US3822187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cultivation of micro-organismus
Assignee: CHAFFAUT J DU
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Filing: 1972-03-03
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Granted: 1974-07-02
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Expires: 1992-03-03
Abstract
Abstract A TWO STAGE CONTINUOUS PROCESS FOR THE PRODUCTION OF A MICRO-ORGANISM BY CULTIVATION ON A HYDROCARBON SUBSTRATE AND FOR IMPROVING A HYDROCARBON FEEDSTOCK, WHEREIN AN ESSENTIAL AQUEOUS PHASE NUTRIENT IS EITHER ABSENT FROM THE SECOND PHASE OR PRESENT IN INSUFFICIENT QUANTITY TO PERMIT UNIMPEDED GROWTH. PREFERABLY ADDITIONAL WATER IS PRESENT IN THE SECOND STAGE.
Inventors
- 👤 Chaffaut J Du
- 👤 B Laine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:35
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/14; C12N1/16; C12N1/20; Y; Y10; Y10S; Y10S435/00; Y10S435/813; Y10S435/8215; Y10S435/911; Y10S435/921; Y10S435/924
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |