US3565658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black dispersing agent
Assignee: Phillips Petroleum Co
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Filing: 1968-07-19
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Granted: 1971-02-23
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Expires: 1988-07-19
Abstract
Abstract A MATERIAL WHICH ACTS BOTH AS A PELLETING AGENT AND A DISPERSANT FOR CARBON BLACK IN RUBBER WHICH COMPRISES A POLYETHOXYLATED AMINE CONTAINED IN CARBON BLACK IN THE AMOUNT OF ABOUT 0.1 TO ABOUT 10%.
Inventors
- 👤 Arthur E Frazier
- 👤 Robert E Dollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:44
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C08K9/00; C08K9/08
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |