US2584296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for countercurrent contacting of solids and gases
Assignee: Standard Oil Development Co
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Filing: 1946-11-30
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Granted: 1952-02-05
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Expires: 1966-11-30
Abstract
No abstract record available.
Inventors
- 👤 Harold W Scheeline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:05
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/106; B01D2253/30; B01D2253/302; B01D2253/304; B01D2256/00; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/70; B01D2257/702; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40086; B01D2259/40088
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
AN IMPROVED SOLID-VAPOR CONTACTING PROCESS, COMPRISING CONTINUOUSLY PASSING A GRANULAR, SOLID MATERIAL DOWNWARDLY, AND A VAPOROUS MATERIAL UPWARDLY THROUGH VAPOR-TREATING AND HEAT EXCHANGE ZONES OF CONTACT, PASSING SAID MATERIALS IN COUNTER-CURRENT RELATION THROUGH A VAPORTREATING ZONE WITHOUT APPRECIABLE VIBRATORY MOTION OF SAID SOLID MATERIAL THEREIN, PASSING SAID MATERIALS AS A RESTRICTED STREAM OF SUCH MATERIALS THROUGH AN INDIRECT HEAT EXCHANGE ZONE, AND INCREASING THE RELATIVE VELOCITY FLOW OF VAPOROUS MATERIALS UPWARDLY THROUGH THE HEAT EXCHANGE ZONE, INDUCING VIBRATORY MOTION OF THE SOLID MATERIALS THEREIN WHILE MAINTAINING DOWNWARD FLOW OF SAID SOLID MATERIAL THERETHROUGH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |