US3697476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefins containing an imine modified carbon black compound
Assignee: United States Department of the Navy
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Filing: 1971-01-14
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Granted: 1972-10-10
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Expires: 1991-01-14
Abstract
Abstract A CYCLIC IMINE AND CARBON BLACK COMPOUND IS PROVIDED WHICH CAN BE USED AS A REINFORCING AGENT FOR A POLYOLEFIN MATERIAL.
Inventors
- 👤 Paul Lagally
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:30
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K5/00; C08K5/16; C08K5/34; C08K5/3412
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |