US2929697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellants for rockets and process of making
Assignee: Individual
•
Filing: 1947-10-30
•
Granted: 1960-03-22
•
Expires: 1967-10-30
Abstract
No abstract record available.
Inventors
- 👤 James W Perry
- 👤 William R Johnson
- 👤 Joseph H Frazer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:22
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C06B21/00; C06B21/0033; C06B21/0041; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE PROCESS OF PREPARING A PROPELLANT WHICH COMPRISES FORMING, SUBSTANTIALLY IN THE ABSENCE OF VOLATILE SOLVENTS, AN INTIMATE MIXTURE COMPRISING FINELY DIVIDED POTASSIUM PERCHLORATE, FINELY DIVIDED GRAPHITE, FINLEY DIVIDED TITANIUM, A HIGH MOLECULAR WEIGHT COPOLYMER OF VINYL CHLORICE AND VINYL ACETATE, AND THE PHOSPHORIC ACID ESTER OF MONOBUTYL ETHER OF ETHYLENE GLYCOL AS A PLASTICIZER FOR SAID COPOLYMER, THE FORMING OF SAID MIXTURE BEING CARRIES OUT AT A TEMPERATURE WHICH IS SUFFICIENTLY LOW SO THAT THE SAID PLASTICIZER AND THE SAID COPOLYMER DO NOT UNITE PHYSICALLY IN THE MIXTURE, AND THEREAFTER SUBJECTING THE SAID MIXTURE TO HIGH PRESSURE WHILE HEATED TO A TEMPERATURE AT WHICH THE SAID PLASTICIZER AND SAID COPOLYMER ENTER INTO PHYSICAL COMBINATION.
Claim 2
Dependent Claim
115 words
THE PROCESS OF PREPARING A PROPELLANT WHICH COMPRISES FORMING, SUBSTANTIALLY IN THE ABSENCE OF VOLATILE SOLVENTS, AN INTIMATE MIXTURE COMPRISING FINELY DIVIDED POTASSIUM PERCHLORATE, FINELY DIVIDED GRAPHITE, FINLEY DIVIDED TITANIUM, A HIGH MOLECULAR WEIGHT COPOLYMER OF VINYL CHLORICE AND VINYL ACETATE, AND THE PHOSPHORIC ACID ESTER OF MONOBUTYL ETHER OF ETHYLENE GLYCOL AS A PLASTICIZER FOR SAID COPOLYMER, THE FORMING OF SAID MIXTURE BEING CARRIES OUT AT A TEMPERATURE WHICH IS SUFFICIENTLY LOW SO THAT THE SAID PLASTICIZER AND THE SAID COPOLYMER DO NOT UNITE PHYSICALLY IN THE MIXTURE, AND THEREAFTER SUBJECTING THE SAID MIXTURE TO HIGH PRESSURE WHILE HEATED TO A TEMPERATURE AT WHICH THE SAID PLASTICIZER AND SAID COPOLYMER ENTER INTO PHYSICAL COMBINATION.
References Cited (Backward Citations)
US2165263A
Cited
GB191502172A
Cited
US2012866A
Cited
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Cited
US2171379A
Cited
GB570075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |