Patent US4520090A successfully refreshed from Google Patents.
US3418285A
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Unsaturated polymer crosslinked with a polyfunctional nitrile imine
Assignee: Hercules LLC
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Filing: 1965-04-13
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Granted: 1968-12-24
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Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 David S Breslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:36
CPC Classifications
C; C07; C07C; C07C251/00; C07C251/72; C07C259/00; C07C259/02; C07C291/00; C07C291/02; C08; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0442; C08F8/00; C08F8/30; C08G; C08G63/00; C08G63/68; C08G63/685; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/29; C08K5/30; C08K5/32
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) | 1971-12-24 | 1972-06-24 | 1972-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-24 | 1976-06-24 | 1976-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-24 | 1980-06-24 | 1980-12-24 | $7700.00 | Window Closed / Lapsed |