US3218270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linking of polymers from perfluorodiamidines and perfluoromonoamidines
Assignee: Individual
•
Filing: 1963-08-27
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Granted: 1965-11-16
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Expires: 1983-08-27
Abstract
No abstract record available.
Inventors
- 👤 Alvin D Delman
- 👤 Alban E Ruff
- 👤 Bernard B Simms
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:12
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6415; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G73/00; C08G73/06; C08G73/0622; C08G73/0638; C08G73/065
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |