US2995497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for treatment of a liquid with a gaseous medium, or viceversa
Assignee: Biochemical Processes Inc
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Filing: 1958-01-20
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Granted: 1961-08-08
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Expires: 1978-01-20
Abstract
No abstract record available.
Inventors
- 👤 Heden Carl Goran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:48
CPC Classifications
C; C12; C12M; C12M29/00; C12M29/24; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; C12M41/00; C12M41/02; Y; Y10; Y10S; Y10S435/00; Y10S435/812; Y10S435/813; Y10S435/818
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A METHOD OF TREATING A LIQUID WITH A GASEOUS MEDIUM WHICH COMPRISES ESTABLISHING AND MAINTAINING A BODY OF LIQUID BENEATH A BODY OF GAS WITHIN A CONFINED SPACE, ADMITTING GAS TO THE SYSTEM FROM BENEATH THE SURFACE OF THE LIQUID, SYSTEMATICALLY VARYING THE EXTERNAL PRESSURE OF THE GAS BEING ADMITTED SO THAT IT ALTERNATELY EXCEEDS AND IS EXCEEDED BY THE PRESSURE OF THE CONFINED GAS AND WITHDRAWING GAS DIRECTLY FROM SAID GAS SPACE WHEN THE EXTERNAL PRESSURE IS EXCEEDED BY THE PRESSURE OF THE CONFINED GAS, WHEREBY GAS IS ALTERNATELY FORCED TO BUBBLE UPWARDLY THROUGH THE LIQUID AND THEN WITHDRAWN FROM THE SAID GAS SPACE, AND RECYCLING AT LEAST A PART OF THE WITHDRAWN GAS THROUGH THE BODY OF LIQUID.
Claim 2
Independent Claim
120 words
A METHOD OF TREATING A LIQUID WITH A GASEOUS MEDIUM WHICH COMPRISES ESTABLISHING AND MAINTAINING A BODY OF LIQUID BENEATH A BODY OF GAS WITHIN A CONFINED SPACE, ADMITTING GAS TO THE SYSTEM FROM BENEATH THE SURFACE OF THE LIQUID, SYSTEMATICALLY VARYING THE EXTERNAL PRESSURE OF THE GAS BEING ADMITTED SO THAT IT ALTERNATELY EXCEEDS AND IS EXCEEDED BY THE PRESSURE OF THE CONFINED GAS AND WITHDRAWING GAS DIRECTLY FROM SAID GAS SPACE WHEN THE EXTERNAL PRESSURE IS EXCEEDED BY THE PRESSURE OF THE CONFINED GAS, WHEREBY GAS IS ALTERNATELY FORCED TO BUBBLE UPWARDLY THROUGH THE LIQUID AND THEN WITHDRAWN FROM THE SAID GAS SPACE, AND RECYCLING AT LEAST A PART OF THE WITHDRAWN GAS THROUGH THE BODY OF LIQUID.
References Cited (Backward Citations)
US1608251A
Cited
US2361137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |