Patent US3329626A successfully refreshed from Google Patents.
US3329626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Activated furnace carbon black production
Assignee: Phillips Petroleum Co
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Filing: 1965-03-22
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Granted: 1967-07-04
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Expires: 1985-03-22
Abstract
No abstract record available.
Inventors
- 👤 Archie C Teter
- 👤 Kraus Gerard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:22
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C01; C01P; C01P2006/00; C01P2006/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR ACTIVATING FURNACE CARBON BLACK WHICH COMPRISES TREATING PELLETS OF FURNACE CARBON BLACK WITH ABOUT 0.5 TO 10 WEIGHT PERCENT OF POTASSIUM CHLORIDE; AND CONTACTING THE CARBON BLACK AND CATALYST WITH STEAM AT A TEMPERATURE OF ABOUT 675 TO 1000*C. FOR ABOUT 5 MINUTES TO 4 HOURS.
Claim 2
Dependent Claim
49 words
A PROCESS FOR ACTIVATING FURNACE CARBON BLACK WHICH COMPRISES TREATING PELLETS OF FURNACE CARBON BLACK WITH ABOUT 0.5 TO 10 WEIGHT PERCENT OF POTASSIUM CHLORIDE; AND CONTACTING THE CARBON BLACK AND CATALYST WITH STEAM AT A TEMPERATURE OF ABOUT 675 TO 1000*C. FOR ABOUT 5 MINUTES TO 4 HOURS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |