US3567395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing carbon black
Assignee: Phillips Petroleum Co
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Filing: 1968-10-21
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Granted: 1971-03-02
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Expires: 1988-10-21
Abstract
Abstract A CHOKE FOR AN AXIAL TYPE CARBON BLACK REACTOR WHICH CONSISTS OF AN ELEMENT SLIDABLY POSITIONABLE ALONG THE AXIS OF THE AXIAL TUNNEL, THE PASSAGEWAY THROUGH THE CHOKE BEING ADAPTED TO BE ALTERED IN RESPECT TO AREA.
Inventors
- 👤 Eulas W Henderson
- 👤 Glenn J Forseth
- 👤 Sheldon A Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:25
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; B; B01; B01J; B01J19/00; B01J19/0006
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |