US3592740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cell culture concentrates
Assignee: NILES LAB Inc
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Filing: 1968-03-28
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Granted: 1971-07-13
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Expires: 1988-03-28
Abstract
Abstract NOVEL CELL CULTURE CONCENTRATES HAVING IMPROVED ACTIVITY CAN BE PREPARED BY A PROCESS OF INOCULATING A LIQUID BUFFERED MILK-CONTAINING CULTURE MEDIUM WITH AN APPROPRIATE LACTIC ACID-PRODUCING BACTERIAL CULTURE, INCUBATING SAID INOCULATED MEDIUM TO GROW BACTERIAL CULTURE CELLS THEREIN UNTIL A DESIRED PH LEVEL IS ATTAINED, ADDING ALKALINE MATERIAL TO RAISE THE MEDIUM PH TO A DESIRED LEVEL, COOLING THE MEDIUM AND SEPARATING THE BACTERIAL CULTURE CELLS FROM THE LIQUID PROTION OF THE CULTURE MEDIUM TO FORM A CELL CULTURE CONCENTRATE.
Inventors
- 👤 Verle Wayne Christensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:11
CPC Classifications
A; A23; A23C; A23C19/00; A23C19/02; A23C19/032; A23C19/0323; C; C12; C12N; C12N1/00; C12N1/04; A23C2220/00; A23C2220/20; A23C2220/208; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/885
Claims Analysis
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |