US3743582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fermentation utilizing a multi-stage fermenting device
Assignee: Sanraku Ocean Co Ltd
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Filing: 1970-05-27
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Granted: 1973-07-03
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Expires: 1990-05-27
Abstract
Abstract A METHOD OF FERMENTATION UTILIZING A MULTI-STAGE FERMENTING DEVICE, WHICH COMPRISES THE STEP OF CULTURING MICRO-ORGANISMS AEROBICALLY OR ANAEROBICALLY, IN A DEVICE COMPRISING A VERTICAL STACK OF COMPARTMENTS SEPARATED BY HORIZONTAL PLATES PROVIDED WITH ONE OR MORE HOLES BY INTRODUCING GAS AND CULTURE MEDIUM FROM THE BOTTOM AND MAINTAINING A LAYER OF GAS BENEATH EACH PLATE WHICH PREVENTS BACKFLOW OF MEDIUM FROM ANY COMPARTMENT TO ONE THEREBELOW.
Inventors
- 👤 A Kitai
- 👤 H Tone
- 👤 A Ozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:22
CPC Classifications
C; C12; C12M; C12M23/00; C12M23/34; C12M27/00; C12M27/18; C12M27/22; Y; Y10; Y10S; Y10S435/00; Y10S435/813
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |