US3776750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black pelleting process
Assignee: Phillips Petroleum Co
•
Filing: 1972-05-10
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Granted: 1973-12-04
•
Expires: 1992-05-10
Abstract
Abstract A two-stage process for pelleting carbon black; in the first stage, an oil-water-carbon black mixture is formed; in the second stage, an aqueous solution is added and the black is pelleted to form soft pellets.
Inventors
- 👤 K Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:49
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56; C09C1/58; C01; C01P; C01P2006/00; C01P2006/21
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
19 words
The method of claim 1 in which the oil contained in said oil-water emulsion is a rubber extender oil.
Claim 2
Dependent Claim
17 words
The method of claim 1 in which said water is contained in an aqueous solution comprising molasses.
Claim 3
Dependent Claim
25 words
The method of claim 1 in which said emulsion is comprised of from about 0.3 to about 3 pounds of oil per pound of water.
Claim 4
Dependent Claim
28 words
The method of claim 1 in which said first mixture is comprised of from about 0.5 to about 2 pounds of said emulsion per pound of carbon black.
Claim 5
Dependent Claim
25 words
The method of claim 1 in which said first mixture contains from about 0.15 to about 1.5 pound of oil per pound of carbon black.
Claim 6
Dependent Claim
24 words
The method of claim 1 in which said second mixture contains from about 0.8 to about 2 pounds of water per pound of black.
Claim 7
Dependent Claim
17 words
The method of claim 2 in which said water is contained in an aqueous solution comprising molasses.
Claim 8
Dependent Claim
43 words
The method of claim 2 in which said emulsion is comprised of from about 0.3 to about 3 pounds of oil per pound of water and said second mixture contains from about 0.8 to about 2 pounds of water per pound of black.
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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |