US3552946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aluminum powder
Assignee: Ethyl Corp
•
Filing: 1969-09-02
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Granted: 1971-01-05
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Expires: 1989-09-02
Abstract
Abstract PURE ALUMINUM POWDER IS PREPARED BY PYROLYZING AN AMINE ALANE SUCH AS THE TRIMETHYLAMINE COMPLEX OF ALUMINUM HYDRIDE IN SOLUTION.
Inventors
- 👤 Gottfried J Brendel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:30
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/30; C; C22; C22B; C22B21/00; C22B21/0038; C22B21/0053
Claims Analysis
Total Claims: 0
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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) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |