US3042504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dewatering of aqueous pastes or slurries of thermal carbon black
Assignee: Individual
•
Filing: 1960-03-25
•
Granted: 1962-07-03
•
Expires: 1980-03-25
Abstract
No abstract record available.
Inventors
- 👤 Carter Frederick Denis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:18
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2006/00; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A PROCESS FOR DEWATERING AN AQUEOUS SUSPENSION OF THERMAL CARBON BLACK HAVING A SOLIDS CONCENTRATION OF UP TO 12% BY WEIGHT COMPRISING THE STEPS OF ADDING AN AMOUNT OF BETWEEN 30 TO 130% BY WEIGHT OF THE CARBON BLACK OF A SECOND LIQUID WHICH IS VOLATILE, SUSBTANTIALLY IMMISICIBLE WITH WATER AND WHICH POSSES A HIGHER ADHESION TENSION THAN WATER FOR THE CARBON BLACK, SIMULTANEOUSLY WITH SAID ADDITION SUBJECTING THE MIXTURE TO VIOLENT SEARING ACTION BY HIGH-SPEED AGITATION TO FORM WET GRANULES OF CARBON AND CONTINUING THE AGITATION FOR A SUBSTANTIAL PERIOD AFTER THE FORMATION OF THE GRANULES SO THAT THE TOTAL TIME OF AGITATION IS AT LEAST 15 MINUTES, SEPARATING THE GRANULES FROM THE RESIDUAL LIQUID OF THE MIXTURE BY DRAINING AND THEN DRYING THE GRANULES TO EVAPORATE LIQUID CONTAINED THEREIN.
Claim 2
Dependent Claim
131 words
A PROCESS FOR DEWATERING AN AQUEOUS SUSPENSION OF THERMAL CARBON BLACK HAVING A SOLIDS CONCENTRATION OF UP TO 12% BY WEIGHT COMPRISING THE STEPS OF ADDING AN AMOUNT OF BETWEEN 30 TO 130% BY WEIGHT OF THE CARBON BLACK OF A SECOND LIQUID WHICH IS VOLATILE, SUSBTANTIALLY IMMISICIBLE WITH WATER AND WHICH POSSES A HIGHER ADHESION TENSION THAN WATER FOR THE CARBON BLACK, SIMULTANEOUSLY WITH SAID ADDITION SUBJECTING THE MIXTURE TO VIOLENT SEARING ACTION BY HIGH-SPEED AGITATION TO FORM WET GRANULES OF CARBON AND CONTINUING THE AGITATION FOR A SUBSTANTIAL PERIOD AFTER THE FORMATION OF THE GRANULES SO THAT THE TOTAL TIME OF AGITATION IS AT LEAST 15 MINUTES, SEPARATING THE GRANULES FROM THE RESIDUAL LIQUID OF THE MIXTURE BY DRAINING AND THEN DRYING THE GRANULES TO EVAPORATE LIQUID CONTAINED THEREIN.
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |