US2835689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminum trialkyls and aluminum alkyl hydrides
Assignee: ZIEGLER AG
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Filing: 1955-07-27
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Granted: 1958-05-20
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Expires: 1975-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Karl
- 👤 Gellert Hans-Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:29
CPC Classifications
C; C08; C08F; C08F10/00; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
IN A PROCESS FOR THE PRODUCTION OF ALUMINUM HYDROCARBONS THE IMPROVEMENT WHICH COMPRISES CONTACTING AN ALUMINUM HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
27 words
IN A PROCESS FOR THE PRODUCTION OF ALUMINUM HYDROCARBONS THE IMPROVEMENT WHICH COMPRISES CONTACTING AN ALUMINUM HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE FORMULA
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |