Patent US2579251A successfully refreshed from Google Patents.
US2579251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of aluminum alkoxides
Assignee: British Aluminum Co Ltd
•
Filing: 1949-01-25
•
Granted: 1951-12-18
•
Expires: 1969-01-25
Abstract
No abstract record available.
Inventors
- 👤 Arnold C Coates
- 👤 Saunders Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:39
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/68; C07C29/70; B; B01; B01J; B01J21/00; B01J21/02; B01J21/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
41 words
A METHOD OF PREPARING AN ALUMINUM ALKOXIDE WHICH COMPRISES REACTING TOGETHER AN ALCOHOL IN THE VAPOUR STATE AND A COMMINUTED MATERIAL CONTAINING ALUMINUM IN THE METALLIC STATE IN THE PRESENCE OF ONE OF THE CATALYSTS BORON TRIOXIDE AND ANHYDROUS CUPRIC CHLORIDE.
References Cited (Backward Citations)
US2394848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-17 | 1955-06-18 | 1955-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-17 | 1959-06-18 | 1959-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-17 | 1963-06-18 | 1963-12-18 | $7700.00 | Window Closed / Lapsed |