Patent US2890256A successfully refreshed from Google Patents.
US2890256A
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Pyrolitic hydrocarbon conversion process for making ethylene
Assignee: MW Kellogg Co
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Filing: 1955-05-03
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Granted: 1959-06-09
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Expires: 1975-05-03
Abstract
No abstract record available.
Inventors
- 👤 Charles C King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:33
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/02; C07C4/04; C10; C10G; C10G9/00; C10G9/34; C10G9/36; Y; Y10; Y10S; Y10S585/00; Y10S585/919; Y10S585/921; Y10S585/924; Y10S585/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE PROCESS FOR THE PRODUCTION OF ETHYLENE WHICH COMPROSES PASSING A HYDROCARBON REACTANT THROUGH A TUBULAR PYROLYTIC CONVERSION ZONE UNDER CONDITIONS SUITABLE FOR THE PRODUCTION OF ETHYLENE INCLUDING A TEMPERATURE BETWEEN ABOUT 900 AND ABOUT 1600* F. AND A TIME SUFFICIENT TO CONVERT NOT MOR ETHAN 10% THE HYDROCARBONS TO ETHYLENE AND PASSING THE PRODUCT FROM SAID TUBUALR CONVERSION ZONE THROUGH AN ELONGATED PYROLYTIC CONVERSION ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 1200 AND ABOUT 1700* F. FOR A PERIOD OF ABOUT 0.5 TO ABOUT 3.0 SECONDS WHEREBY A FURTHER PORTION OF SAID HYDROCARBONS IS CONVERTED TO ETHYLENE.
Claim 2
Dependent Claim
98 words
THE PROCESS FOR THE PRODUCTION OF ETHYLENE WHICH COMPROSES PASSING A HYDROCARBON REACTANT THROUGH A TUBULAR PYROLYTIC CONVERSION ZONE UNDER CONDITIONS SUITABLE FOR THE PRODUCTION OF ETHYLENE INCLUDING A TEMPERATURE BETWEEN ABOUT 900 AND ABOUT 1600* F. AND A TIME SUFFICIENT TO CONVERT NOT MOR ETHAN 10% THE HYDROCARBONS TO ETHYLENE AND PASSING THE PRODUCT FROM SAID TUBUALR CONVERSION ZONE THROUGH AN ELONGATED PYROLYTIC CONVERSION ZONE MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 1200 AND ABOUT 1700* F. FOR A PERIOD OF ABOUT 0.5 TO ABOUT 3.0 SECONDS WHEREBY A FURTHER PORTION OF SAID HYDROCARBONS IS CONVERTED TO ETHYLENE.
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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) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |