Patent US2844615A successfully refreshed from Google Patents.
US2844615A
Expired / Lapsed
US
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Process for making complex compounds from aluminium hydrocarbons and alkali fluorides
Assignee: Individual
•
Filing: 1953-09-09
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Granted: 1958-07-22
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Expires: 1973-09-09
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Karl
- 👤 Koster Roland
- 👤 Lehmkuhl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:25
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/26; B01J31/02; B01J31/12; B01J31/14; B01J31/143; C; C07; C07F; C07F5/00; C07F5/06; C07F5/061; C07F5/062; C08; C08F; C08F10/00; B01J27/00; B01J27/06; B01J27/08; B01J27/12; B01J27/138; B01J31/16; B01J31/18; B01J31/1805; B01J31/22; B01J31/2204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A NEW COMPLEX COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
7 words
A NEW COMPLEX COMPOUND 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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |