US3669930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermally stable thermosetting resin
Assignee: Toray Industries Inc
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Filing: 1969-11-05
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Granted: 1972-06-13
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Expires: 1989-11-05
Abstract
Abstract The present invention provides a thermosetting resin excellent in thermal stability, mechanical properties and electrical properties which is obtained by reacting dimaleimide with an amide in molten state.
Inventors
- 👤 Tomohiko Asahara
- 👤 Naoya Yoda
- 👤 Muneyoshi Minami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:17
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |