US2641533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of carbon black with oxyhalides
Assignee: Phillips Petroleum Co
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Filing: 1950-11-06
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Granted: 1953-06-09
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Expires: 1970-11-06
Abstract
No abstract record available.
Inventors
- 👤 Martin R Cines
- 👤 William T Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:14
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS FOR TREATING A HIGH PH FURNACE CARBON BLACK HAVING A PH OF FROM 8.5 TO 10.1 TO SUBSTANTIALLY LOWER ITS PH AND THEREBY INCREASEE THE SCORCH TIME OF A RUBBER MIX COMPOUNDED THEREWITH WHICH COMPRISES, CONTACTING SAID CARBON BLACK WITH AN OXYHALIDE SELECTED FROM THE GROUP CONSISTING OF NITROGEN OXYHALIDES, SULFUR OXYHALIDES, PHOSPHORUS OXYHALIDES, AND MIXTURES THEREOF, AT A TEMPERATURE OF FROM ATMOSPHERIC TO 400* F. AND RECOVERING A RESULTING CARBON BLACK HAVING A SUBSTANTIALLY REDUCED PH.
Claim 2
Dependent Claim
79 words
A PROCESS FOR TREATING A HIGH PH FURNACE CARBON BLACK HAVING A PH OF FROM 8.5 TO 10.1 TO SUBSTANTIALLY LOWER ITS PH AND THEREBY INCREASEE THE SCORCH TIME OF A RUBBER MIX COMPOUNDED THEREWITH WHICH COMPRISES, CONTACTING SAID CARBON BLACK WITH AN OXYHALIDE SELECTED FROM THE GROUP CONSISTING OF NITROGEN OXYHALIDES, SULFUR OXYHALIDES, PHOSPHORUS OXYHALIDES, AND MIXTURES THEREOF, AT A TEMPERATURE OF FROM ATMOSPHERIC TO 400* F. AND RECOVERING A RESULTING CARBON BLACK HAVING A SUBSTANTIALLY REDUCED PH.
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) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |