US2562225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Contacting gaseous materials with fluidized solids
Assignee: MW Kellogg Co
•
Filing: 1941-07-31
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Granted: 1951-07-31
•
Expires: 1961-07-31
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wickham
- 👤 Joseph W Moorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:01
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
THE METHOD OF EFFECTING THE CATALYTIC CONVERSION TREATMENT OF A GAS OR VAPOR WHICH METHOD COMPRISES INTRODUCING SAID GAS OR VAPOR AND HOT POWDERED CATALYST INTO AN UPFLOW REACTION ZONE AT A POINT SPACED FROM THE BOTTOM OF SAID ZONE, MAINTAINING A TURBULENT DENSE PHASE OF SUSPENDED CATALYST IN THE INTERMEDIATE PART OF SAID REACTION ZONE, SEPARATING CATALYST FROM GAS OR VAPOR LEAVING THE UPPER PART OF SAID REACTION ZONE, WITHDRAWING CATALYST FROM THE LOWER PART OF SAID DENSE PHASE REACTION ZONE TO A ZONE BELOW THE GAS OR VAPOR INLET THERETO, AERATING THE CATALYST IN SAID ZONE BELOW THE POINT OF CHARGING STOCK INLET AND WITHDRAWING CATALYST FROM THE BOTTOM OF SAID LAST NAMED ZONE.
Claim 2
Independent Claim
116 words
THE METHOD OF EFFECTING THE CATALYTIC CONVERSION TREATMENT OF A GAS OR VAPOR WHICH METHOD COMPRISES INTRODUCING SAID GAS OR VAPOR AND HOT POWDERED CATALYST INTO AN UPFLOW REACTION ZONE AT A POINT SPACED FROM THE BOTTOM OF SAID ZONE, MAINTAINING A TURBULENT DENSE PHASE OF SUSPENDED CATALYST IN THE INTERMEDIATE PART OF SAID REACTION ZONE, SEPARATING CATALYST FROM GAS OR VAPOR LEAVING THE UPPER PART OF SAID REACTION ZONE, WITHDRAWING CATALYST FROM THE LOWER PART OF SAID DENSE PHASE REACTION ZONE TO A ZONE BELOW THE GAS OR VAPOR INLET THERETO, AERATING THE CATALYST IN SAID ZONE BELOW THE POINT OF CHARGING STOCK INLET AND WITHDRAWING CATALYST FROM THE BOTTOM OF SAID LAST NAMED ZONE.
References Cited (Backward Citations)
DE533037C
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USRE21526E
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FR829582A
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US2264438A
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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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |