US3100689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon black manufacture
Assignee: Columbian Carbon Co
•
Filing: 1958-08-21
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Granted: 1963-08-13
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Expires: 1978-08-21
Abstract
No abstract record available.
Inventors
- 👤 Jr James Lawrence Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:52
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C01; C01P; C01P2006/00; C01P2006/19; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
IN THE PROCESS FOR PRODUCING FURNACE CARBON BLACK BY THE PARTIAL COMBUSTION OF HYDROCARBON OILS WHEREBY A GENTLY-FLOWING, RELATIVELY UNIFORM CURRENT OF AIR IS PASSED UPWARDLY THROUGH THE LOWER PORTION OF AN UNOBSTRUCTED VERTICALLY-ELONGATED FURNACE CHAMBER AND THE HYDROCARBON OIL IS INJECTED UPWARDLY INTO THE CHAMBER AS A HIGH VELOCITY GAS-ATOMIXED SPRAY INTITATED IN THE LOWER END OF THE CHAMBER, WHEREBY A PORTION OF THE HYDROCARBON IS BURNED IN THE LOWER PORTION OF THE CHAMBER AND THERE IS ESTABLISHED IN THE FURNACE CHAMBER ABOVE SAID ZONE OF COMBUSTION A LAZY, SUBSTANTIALLY NON-OXIDIZING, UPWARDLY RISING ATMOSPHERE OF HOT FURNACE GASES AT A TEMPERATURE ABOVE THE DECOMPOSTITION TEMPERATURE OF THE REMAINING HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES INJECTING THE OIL INTO THE FURNACE CHAMBER AS A CLUSTER OF CLOSELY SPACED,
Claim 2
Dependent Claim
127 words
IN THE PROCESS FOR PRODUCING FURNACE CARBON BLACK BY THE PARTIAL COMBUSTION OF HYDROCARBON OILS WHEREBY A GENTLY-FLOWING, RELATIVELY UNIFORM CURRENT OF AIR IS PASSED UPWARDLY THROUGH THE LOWER PORTION OF AN UNOBSTRUCTED VERTICALLY-ELONGATED FURNACE CHAMBER AND THE HYDROCARBON OIL IS INJECTED UPWARDLY INTO THE CHAMBER AS A HIGH VELOCITY GAS-ATOMIXED SPRAY INTITATED IN THE LOWER END OF THE CHAMBER, WHEREBY A PORTION OF THE HYDROCARBON IS BURNED IN THE LOWER PORTION OF THE CHAMBER AND THERE IS ESTABLISHED IN THE FURNACE CHAMBER ABOVE SAID ZONE OF COMBUSTION A LAZY, SUBSTANTIALLY NON-OXIDIZING, UPWARDLY RISING ATMOSPHERE OF HOT FURNACE GASES AT A TEMPERATURE ABOVE THE DECOMPOSTITION TEMPERATURE OF THE REMAINING HYDROCARBONS, THE IMPROVEMENT WHICH COMPRISES INJECTING THE OIL INTO THE FURNACE CHAMBER AS A CLUSTER OF CLOSELY SPACED,
References Cited (Backward Citations)
US2779665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-12 | 1967-02-11 | 1967-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-12 | 1971-02-11 | 1971-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-12 | 1975-02-11 | 1975-08-13 | $7700.00 | Window Closed / Lapsed |