Patent US630939A successfully refreshed from Google Patents.
Patent US2918140A successfully refreshed from Google Patents.
US2918140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of gas mixtures
Assignee: Sunoco Inc
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Filing: 1958-06-20
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Granted: 1959-12-22
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Expires: 1978-06-20
Abstract
No abstract record available.
Inventors
- 👤 Charles H Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:18
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/047; B01D2253/00; B01D2253/10; B01D2253/102; B01D2256/00; B01D2256/24; B01D2257/00; B01D2257/70; B01D2257/702; B01D2259/00; B01D2259/40; B01D2259/40001; B01D2259/40011; B01D2259/40058; B01D2259/4006; B01D2259/402
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
213 words
METHOD OF SEPARATING A FEED GAS COMPRISING COMPONENTS A AND B INTO PRODUCTS RICH IN A AND B, RESPECTIVELY, BY MEANS OF A SERIES OF ADSORPTION ZONES COMPRISING ZONES X, Y AND Z EACH CONTAINING AN ADSORBENT WHICH WILL PREFERENTIALLY ABSORB A WHICH MEWTHOD COMPRISES THE FOLLOWING SEQUENCE OF OPERATIONS FOR SAID ZONES: PASSING THE FEED GAS IN ADMIXTURE WITH STREAMS R AND L HEREINAFTER SPECIFIED UNDER HIGH PRESSURE THROUGH ZONE X TO PREFERENTIALLY ADSORB A AND WITHDRAWING A SECOND RICHED IN B, THEN PASSING FEED GAS UNDER LOW PRESSURE THROUGH ZONE X TO DESORB A AND WITHDRAWING A SECOND STREAM ENRICHED IN A; PASSING SAID FIRST STREAM AT HIGH PRESSURE THROUGH ZONE Y TO FURTHER ADSORB A AND WITHDRAWING A PRODUCT STREAM AT LOW PRESSURE AFTER PASSING SAID FIRST STREAM AT LOW PRESSURE THROUGH ZONE Y TO DESORB A, SAID FIRST STREAM AT LOW PRESSURE AFTER STREAM R, AND WITHDRAWING PREVIOUSLY SPECIFIED STREAM R; PASSING SAID SECOND STREAM, AT HIGH PRESSURE THROUGH ZONE Z TO ADSORB A, SAID SECOND STREAM AT HIGH PRESSURE AFTER PASSING THROUGH ZONE Z CONSITUTING PREVIOUSLY MENTIONED STREAM L, AND WITHDRAWING PREVIOUSLY SPECIFIED STREAM L, AND THEN PASSING SAID SECOND STREAM AT LOW PRESSURE THROUGH ZONE Z TO DESORB A AND WITHDRAWING A PRODUCT STREAM ENRICHED IN A.
Claim 2
Dependent Claim
213 words
METHOD OF SEPARATING A FEED GAS COMPRISING COMPONENTS A AND B INTO PRODUCTS RICH IN A AND B, RESPECTIVELY, BY MEANS OF A SERIES OF ADSORPTION ZONES COMPRISING ZONES X, Y AND Z EACH CONTAINING AN ADSORBENT WHICH WILL PREFERENTIALLY ABSORB A WHICH MEWTHOD COMPRISES THE FOLLOWING SEQUENCE OF OPERATIONS FOR SAID ZONES: PASSING THE FEED GAS IN ADMIXTURE WITH STREAMS R AND L HEREINAFTER SPECIFIED UNDER HIGH PRESSURE THROUGH ZONE X TO PREFERENTIALLY ADSORB A AND WITHDRAWING A SECOND RICHED IN B, THEN PASSING FEED GAS UNDER LOW PRESSURE THROUGH ZONE X TO DESORB A AND WITHDRAWING A SECOND STREAM ENRICHED IN A; PASSING SAID FIRST STREAM AT HIGH PRESSURE THROUGH ZONE Y TO FURTHER ADSORB A AND WITHDRAWING A PRODUCT STREAM AT LOW PRESSURE AFTER PASSING SAID FIRST STREAM AT LOW PRESSURE THROUGH ZONE Y TO DESORB A, SAID FIRST STREAM AT LOW PRESSURE AFTER STREAM R, AND WITHDRAWING PREVIOUSLY SPECIFIED STREAM R; PASSING SAID SECOND STREAM, AT HIGH PRESSURE THROUGH ZONE Z TO ADSORB A, SAID SECOND STREAM AT HIGH PRESSURE AFTER PASSING THROUGH ZONE Z CONSITUTING PREVIOUSLY MENTIONED STREAM L, AND WITHDRAWING PREVIOUSLY SPECIFIED STREAM L, AND THEN PASSING SAID SECOND STREAM AT LOW PRESSURE THROUGH ZONE Z TO DESORB A AND WITHDRAWING A PRODUCT STREAM ENRICHED IN A.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-21 | 1963-06-22 | 1963-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-21 | 1967-06-22 | 1967-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-21 | 1971-06-22 | 1971-12-22 | $7700.00 | Window Closed / Lapsed |