US3493350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black feeding to a pelletizer using gas pulses in the flow control zone
Assignee: Phillips Petroleum Co
•
Filing: 1966-02-16
•
Granted: 1970-02-03
•
Expires: 1986-02-16
Abstract
No abstract record available.
Inventors
- 👤 Allen C Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
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)
US2948918A
Cited
US3024093A
Cited
US3071803A
Cited
US3266873A
Cited
US3266874A
Cited
US3293003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |