Patent US3147161A successfully refreshed from Google Patents.
US3147161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellant composition cured with aziridinyl compounds
Assignee: 3M Co
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Filing: 1961-06-19
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Granted: 1964-09-01
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Expires: 1981-06-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Abere
- 👤 Lowrey Robert Dean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:20
CPC Classifications
C; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A SOLID COMPOSITE PROPELLANT FOR JET PROPULSION MOTORS CONSISTING ESSENTIALLY OF A MIXTURE OF FROM ABOUT 10 TO ABOUT 60 PERCENT OF A POLYMER COMPRISING A CARBOXYLTERMINATED PREPOLYMER CONSISTING OF A REACTION PRODUCT OF ADIPIC ACID, DIETHYLENE GLYCOL AND TRIMETHYLOL PROPANE CONTAINING AN AVERAGE OF MORE THAN 2 CARBOXYL GROUPS PER MOLECULE, CURED BY HEATING AT A TEMPERATURE ABOVE ABOUT 10*C. WITH AN AMOUNT RANGING FROM THE STOICHIOMETRIC EQUIVALENT AMOUNT UP TO A 100 PERCENT EXCESS OF THE STOICHIOMETRIC AMOUNT OF N,N''-BIS-1,2-EHTYLENEISOSEBACAMIDE; AND FROM ABOUT 90 TO ABOUT 40 PERCENT OF FINELY DIVIDED AMMONIUM NITRATE.
Claim 2
Dependent Claim
95 words
A SOLID COMPOSITE PROPELLANT FOR JET PROPULSION MOTORS CONSISTING ESSENTIALLY OF A MIXTURE OF FROM ABOUT 10 TO ABOUT 60 PERCENT OF A POLYMER COMPRISING A CARBOXYLTERMINATED PREPOLYMER CONSISTING OF A REACTION PRODUCT OF ADIPIC ACID, DIETHYLENE GLYCOL AND TRIMETHYLOL PROPANE CONTAINING AN AVERAGE OF MORE THAN 2 CARBOXYL GROUPS PER MOLECULE, CURED BY HEATING AT A TEMPERATURE ABOVE ABOUT 10*C. WITH AN AMOUNT RANGING FROM THE STOICHIOMETRIC EQUIVALENT AMOUNT UP TO A 100 PERCENT EXCESS OF THE STOICHIOMETRIC AMOUNT OF N,N''-BIS-1,2-EHTYLENEISOSEBACAMIDE; AND FROM ABOUT 90 TO ABOUT 40 PERCENT OF FINELY DIVIDED AMMONIUM NITRATE.
References Cited (Backward Citations)
US3028271A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |