US3746738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon containing polyazimides
Assignee: Union Carbide Corp
•
Filing: 1972-03-28
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Granted: 1973-07-17
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Expires: 1992-03-28
Abstract
Abstract POLYAZAMIDES CONTAINNING SILICON MOITIES IN THE POLYMER BACKBONE AND/OR PENDANT THEREFROM WHICH ARE USEFUL AS FIBER SIZERS, SURFACTANTS, COUPLING AGENTS, AND THE LIKE.
Inventors
- 👤 E Pepe
- 👤 J Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:33
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/40; B32B21/00; B32B21/04; B32B21/08; B32B27/34; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08; C08G; C08G69/00; C08G69/42; C08G69/48; C08G77/00; C08G77/42; C08G77/452; C08G77/455
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |