Dependent Claim
57 words
A PROCESS FOR PREPARING LIQUID OLEFIN POLYMERS FROM ETHYLENE WHICH COMPRISES CONTACTING ETHYLENE UNDER POLYMERIZATION CONDITIONS, INCLUDING A TEMPERATURE RANGE OF FROM 50*C. TO 150*C., WITH A CATALYST COMPRISING 90 TO 98% OF SILICA ALUMINA, 1 TO 5% NICKEL OIXDE, AND FROM 0.1 TO 3% OF A MEMBER OF THE GROUP CONSISTING OF COPPER OXIDE AND SILVER.
References Cited (Backward Citations)
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Cited
US2666756A
Cited
US2750261A
Cited
US2881233A
Cited
US2904608A
Cited
US3005033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |