US3733349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorocarbon cyanates
Assignee: 3M Co
•
Filing: 1971-03-30
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Granted: 1973-05-15
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Expires: 1991-03-30
Abstract
Abstract METHYLOL-TERMINATED FLUOROCARBONS ARE REACTED WITH CYANOGEN HALIDES TO PRODUCE FLUOROCARBON CYANATES WHICH CAN BE POLYMERIZED TO PRODUCE POLYFLUOROCYANURATES HAVING CHEMICAL RESISTANCE AND THERMAL STABILITY AND USEFUL IN MAKING SHAPED PLASTIC OR ELASTOMERIC ARTICLES.
Inventors
- 👤 B Loudas
- 👤 H Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:54
CPC Classifications
C; C07; C07C; C07C261/00; C07C261/02; C08; C08G; C08G73/00; Y; Y10; Y10S; Y10S521/00; Y10S521/902
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |