US2876865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling hot gases
Assignee: Phillips Petroleum Co
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Filing: 1956-11-02
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Granted: 1959-03-10
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Expires: 1976-11-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph R Cobb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:18
CPC Classifications
B; B01; B01D; B01D51/00; B01D51/10; C; C10; C10G; C10G2400/00; C10G2400/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS FOR PREPARING LOW PRESSURE HIGH TEMPERATURE CRACKED GASES CONTAINING ETHYLENE AND EASILY POLYMERIZABLE HYDROCARBONS FOR SUBSEQUENT PROCESSING AT A PRESSURE HIGHER THAN SAID LOW PRESSURE AND AT AMBIENT TEMPERATURE COMPRISING THE STEPS OF QUENCHING SAID HIGH TEMPERATURE CRACKED GASES BY DIRECT HEAT EXCHANGE WITH A COOL QUENCH OIL, COOLING THE QUENCHED GASES BY DIRECT HEAT EXCHANGE WITH PLANT COOLING WATER, FUTHER COOLING THE COOLED GASES BY DIRECTED HEAT EXCHANGE WITH REFRIGERATED WATER, COMPRESSING THE FURTHER COOLED GASES TO SUCH PRESSURE THAT THE COMPRESSED GASES ISSUE FROM SAID COMPRESSOR AT A TEMPERATURE OF ABOUT 250* F., COOLING THE COM-
Claim 2
Dependent Claim
100 words
A PROCESS FOR PREPARING LOW PRESSURE HIGH TEMPERATURE CRACKED GASES CONTAINING ETHYLENE AND EASILY POLYMERIZABLE HYDROCARBONS FOR SUBSEQUENT PROCESSING AT A PRESSURE HIGHER THAN SAID LOW PRESSURE AND AT AMBIENT TEMPERATURE COMPRISING THE STEPS OF QUENCHING SAID HIGH TEMPERATURE CRACKED GASES BY DIRECT HEAT EXCHANGE WITH A COOL QUENCH OIL, COOLING THE QUENCHED GASES BY DIRECT HEAT EXCHANGE WITH PLANT COOLING WATER, FUTHER COOLING THE COOLED GASES BY DIRECTED HEAT EXCHANGE WITH REFRIGERATED WATER, COMPRESSING THE FURTHER COOLED GASES TO SUCH PRESSURE THAT THE COMPRESSED GASES ISSUE FROM SAID COMPRESSOR AT A TEMPERATURE OF ABOUT 250* F., COOLING THE COM-
References Cited (Backward Citations)
US2715948A
Cited
US2747680A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |