US2796947A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective adsorption process and apparatus
Assignee: —
•
Filing: —
•
Granted: 1957-06-25
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Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:28
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0025; C; C10; C10G; C10G11/00; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0462; B01D53/06; B01D53/08; B01D53/34; B01D53/46; B01D53/72; B01J8/003; C10G25/00; B01D2253/00; B01D2253/10; B01D2253/102; B01D2256/00; B01D2256/16; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/70; B01D2257/702; B01D2257/7022; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40086; B01D2259/40088; B01J2208/00; B01J2208/00008; B01J2208/0061; B01J2208/00743; B01J2208/00752; C10G9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A SOLIDS-FLUID CONTACTING PROCES WHICH COMPRISES PASSING A GRANULAR SOLID MATERIAL DOWNWARDLY BY GRAVITY FROM A SOLIDS HOPPER ZONE THROUGH A CONTACTING COLUMN CONTAINING AT LEAST ONE CONTACTING ZONE, PASSING A FLUID THERETHROUGH TO CONTACT SAID SOLIDS, REMOVING SOLID CONTACT MATERIAL FROM THE BOTTOM OF SAID COLUMN, CONVEYING SAID SOLID MATERIAL BY MEANS OF A CONVEYANCE FLUID UPWARDLY THROUGH AN ELONGATED CONVEYANCE ZONE INTO A SOLIDS-FLUID SEPARATOR ZONE WHEREIN SAID CONVEYANCE FLUID AND SOLIDS ARE SEPARATED INTO SUBSTANTIALLY INDEPENDENT PHASES CONSISTING OF A CONVEYANCE FLUID CONTAINING SUSPENDED FINE SOLIDS AND A DENSE MOVING MASS OF CONVEYED SOLIDS, PASSING SAID SOLIDS DOWNWARDLY AS A MASS INTO AN UPPER SOLIDS ZONE TO FORM THEREIN A
Claim 2
Dependent Claim
113 words
A SOLIDS-FLUID CONTACTING PROCES WHICH COMPRISES PASSING A GRANULAR SOLID MATERIAL DOWNWARDLY BY GRAVITY FROM A SOLIDS HOPPER ZONE THROUGH A CONTACTING COLUMN CONTAINING AT LEAST ONE CONTACTING ZONE, PASSING A FLUID THERETHROUGH TO CONTACT SAID SOLIDS, REMOVING SOLID CONTACT MATERIAL FROM THE BOTTOM OF SAID COLUMN, CONVEYING SAID SOLID MATERIAL BY MEANS OF A CONVEYANCE FLUID UPWARDLY THROUGH AN ELONGATED CONVEYANCE ZONE INTO A SOLIDS-FLUID SEPARATOR ZONE WHEREIN SAID CONVEYANCE FLUID AND SOLIDS ARE SEPARATED INTO SUBSTANTIALLY INDEPENDENT PHASES CONSISTING OF A CONVEYANCE FLUID CONTAINING SUSPENDED FINE SOLIDS AND A DENSE MOVING MASS OF CONVEYED SOLIDS, PASSING SAID SOLIDS DOWNWARDLY AS A MASS INTO AN UPPER SOLIDS ZONE TO FORM THEREIN 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) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |