Patent US2809868A successfully refreshed from Google Patents.
Patent US2997376A successfully refreshed from Google Patents.
US2997376A
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Solid composite propellant containing polysulfide rubber fuel binder
Assignee: California Institute Research Foundation
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Filing: 1946-12-05
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Granted: 1961-08-22
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Expires: 1966-12-05
Abstract
No abstract record available.
Inventors
- 👤 Charles E Bartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:09
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A SOLID, RESILIENT MECHANICAL SHOCK RESISTANT ROCKET MOTOR PROPELLANT CAPABLE OF SUSTAINED COMBUSTION, CONSISTING OF: AN OXIDIZER OF THE GROUP CONSISTING OF POTASSIUM PERCHLORATE, POTASSIUM NITRATE, AMMONIUM PERCHLORATE AND AMMONIUM NITRATE, AND A VULCANIZED COMPOSITION OF POLYSULFIDE LIQUID, PRIOR TO VULCANIZING, AT AMBIENT TEMPERATURES AND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
49 words
A SOLID, RESILIENT MECHANICAL SHOCK RESISTANT ROCKET MOTOR PROPELLANT CAPABLE OF SUSTAINED COMBUSTION, CONSISTING OF: AN OXIDIZER OF THE GROUP CONSISTING OF POTASSIUM PERCHLORATE, POTASSIUM NITRATE, AMMONIUM PERCHLORATE AND AMMONIUM NITRATE, AND A VULCANIZED COMPOSITION OF POLYSULFIDE LIQUID, PRIOR TO VULCANIZING, AT AMBIENT TEMPERATURES AND HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US85482A
Cited
US393634A
Cited
US625634A
Cited
US1363095A
Cited
US1529322A
Cited
US1700085A
Cited
US2004436A
Cited
US2067213A
Cited
US2363569A
Cited
US2410801A
Cited
US2466963A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |