Patent US3752742A successfully refreshed from Google Patents.
US3752742A
Expired / Lapsed
US
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Process and apparatus for the aerobic fermentation of substrates
Assignee: Knapsack AG
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Filing: 1971-08-30
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Granted: 1973-08-14
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Expires: 1991-08-30
Abstract
Abstract SUBSTRATES ARE SUBJECTED TO CONTINUOUS AEROBIC FERMENTATION OR HIGHLY POLLUTED EFFULENT FROM ORGANIC CHEMICAL PRODUCTION FACILITIES IS CONTINUOUSLY PURIFIED IN THE PRESENCE OF MICRO-ORGANISMS IN A BIOCHEMICAL REACTION ZONE BY AERATION WITH AN OXYGEN-CONTAINING GAS. THE THIS END THE OXYGEN-CONTAINING GAS IN INTRODUCED INTO THE BIOCHEMICAL REACTION ZONE HAVING A LIQUID PHASE THEREIN, AND WHILE FLOWING THERETHROUGH, IT IS CONTINUALLY TRANSFORMED WITH THE RESULTANT FORMATION OF FRESH-SURFACED GAS BUBBLES AND REDUCTION OF THE TIME OF CONTACT BETWEEN THE GAS IN THE BUBBLES AND THE LIQUID PHASE AT ANY SURFACE THEREBETWEEN.
Inventors
- 👤 G Jaekel
- 👤 D Kirstein
- 👤 K Karrenbauer
- 👤 E Goedicke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:01
CPC Classifications
C; C02; C02F; C02F3/00; C02F3/02; C02F3/12; C02F3/14; C02F3/18; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2334; B01F23/23342; B01F35/00; B01F35/50; Y; Y02; Y02W; Y02W10/00; Y02W10/10; Y10; Y10S; Y10S435/00; Y10S435/818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |