US3726729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid propellant compositions having a nitrocellulose-hydroxyl-terminated polybutadiene binder and method of preparing the same
Assignee: United States Department of the Army
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Filing: 1965-06-30
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Granted: 1973-04-10
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Expires: 1985-06-30
Abstract
Abstract IMPROVED NITROCELLULOSE-BASE COMPOSITIONS OBTAINED BY INCORPORATING HYDROXYL-TERMINATED POLYBUTADIENE POLYMER IN THE NITROCELLULOSE BINDER. PROPELLANT COMPOSITIONS BASED ON THE RESULTING BINDER EXHIBIT SUBSTANTIALLY IMPROVED STRENGTH AND THERMAL STABILITY.
Inventors
- 👤 E Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:24
CPC Classifications
C; C06; C06B; C06B25/00; C06B25/18; C06B25/24; C06B25/26; C06B45/00; C06B45/04; C06B45/06; C06B45/10
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |