US2495842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractionation of gases with solid adsorbents
Assignee: Standard Oil Development Co
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Filing: 1947-01-09
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Granted: 1950-01-31
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Expires: 1967-01-09
Abstract
No abstract record available.
Inventors
- 👤 Edwin R Gilliland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:34
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/106; B01D2256/00; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/70; B01D2257/702; B01D2257/7022; B01D2257/7025; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40086; B01D2259/40088; B01D53/10; B01D53/12; Y; Y02; Y02C; Y02C20/00; Y02C20/20; Y02P; Y02P20/00; Y02P20/151; Y02P20/156
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
AN IMPROVED PROCESS FOR CONCENTRATING AN INTERMEDIATE FRACTION B FROM A FLUID MIXTURE ALSO CONTAINING A LESS READILY ADSORBED COMPONENT A AND A MORE READILY ADSORBED COMPONENT C BY MEANS OF A GRANULAR SOLID ADSORBENT, COMPRISING PASSING SAID ADSORBENT DOWNWARDLY THROUGH A PRIMARY COLUMN HAVING A PRIMARY ADSORPTION ZONE ABOVE THE FEED AND PRIMARY RECTIFICATION AND DESORPTIVE ZONES BELOW THE FEED, REMOVING A PORTION OF SAID DESCENDING ADSORBENT CONTAINING COMPONENTS A AND B, BUT SUBSTANTIALLY FREE OF COMPONENT C, FROM SAID PRIMARY ADSORPTION ZONE AT A POINT SUBSTANTIALLY ABOVE THE FEED AND PASSING THIS REMOVED ADSORBENT DOWNWARDLY THROUGH A SECONDARY COLUMN CONTAINING SECONDARY RECTIFICATION AND DESORPTION ZONES, FEEDING SAID FLUID MIXTURE TO THE MIDDLE OF SAID PRIMARY COLUMN, REMOVING UNADSORBED FLUID COMPONENT A FROM THE TOP OF SAID PRIMARY ADSORPTION ZONE, REMOVING DESORBED COMPONENT C FROM THE PRIMARY DESORPTION ZONE, REMOVING DESORBED COMPONENT B IN A STATE OF HIGH PURITY FROM SAID SECONDARY DESORPTION ZONE, WHILE PASSING A PORTION OF DESORBED COMPONENT B UPWARDLY THROUGH SAID SECONDARY RECTIFICATION ZONE TO DISPLACE COMPONENT A FROM THE DESCENDING ADSORBENT THEREIN.
Claim 2
Dependent Claim
178 words
AN IMPROVED PROCESS FOR CONCENTRATING AN INTERMEDIATE FRACTION B FROM A FLUID MIXTURE ALSO CONTAINING A LESS READILY ADSORBED COMPONENT A AND A MORE READILY ADSORBED COMPONENT C BY MEANS OF A GRANULAR SOLID ADSORBENT, COMPRISING PASSING SAID ADSORBENT DOWNWARDLY THROUGH A PRIMARY COLUMN HAVING A PRIMARY ADSORPTION ZONE ABOVE THE FEED AND PRIMARY RECTIFICATION AND DESORPTIVE ZONES BELOW THE FEED, REMOVING A PORTION OF SAID DESCENDING ADSORBENT CONTAINING COMPONENTS A AND B, BUT SUBSTANTIALLY FREE OF COMPONENT C, FROM SAID PRIMARY ADSORPTION ZONE AT A POINT SUBSTANTIALLY ABOVE THE FEED AND PASSING THIS REMOVED ADSORBENT DOWNWARDLY THROUGH A SECONDARY COLUMN CONTAINING SECONDARY RECTIFICATION AND DESORPTION ZONES, FEEDING SAID FLUID MIXTURE TO THE MIDDLE OF SAID PRIMARY COLUMN, REMOVING UNADSORBED FLUID COMPONENT A FROM THE TOP OF SAID PRIMARY ADSORPTION ZONE, REMOVING DESORBED COMPONENT C FROM THE PRIMARY DESORPTION ZONE, REMOVING DESORBED COMPONENT B IN A STATE OF HIGH PURITY FROM SAID SECONDARY DESORPTION ZONE, WHILE PASSING A PORTION OF DESORBED COMPONENT B UPWARDLY THROUGH SAID SECONDARY RECTIFICATION ZONE TO DISPLACE COMPONENT A FROM THE DESCENDING ADSORBENT THEREIN.
References Cited (Backward Citations)
US1422007A
Cited
US2335009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-30 | 1953-08-01 | 1954-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-30 | 1957-08-01 | 1958-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-30 | 1961-08-01 | 1962-01-31 | $7700.00 | Window Closed / Lapsed |