US3389190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst and polymerisation process using said catalyst
Assignee: BP PLC
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Filing: 1961-12-19
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Granted: 1968-06-18
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Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Geoffrey Winton Alderson
- 👤 James Keith Hambling
- 👤 Alan Arthur Yeo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:51
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/12; C07C11/173; C07C11/18; B; B01; B01J; B01J21/00; B01J21/02; B01J23/00; B01J23/02; B01J23/04; B01J27/00; B01J27/24; C07C2/00; C07C2/02; C07C2/04; C07C2/06; C07C2/08; C07C2/24; C07C2523/00; C07C2523/02; C07C2523/04; C07C2527/00; C07C2527/20; C07C2527/232
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
39 words
A PROCESS FOR POLYMERISING AN OLEFINIC HYDROCARBON WHICH COMPRISES CONTACTING AN OLEFIN HAVING AT LEAST 3 CARBON ATOMS PER MOLECULE WITH A CATALYST CONSISTING ESSENTIALLY OF 1 TO 20% BY WEIGHT OF ELEMENTAL SODIUM DISPERSED AN ANHYDROUS POTASSIUM CARBONATE.
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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) | 1971-06-18 | 1971-12-18 | 1972-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-18 | 1975-12-18 | 1976-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-18 | 1979-12-18 | 1980-06-18 | $7700.00 | Window Closed / Lapsed |