US3792003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxy-terminated polybutadiene,diisocyanate and triol composition
Assignee: Individual
•
Filing: 1971-09-29
•
Granted: 1974-02-12
•
Expires: 1991-09-29
Abstract
Abstract AN ELASTOMERIC COMPOSITION IS FORMED BY MIXING A HYDROXY TERMINATED POLYBUTADIENE FORMED BY REACTING A CARBOXYL TERMINATED POLYBUTALIENE WITH A MONO-EPOXIDE WITH A DIISOCYANATE AND A POLYOXALKYLENE TRIOL. THE COMPOSITION IS USEFUL AS A BINDER IN FORMING A CASTABLE PROPELLANT. IT ALSO MAY BE USED AS A LOW TEMPERATURE STRUCTURAL MATERIAL OR AS AN INSULATOR.
Inventors
- 👤 G Duchesne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:35
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/67; C08G18/69; C08G18/694; C08G18/698
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |