US3417119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of quaternary ammonium aluminum hydrides
Assignee: ATK Launch Systems LLC
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Filing: 1963-05-09
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Granted: 1968-12-17
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Ehrlich Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:08
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
THE PROCESS FOR PREPARING QUATERNARY AMMONIUM ALUMINOHYDRIDES COMPRISING CONTACTING AN ALKALI METAL ALUMINUM HYDRIDE WITH A QUATERNARY AMMONIUM THIOARYLOXIDE OF THE FORMULA:
Claim 2
Dependent Claim
22 words
THE PROCESS FOR PREPARING QUATERNARY AMMONIUM ALUMINOHYDRIDES COMPRISING CONTACTING AN ALKALI METAL ALUMINUM HYDRIDE WITH A QUATERNARY AMMONIUM THIOARYLOXIDE OF THE FORMULA:
References Cited (Backward Citations)
US3072698A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |