US2691668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of trialkylaluminium compounds
Assignee: ZIEGLER AG
•
Filing: 1953-05-12
•
Granted: 1954-10-12
•
Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Karl
- 👤 Zosel Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:43
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/064; C07F5/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
PROCESS FOR THE PRODUCTION OF ALUMINIUM TRIALKYLS WHICH COMPRISES HEATING AN ALKYL ALUMINIUM HALIDE WITH A FINELY DIVIDED METAL CONTAINING MAGNESIUM AT A TEMPERATURE OF UP TO 180* C.
Claim 2
Dependent Claim
29 words
PROCESS FOR THE PRODUCTION OF ALUMINIUM TRIALKYLS WHICH COMPRISES HEATING AN ALKYL ALUMINIUM HALIDE WITH A FINELY DIVIDED METAL CONTAINING MAGNESIUM AT A TEMPERATURE OF UP TO 180* C.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-11 | 1958-04-12 | 1958-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-11 | 1962-04-12 | 1962-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-11 | 1966-04-12 | 1966-10-12 | $7700.00 | Window Closed / Lapsed |