US3383175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon black
Assignee: Cabot Corp
•
Filing: 1966-01-21
•
Granted: 1968-05-14
•
Expires: 1986-01-21
Abstract
No abstract record available.
Inventors
- 👤 Merrill E Jordan
- 👤 Burbine William Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:08
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2002/00; C01P2002/50; C01P2002/52; C01P2006/00; C01P2006/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A PROCESS FOR PRODUCING CARBON BLACK BY THE DECOMPOSITION OF AN ESSENTIALLY HYDROCARBON FEEDSTOCK IN A CARBON BLACK FORMING ZONE, THE IMPROVEMENT WHICH COMPRISES CONTROLLING PROPERTIES OF THE CARBON BLACK PRODUCED BY INTRODUCING INTO SAID CARBON FORMING ZONE A MATERIAL COMPRISING A RARE EARTH METAL HAVING AN ATOMIC NUMBER OF 57 TO 71 IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST ABOUT 0.2 MILLIGRAM ATOMS OF SAID METAL PER MOLE OF HYDROCARBON FEEDSTOCK CARBON.
Claim 2
Dependent Claim
75 words
IN A PROCESS FOR PRODUCING CARBON BLACK BY THE DECOMPOSITION OF AN ESSENTIALLY HYDROCARBON FEEDSTOCK IN A CARBON BLACK FORMING ZONE, THE IMPROVEMENT WHICH COMPRISES CONTROLLING PROPERTIES OF THE CARBON BLACK PRODUCED BY INTRODUCING INTO SAID CARBON FORMING ZONE A MATERIAL COMPRISING A RARE EARTH METAL HAVING AN ATOMIC NUMBER OF 57 TO 71 IN AN AMOUNT SUFFICIENT TO PROVIDE AT LEAST ABOUT 0.2 MILLIGRAM ATOMS OF SAID METAL PER MOLE OF HYDROCARBON FEEDSTOCK CARBON.
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |