US3207812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for copolymerising olefins
Assignee: BP PLC
•
Filing: 1962-03-05
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Granted: 1965-09-21
•
Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Hambling James Keith
- 👤 Alderson Geoffrey Winton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:35
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: 2
Claim 1
Independent Claim
29 words
A PROCESS FOR THE PRODUCTION OF HEXENES, COMPRISING: CONTACTING A MIXTURE CONSISTING ESSENTIALLY OF ETHYLENE AND A BUTENE WITH A CATALYST PREPARED BY DISPERSING SODIUM METAL ON POTASSIUM CARBONATE.
Claim 2
Dependent Claim
29 words
A PROCESS FOR THE PRODUCTION OF HEXENES, COMPRISING: CONTACTING A MIXTURE CONSISTING ESSENTIALLY OF ETHYLENE AND A BUTENE WITH A CATALYST PREPARED BY DISPERSING SODIUM METAL ON POTASSIUM CARBONATE.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |