US4440687A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azido nitramino ethers
Assignee: United States Department of the Air Force
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Filing: 1982-04-08
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Granted: 1984-04-03
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Expires: 2002-04-08
Abstract
Abstract This invention involves the synthesis of a novel family of azido nitramino ethers and their utilization as energetic plasticizers for advanced solid propellant compositions. They include the novel compounds bis (2-azidoethoxymethyl) nitramine and 1,12-diazido-3,10-dioxa-5,8-dinitrazadodecane.
Inventors
- 👤 Edward F. Witucki
- 👤 Joseph E. Flanagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:36
CPC Classifications
C; C07; C07C; C07C247/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
As a new compound, bis(2-azidoethoxymethyl) nitramine.
Claim 2
Dependent Claim
6 words
As a new compound, bis(2-azidoethoxymethyl) nitramine.
Claim 3
Dependent Claim
5 words
As a new compound, 1,12-diazido-3,10-dioxa-5,8-dinitrazadodecane.
Claim 4
Dependent Claim
5 words
As a new compound, 1,12-diazido-3,10-dioxa-5,8-dinitrazadodecane.
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) | 1987-04-03 | 1987-10-03 | 1988-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-03 | 1991-10-03 | 1992-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-03 | 1995-10-03 | 1996-04-03 | $7700.00 | Window Closed / Lapsed |