US4797168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azidodinitro propellants
Assignee: Boeing North American Inc
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Filing: 1986-08-11
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Granted: 1989-01-10
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Expires: 2006-08-11
Abstract
Abstract A liquid propellant comprising a mixture of an energetic azido fuel such as 1,1,1-azidodinitroethane, a diluent such as methanol and azidoethanol and mixtures thereof.
Inventors
- 👤 Joseph E. Flanagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:09
CPC Classifications
C; C06; C06B; C06B25/00; Y; Y10; Y10S; Y10S149/00; Y10S149/119
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A desensitized liquid monopropellant comprising from about 70 to about 90 weight percent 1,1,1-azidodinitroethane, and from about 10 to about 30 weight percent of a desensitizing diluent selected from the group consisting of N 3 C 2 H 4 OH, (N 3 CH 2 ) 2 CHOH, N 3 C(NO 2 ) 2 C 3 H 6 OH, O 2 NN(CH 2 CH 2 N 3 ) 2 , N 3 C(NO 2 ) 2 C 3 H 6 N 3 , and mixtures thereof.
Claim 2
Dependent Claim
85 words
A desensitized liquid monopropellant comprising from about 70 to about 90 weight percent 1,1,1-azidodinitroethane, and from about 10 to about 30 weight percent of a desensitizing diluent selected from the group consisting of N 3 C 2 H 4 OH, (N 3 CH 2 ) 2 CHOH, N 3 C(NO 2 ) 2 C 3 H 6 OH, O 2 NN(CH 2 CH 2 N 3 ) 2 , N 3 C(NO 2 ) 2 C 3 H 6 N 3 , and mixtures thereof.
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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |