US3459844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wet pelleting of carbon black
Assignee: Phillips Petroleum Co
•
Filing: 1967-08-16
•
Granted: 1969-08-05
•
Expires: 1987-08-16
Abstract
No abstract record available.
Inventors
- 👤 Clinie E Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/10; C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2004/00; C01P2004/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2699381A
Cited
US2942299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-04 | 1973-02-03 | 1973-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-04 | 1977-02-03 | 1977-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-04 | 1981-02-03 | 1981-08-05 | $7700.00 | Window Closed / Lapsed |