US2550802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black
Assignee: Columbian Carbon Co
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Filing: 1947-10-15
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Granted: 1951-05-01
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Expires: 1967-10-15
Abstract
No abstract record available.
Inventors
- 👤 Roy L Gholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:32
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2006/00; C01P2006/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
A PROCESS FOR FORMING FINELY DIVIDED FURNAC BLACKS INTO BEADS ADAPTED TO BULK HANDLING WHICH COMPRISES CONTINUOUSLY PASSING AN INCREMENT OF THE BLACK AND AN INCREMENT OF WATER TO AN AGITATING ZONE IN PROPORTIONS SUCH AS WILL FORM THE CARBON BLACK INTO BEADS UPON AGITATION AND AGITATING THE MIXTURE THEREIN UNTIL IT HAS BEEN SUBSTANTIALLY COMPLETELY FORMED INTO BEADS, CONTINUOUSLY PASSING THE RESULTANT BEADS FROM THE AGITATING ZONE, ADDING A SECOND INCREMENT OF THE BLACK THERETO AND AGITATING THE MIXTURE IN A SECOND AGITATING ZONE UNTIL THE BEADS HAVE BECOME DISINTEGRATED, ADDING A SECOND INCREMENT OF WATER IN AN AMOUNT SUFFICIENT TO FORM THE COMPOSITE BLACK MIXTURE INTO BEADS AND AGITATING THE MIXTURE UNTIL IT HAS BEEN SUBSTANTIALLY COMPLETELY FORMED INTO BEADS, CONTINUOUSLY PASSING THE RESULTANT BEADS FROM THE SECOND AGITATING ZONE, ADDING A THIRD INCREMENT OF THE BLACK TO THE BEADS AND AGITATING THE BEADS IN A THIRD AGITATING ZONE UNTIL THE LAST FORMED BEADS HAVE BEEN DISINTEGRATED, ADDING A THIRD INCREMENT OF WATER IN AN AMOUNT SUFFICIENT TO FORM THE COMPOSITE BLACK MIXTURE INTO BEADS AND CONTINUING THE AGITATION UNTIL IT HAS BEEN SUBSTANTIALLY COMPLETELY FORMED INTO BEADS AND CONTINUOUSLY PASSING THE RESULTANT BEADS FROM THE THIRD AGITATING ZONE.
Claim 2
Dependent Claim
201 words
A PROCESS FOR FORMING FINELY DIVIDED FURNAC BLACKS INTO BEADS ADAPTED TO BULK HANDLING WHICH COMPRISES CONTINUOUSLY PASSING AN INCREMENT OF THE BLACK AND AN INCREMENT OF WATER TO AN AGITATING ZONE IN PROPORTIONS SUCH AS WILL FORM THE CARBON BLACK INTO BEADS UPON AGITATION AND AGITATING THE MIXTURE THEREIN UNTIL IT HAS BEEN SUBSTANTIALLY COMPLETELY FORMED INTO BEADS, CONTINUOUSLY PASSING THE RESULTANT BEADS FROM THE AGITATING ZONE, ADDING A SECOND INCREMENT OF THE BLACK THERETO AND AGITATING THE MIXTURE IN A SECOND AGITATING ZONE UNTIL THE BEADS HAVE BECOME DISINTEGRATED, ADDING A SECOND INCREMENT OF WATER IN AN AMOUNT SUFFICIENT TO FORM THE COMPOSITE BLACK MIXTURE INTO BEADS AND AGITATING THE MIXTURE UNTIL IT HAS BEEN SUBSTANTIALLY COMPLETELY FORMED INTO BEADS, CONTINUOUSLY PASSING THE RESULTANT BEADS FROM THE SECOND AGITATING ZONE, ADDING A THIRD INCREMENT OF THE BLACK TO THE BEADS AND AGITATING THE BEADS IN A THIRD AGITATING ZONE UNTIL THE LAST FORMED BEADS HAVE BEEN DISINTEGRATED, ADDING A THIRD INCREMENT OF WATER IN AN AMOUNT SUFFICIENT TO FORM THE COMPOSITE BLACK MIXTURE INTO BEADS AND CONTINUING THE AGITATION UNTIL IT HAS BEEN SUBSTANTIALLY COMPLETELY FORMED INTO BEADS AND CONTINUOUSLY PASSING THE RESULTANT BEADS FROM THE THIRD AGITATING ZONE.
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) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |