Patent US3756916A successfully refreshed from Google Patents.
US3756916A
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US
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Tants obtained therefrom method of isolating amino acid producing mutant microorganisms and mu
Assignee: Mobil Oil AS
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Filing: 1971-03-29
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Granted: 1973-09-04
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Expires: 1991-03-29
Abstract
Abstract A METHOD OF ISOLATING A MUTANT STRAIN OF AN AMINO ACID-PRODUCING MICROORGANISM, WHICH MUTANT PRODUCES SAID AMINO ACID AT A GREATER RATE THAN NORMALLY PRODUCED BY ITS MICROORGANISM PARENT, BY THE STEP OF CULTURING THE MICROORGANISM PARENT IN THE PRESENCE OF (1) AN ANTIMETABOLITE AND (2) A CO-INHIBITOR AGENT, THEREBY INHIBITING THE GROWTH OF THE NORMAL MICROORGANISM, ISOLATING AND SUBCULTURING THE MUTANT AND OBTAINING THE DESIRED AMINO ACID.
Inventors
- 👤 R Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:34
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/08
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |