US2870002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fluidization
Assignee: Texas Gulf Sulphur Co
•
Filing: 1952-06-26
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Granted: 1959-01-20
•
Expires: 1972-06-26
Abstract
No abstract record available.
Inventors
- 👤 Axel R Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; B01J8/28; C; C22; C22B; C22B1/00; C22B1/02; C22B1/10; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A FLUIDIZED BED METHOD OF REACTING A GAS AND AN ORE THE STEPS COMPRISING ESTABLISHING SAID BED IN A SHAFT THE LOWER END OF WHICH OPENS FREELY INTO A CHAMBER OF SUBSTANTIALLY LARGER CROSS SECTIONAL AREA, CONTINUOUSLY FEEDING TO SAID BED ORE DISINTEGRABLE BY REACTION IN THE FORM OF LUMPS TOO LARGE TO BE FLUIDIZED AND BY REACTION DISINTEGRATING SUCH LUMPS INTO PARTICLES OF FLUIDIZABLE SIZE, CONTINUOUSLY PASSING SAID GAS INTO SAID CHAMBER AT A VELOCITY SUCH RELATIVE TO THE CROSS SECTIONAL AREA OF SAID SHAFT THAT THE INCREASED GAS VELOCITY IN THE SHAFT FLUIDIZES
Claim 2
Dependent Claim
96 words
IN A FLUIDIZED BED METHOD OF REACTING A GAS AND AN ORE THE STEPS COMPRISING ESTABLISHING SAID BED IN A SHAFT THE LOWER END OF WHICH OPENS FREELY INTO A CHAMBER OF SUBSTANTIALLY LARGER CROSS SECTIONAL AREA, CONTINUOUSLY FEEDING TO SAID BED ORE DISINTEGRABLE BY REACTION IN THE FORM OF LUMPS TOO LARGE TO BE FLUIDIZED AND BY REACTION DISINTEGRATING SUCH LUMPS INTO PARTICLES OF FLUIDIZABLE SIZE, CONTINUOUSLY PASSING SAID GAS INTO SAID CHAMBER AT A VELOCITY SUCH RELATIVE TO THE CROSS SECTIONAL AREA OF SAID SHAFT THAT THE INCREASED GAS VELOCITY IN THE SHAFT FLUIDIZES
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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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |