US4032553A
Expired / Lapsed
US
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Aluminium hydride oligomer derivatives and process for the preparation thereof
Assignee: SnamProgetti SpA
•
Filing: 1975-07-01
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Granted: 1977-06-28
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Expires: 1995-07-01
Abstract
Abstract The present invention provides novel oligomer derivatives of aluminum hydride having the general formula: (XAlNR).sub.x (XYAl).sub.y (NHR).sub.y.
Inventors
- 👤 Giovanni Dozzi
- 👤 Giovanni Perego
- 👤 Carlo Busetto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:32
CPC Classifications
C; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
12 words
A compound of the formula of FIG. 1 wherein R is tert-butyl.
Claim 2
Dependent Claim
12 words
A compound of the formula of FIG. 1 wherein R is tert-butyl.
Claim 3
Dependent Claim
8 words
A compound of the formula of FIG. 2.
Claim 4
Dependent Claim
8 words
A compound of the formula of FIG. 2.
Claim 5
Dependent Claim
12 words
A compound of the formula of FIG. 3 wherein R is isopropyl.
Claim 6
Dependent Claim
12 words
A compound of the formula of FIG. 3 wherein R is isopropyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |