US3775393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ammonia extraction of unicellular microorganisms
Assignee: Standard Oil Co
•
Filing: 1970-12-03
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Granted: 1973-11-27
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Expires: 1990-12-03
Abstract
Abstract IMPROVED QUALITY SINGLE-CELL PROTEIN FOOD MATERIALS ARE PREPARED BY EXTRACTION OF UNICELLULAR MICROOGRANISMS WITH AQUEOUS AMMONIA AT 90* TO 125*C. FOR FROM 5 TO 60 MINUTES. NUCLEIC ACIDS ARE REMOVED FROM THE CELLS WHILE THE PROTEIN CONTENT REMAINS HIGH.
Inventors
- 👤 C Akin
- 👤 K Chao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:07
CPC Classifications
A; A23; A23J; A23J3/00; A23J3/20; C; C12; C12N; C12N1/00; C12N1/08; Y; Y10; Y10S; Y10S435/00; Y10S435/804; Y10S435/8215; Y10S435/822; Y10S435/911; Y10S435/921; Y10S435/94; Y10S435/941; Y10S435/942; Y10S530/00; Y10S530/82; Y10S530/821; Y10S530/823; Y10S530/824; Y10S530/825
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |