Patent US2503265A successfully refreshed from Google Patents.
US2503265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separating constituents of coke oven gases
Assignee: Beazer East Inc
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Filing: 1946-07-23
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Granted: 1950-04-11
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Expires: 1966-07-23
Abstract
No abstract record available.
Inventors
- 👤 Haynes Pierre Evan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:39
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0242; C; C07; C07C; C07C7/00; C07C7/005; F25J3/0204; F25J3/0219; F25J3/0233; F25J3/0238; F25J2210/00; F25J2210/14; F25J2215/00; F25J2215/62; F25J2215/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD OF SEPARATING OLEFINS FROM FUEL GAS CONTAINING METHANE AND HIGHER BOILING PARAFFINS, ETHYLENE AND PROPYLENE COMPRISING: COMPRESSING THE GAS, COOLING THE GAS AND CONDENSING THE HIGHER BOILING POINT CONSTITUENTS THEREIN, SEPARATING THE GAS FROM THE CONDENSATE, RECTIFYING THE CONDENSATE TO REMOVE METHANE OVERHEAD AND TO SEPARATE AN OLEFINE MIXTURE AS A BASE CUT, EXPANDING THE SEPARATED GAS AND METHANE ADIABATICALLY TO COOL THE GAS, UTILIZING THE COOLED GAS AND METHANE FOR CONTROLLING THE TEMPERATURES FOR SAID GAS-CONDENSATE SEPARATION AND SAID CONDENSATE DEMETHANIZATION, RECTIFYING THE DEMETHANIZED OLEFINE MIXTURE TO TAKE OVERHEAD AN ETHYLENE FRACTION AND A BASE CUT OF HYDROCARBONS HAV-
Claim 2
Independent Claim
102 words
A METHOD OF SEPARATING OLEFINS FROM FUEL GAS CONTAINING METHANE AND HIGHER BOILING PARAFFINS, ETHYLENE AND PROPYLENE COMPRISING: COMPRESSING THE GAS, COOLING THE GAS AND CONDENSING THE HIGHER BOILING POINT CONSTITUENTS THEREIN, SEPARATING THE GAS FROM THE CONDENSATE, RECTIFYING THE CONDENSATE TO REMOVE METHANE OVERHEAD AND TO SEPARATE AN OLEFINE MIXTURE AS A BASE CUT, EXPANDING THE SEPARATED GAS AND METHANE ADIABATICALLY TO COOL THE GAS, UTILIZING THE COOLED GAS AND METHANE FOR CONTROLLING THE TEMPERATURES FOR SAID GAS-CONDENSATE SEPARATION AND SAID CONDENSATE DEMETHANIZATION, RECTIFYING THE DEMETHANIZED OLEFINE MIXTURE TO TAKE OVERHEAD AN ETHYLENE FRACTION AND A BASE CUT OF HYDROCARBONS HAV-
References Cited (Backward Citations)
US2270852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |