US3193390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of yeasts
Assignee: BP PLC
•
Filing: 1961-08-15
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Granted: 1965-07-06
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Expires: 1981-08-15
Abstract
No abstract record available.
Inventors
- 👤 Champagnat Alfred
- 👤 Filosa Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:49
CPC Classifications
C; C10; C10G; C10G32/00; C12; C12N; C12N1/00; C12N1/26; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/921; Y10S435/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR THE PRODUCTION OF FOOD YEAST WHICH COMPRISES MAINTAINING A STRAIGHT CHAIN PARAFFINIC HYDROCARBON-CONSUMING YEAST IN A NUTRIENT MEDIUM IN THE PRESENCE OF FEEDSTOCK OF PETROLEUM ORIGIN SELECTED FROM THE GROUP CONSISTING OF WAX FRACTIONS DERIVED BY DEWAXING OF LUBRICATING OIL FRACTIONS, SLACK WAX AND PARAFFINIC FEEDSTOCKS OBTAINED FROM PETROLEUM FRACTIONS BY MOLECULAR SIEVE SEPARATION AND A FREE OXYGEN-CONTAINING GAS UNDER CONDITIONS FAVORING GROWTH OF THE YEAST, SAID FEEDSTOCK HAVING AN AVERAGE MOLECULAR WEIGHT CORRESPONDING TO AT LEAST 10 CARBON ATOMS PER MOLECULE, AND SEPARATING THE YEAST FROM THE AQUEOUS MEDIUM.
Claim 2
Dependent Claim
93 words
A PROCESS FOR THE PRODUCTION OF FOOD YEAST WHICH COMPRISES MAINTAINING A STRAIGHT CHAIN PARAFFINIC HYDROCARBON-CONSUMING YEAST IN A NUTRIENT MEDIUM IN THE PRESENCE OF FEEDSTOCK OF PETROLEUM ORIGIN SELECTED FROM THE GROUP CONSISTING OF WAX FRACTIONS DERIVED BY DEWAXING OF LUBRICATING OIL FRACTIONS, SLACK WAX AND PARAFFINIC FEEDSTOCKS OBTAINED FROM PETROLEUM FRACTIONS BY MOLECULAR SIEVE SEPARATION AND A FREE OXYGEN-CONTAINING GAS UNDER CONDITIONS FAVORING GROWTH OF THE YEAST, SAID FEEDSTOCK HAVING AN AVERAGE MOLECULAR WEIGHT CORRESPONDING TO AT LEAST 10 CARBON ATOMS PER MOLECULE, AND SEPARATING THE YEAST FROM THE AQUEOUS MEDIUM.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |