US3010795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black process
Assignee: Cabot Corp
•
Filing: 1958-10-01
•
Granted: 1961-11-28
•
Expires: 1978-10-01
Abstract
No abstract record available.
Inventors
- 👤 George F Friauf
- 👤 Thorley Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:32
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C01; C01P; C01P2002/00; C01P2002/50; C01P2002/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A PROCESS FOR MAKING CARBON BLACK BY THE THERMAL DECOMPOSITION OF A FLUID HYDROCARBON FLOWING THROUGH AN ENCLOSED HIGH TEMPERATURE, CARBON FORMING REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES CONTROLLING IMPORTANT RUBBER PROPERTIES OF THE CARBON BLACK PRODUCED BY CONTINUOUSLY INTRODUCING AT A CONTROLLED RATE INTO SAID CARBON FORMING REACTION ZONE A SUBSTANCE COMPRISING AN ALKALI METAL HAVING AN ATOMIC NUMBER OF LESS THAN 12 IN AMOUNTS SUFFICIENT TO PROVIDE AT LEAST 50 PARTS BY WEIGHT OF SAID ALKALI METAL PER MILLION PARTS OF CARBON BLACK BEING PRODUCED, SAID PROPORTION OF ALKALI METAL BEING DIRECTLY RELATED TO THE DEGREE OF ADJUSTMENT NEEDED IN SAID RUBBER PROPERTIES.
Claim 2
Dependent Claim
106 words
IN A PROCESS FOR MAKING CARBON BLACK BY THE THERMAL DECOMPOSITION OF A FLUID HYDROCARBON FLOWING THROUGH AN ENCLOSED HIGH TEMPERATURE, CARBON FORMING REACTION ZONE, THE IMPROVEMENT WHICH COMPRISES CONTROLLING IMPORTANT RUBBER PROPERTIES OF THE CARBON BLACK PRODUCED BY CONTINUOUSLY INTRODUCING AT A CONTROLLED RATE INTO SAID CARBON FORMING REACTION ZONE A SUBSTANCE COMPRISING AN ALKALI METAL HAVING AN ATOMIC NUMBER OF LESS THAN 12 IN AMOUNTS SUFFICIENT TO PROVIDE AT LEAST 50 PARTS BY WEIGHT OF SAID ALKALI METAL PER MILLION PARTS OF CARBON BLACK BEING PRODUCED, SAID PROPORTION OF ALKALI METAL BEING DIRECTLY RELATED TO THE DEGREE OF ADJUSTMENT NEEDED IN SAID RUBBER PROPERTIES.
References Cited (Backward Citations)
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Cited
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US2617714A
Cited
US2794709A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |