Patent US3186922A successfully refreshed from Google Patents.
US3186922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering pure yeasts
Assignee: BP PLC
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Filing: 1961-08-15
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Granted: 1965-06-01
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Expires: 1981-08-15
Abstract
No abstract record available.
Inventors
- 👤 Champagnat Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:05
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/02; C12N1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE RECOVERY OF YEASTS WHICH HAVE BEEN GROWN IN THE PRESENCE OF HYDROCARBONS, WHICH COMPRISES ADDING TO A MIXTURE OF YEAST, AQUEOUS MINERAL MEDIUM AND HYDROCARBON, SO OBTAINED, AT LEAST 50 PARTS PER MILLION BY WEIGHT OF A SURFACE ACTIVE AGENT AND THEREAFTER CENTRIFUGING, WHEREBY THERE IS OBTAINED A PASTE COMPRISING YEAST AND AQUEOUS MINERAL MEDIUM.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE RECOVERY OF YEASTS WHICH HAVE BEEN GROWN IN THE PRESENCE OF HYDROCARBONS, WHICH COMPRISES ADDING TO A MIXTURE OF YEAST, AQUEOUS MINERAL MEDIUM AND HYDROCARBON, SO OBTAINED, AT LEAST 50 PARTS PER MILLION BY WEIGHT OF A SURFACE ACTIVE AGENT AND THEREAFTER CENTRIFUGING, WHEREBY THERE IS OBTAINED A PASTE COMPRISING YEAST AND AQUEOUS MINERAL 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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |