US2542031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fermentor for submerged cultures
Assignee: Individual
•
Filing: 1947-09-12
•
Granted: 1951-02-20
•
Expires: 1967-09-12
Abstract
No abstract record available.
Inventors
- 👤 Humfeld Harry
- 👤 Aeschlimann Ernst
- 👤 John R Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:32
CPC Classifications
C; C12; C12M; C12M27/00; C12M27/02; Y; Y10; Y10S; Y10S435/00; Y10S435/812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A FERMENTOR COMPRISING A VESSEL, MEANS FOR INTRODUCING A GAS INTO THE BODY OF LIQUID THEREIN, COMPRISING MEANS IN SAID VESSEL MOUNTED FOR ROTATION ABOUT A VERTICAL AXIS, SAID MEANS PROVIDING AN AXIAL CHAMBER, AND PROVIDING LATERAL PASSAGEWAYS COMMUNICATING WITH SAID CHAMBER, UPWARDLY AND OUTWARDLY EXTENDING VANES MOUNTED FOR ROTATION WITH SAID PASSAGEWAYS AND MOUNTED ADJACENT SAID PASSAGEWAYS, SAID AXIAL CHAMBER HAVING A LOWER INLET COMMUNICATING THROUGH A PASSAGEWAY WITH THE BODY OF LIQUID, A CONDUIT COMMUNICATING AT ONE END WITH A SOURCE OF THE GAS AND AT THE OTHER END WITH SAID LOWER INLET.
Claim 2
Dependent Claim
95 words
A FERMENTOR COMPRISING A VESSEL, MEANS FOR INTRODUCING A GAS INTO THE BODY OF LIQUID THEREIN, COMPRISING MEANS IN SAID VESSEL MOUNTED FOR ROTATION ABOUT A VERTICAL AXIS, SAID MEANS PROVIDING AN AXIAL CHAMBER, AND PROVIDING LATERAL PASSAGEWAYS COMMUNICATING WITH SAID CHAMBER, UPWARDLY AND OUTWARDLY EXTENDING VANES MOUNTED FOR ROTATION WITH SAID PASSAGEWAYS AND MOUNTED ADJACENT SAID PASSAGEWAYS, SAID AXIAL CHAMBER HAVING A LOWER INLET COMMUNICATING THROUGH A PASSAGEWAY WITH THE BODY OF LIQUID, A CONDUIT COMMUNICATING AT ONE END WITH A SOURCE OF THE GAS AND AT THE OTHER END WITH SAID LOWER INLET.
References Cited (Backward Citations)
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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) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |