US2794709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of carbon black and hydrogen
Assignee: Houdry Process Corp
•
Filing: 1952-12-20
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Granted: 1957-06-04
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Expires: 1972-12-20
Abstract
No abstract record available.
Inventors
- 👤 Chalmer G Kirkbride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:39
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/54; C01; C01B; C01B3/00; C01B3/02; C01B3/22; C01B3/24; C01B3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE PROCESS FOR THE PYROLYTIC DECOMPOSTION OF NORMALLY GASEOUS HYDROCARBONS TO GOOD YIELDS OF CARBON AND HYDROGEN COMPRISING INTRODUCING SUCH A HYDROCARBON FEED INTO DIRECT HEAT EXCHANGE CONTACT WITH A POOL OF MOLTEN MATERIAL, CONTINUING SAID CONTACT AND ELEVATING THE TEMPERATUE OF SAID CHARGE TO REACTION TEMPERATURE, PASSING THUS HEATED CHARGE UPWARDLY INTO CONTACT WITH A LAYER OF HOT FLUIDIZED CARBON AT HYDROCARBON DECOMPOSITION TEMPERATURE, EFFECTING DECOMPOSTION OF SAID CHARGE TO CARBON AND HYDROCARBON DURING SAID LAST MENTIONED CONTACT, AND RECOVERING PRODUCTS OF SAID DECOMPOSITION, WHILE CONTINUOUSLY MAINTAINING SAID LAYER OF CARBON IN FLUIDIZED CONDITION ABOVE SAID MOLTEN MATERIAL.
Claim 2
Dependent Claim
99 words
THE PROCESS FOR THE PYROLYTIC DECOMPOSTION OF NORMALLY GASEOUS HYDROCARBONS TO GOOD YIELDS OF CARBON AND HYDROGEN COMPRISING INTRODUCING SUCH A HYDROCARBON FEED INTO DIRECT HEAT EXCHANGE CONTACT WITH A POOL OF MOLTEN MATERIAL, CONTINUING SAID CONTACT AND ELEVATING THE TEMPERATUE OF SAID CHARGE TO REACTION TEMPERATURE, PASSING THUS HEATED CHARGE UPWARDLY INTO CONTACT WITH A LAYER OF HOT FLUIDIZED CARBON AT HYDROCARBON DECOMPOSITION TEMPERATURE, EFFECTING DECOMPOSTION OF SAID CHARGE TO CARBON AND HYDROCARBON DURING SAID LAST MENTIONED CONTACT, AND RECOVERING PRODUCTS OF SAID DECOMPOSITION, WHILE CONTINUOUSLY MAINTAINING SAID LAYER OF CARBON IN FLUIDIZED CONDITION ABOVE SAID MOLTEN MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |