US3757520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic gas generation using a hydrazine with an oxidizer on an inert substrate
Assignee: United States Department of the Army
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Filing: 1967-07-05
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Granted: 1973-09-11
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Expires: 1987-07-05
Abstract
Abstract A gas generation scheme in which an inert porous support material, substrate or carrier, is heated sufficiently to maintain decomposition of a liquid monopropellant by a hypergolic or spontaneous exothermic reaction between the liquid monopropellant and a suitable oxidizing agent.
Inventors
- 👤 J Murfree
- 👤 B Sandlin
- 👤 W Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:21
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/68; C; C06; C06D; C06D5/00; C06D5/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
14 words
The process of claim 1 wherein said liquid monopropellant is hydrazine, 1,1-dimethylhydrazine or monomethylyhdrazine.
Claim 2
Dependent Claim
20 words
The process of claim 1 wherein said inert porous support material is activated charcoal, silica gel, alumina or porous firebrick.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein said liquid monopropellant is hydrazine, 1,1-dimethylhydrazine or monomethylhydrazine and said inert porous support material is activated charcoal, silica gel, alumina or porous firebrick.
Claim 4
Dependent Claim
13 words
The process of claim 1 wherein said liquid monopropellant is hydrazine or monomethylhydrazine.
Claim 5
Dependent Claim
28 words
The process of claim 1 wherein said liquid monopropellant is hydrazine or monomethylhydrazine and said inert porous support material is activated charcoal, silica gel, alumina or porous firebrick.
Claim 6
Dependent Claim
28 words
The process of claim 1 wherein said liquid monopropellant is hydrazine, 1,1-dimethylhydrazine or monomethylhydrazine and said oxidizing agent is potassium dichromate, iodic acid, iodic anhydride or calcium permanganate.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |