US2614657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adsorption of gases with charcoals having different activities
Assignee: Standard Oil Development Co
•
Filing: 1951-06-19
•
Granted: 1952-10-21
•
Expires: 1971-06-19
Abstract
No abstract record available.
Inventors
- 👤 Edward W S Nicholson
- 👤 Robert J Fritz
- 👤 Lewis D Etherington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:01
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2251/00; B01D2251/10; B01D2251/102; B01D2256/00; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/70; B01D2257/702; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D2259/402
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A PROCESS FOR THE SEPARATION OF COMPONENTS OF A GASEOUS MIXTURE COMPRISING A LESS READILY ADSORBED COMPONENT A, A MOST READILY ADSORBABLE COMPONENT C, AND AN INTERMEDIATE COMPONENT B BY MEANS OF ADSORPTION BY A SOLID ADSORBENT WHICH COMPRISES CONTACTING THE GASEOUS MIXTURE IN A FIRST ADSORPTION ZONE WITH A SOLID ADSORBENT OF REDUCED ACTIVITY, SEPARATING AN UNADSORBED GASEOUS STREAM COMPRISING COMPONENTS A AND B FROM A FIRST RICH ADSORBENT CONTAINING COMPONENT C ADSORBEND THEREON, CONTACTING THE GASEOUS STREAM COMPRISING COMPONENTS A AND B WITH A SOLID ADSORBENT OF HIGH ACTIVITY IN A SECOND ADSORPTION ZONE, AND SEPARATING AN UNADSORBED GASEOUS STREAM COMPRISING COMPONENT A FROM A SECOND RICH ADSORBENT CONTAINING COMPONENT B ADSORBED THEREON.
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) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |