US3658764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linked resins
Assignee: Rhone Poulenc SA
•
Filing: 1970-10-13
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Granted: 1972-04-25
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Expires: 1990-10-13
Abstract
Abstract CROSS-LINKED RESINS OF GOOD THERMAL STABILITY USEFUL INTER ALIA FOR MAKING MULTICELLUALR MATERIALS, FOR BONDING METALS, AND FOR MAKING LAMINATES AND MOULDED ARTICLES ARE MADE BY REACTING, E.G. BY HEATING TOGETHER, AN UNSATURATED BIS-IMIDE WITH A DIPRIMARY DIAMINE IN A RATIO OF 1.2:1 TO 50:1.
Inventors
- 👤 Michel Bargain
- 👤 Andre Combet
- 👤 Pierre Grosjean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:57
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/10; H05B3/18; B; B32; B32B; B32B27/00; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/121; C08G73/122; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31721
Claims Analysis
Total Claims: 0
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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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |