Patent US2839556A successfully refreshed from Google Patents.
US2839556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aluminum hydrocarbons
Assignee: ZIEGLER AG
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Filing: 1953-07-27
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Granted: 1958-06-17
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Karl
- 👤 Koester Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:53
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/064; C01; C01F; C01F7/00; C01F7/48; C01F7/50; C01F7/54; C07F5/062; F; F02; F02B; F02B3/00; F02B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
PROCESS FOR THE PRODUCTION OF ORGANIC ALUMINUM COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF LOWER ALUMINUM TRIALKYLS AND ALUMINUM TRIPHENYL, WHICH COMPRISES HEATING AN ORGANIC ALUMINUM FLUORIDE SELECTED FROM THE GROUP CONSISTING OF LOWER ALUMINUM ALKYL FLUORIDES AND ALUMINUM PHENYL FLUORIDES WITH AN ALKALI METAL FLUORIDE AND RECOVERING AN ALKALI ALUMINUM FLUORIDE AND AN ORGANIC ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF LOWER ALUMINUM TRIALKYLS AND ALUMINUM TRIPHENYL.
Claim 2
Dependent Claim
69 words
PROCESS FOR THE PRODUCTION OF ORGANIC ALUMINUM COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF LOWER ALUMINUM TRIALKYLS AND ALUMINUM TRIPHENYL, WHICH COMPRISES HEATING AN ORGANIC ALUMINUM FLUORIDE SELECTED FROM THE GROUP CONSISTING OF LOWER ALUMINUM ALKYL FLUORIDES AND ALUMINUM PHENYL FLUORIDES WITH AN ALKALI METAL FLUORIDE AND RECOVERING AN ALKALI ALUMINUM FLUORIDE AND AN ORGANIC ALUMINUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF LOWER ALUMINUM TRIALKYLS AND ALUMINUM TRIPHENYL.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |