Patent US3580810A successfully refreshed from Google Patents.
US3580810A
Expired / Lapsed
US
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Fermentative production of l-threonine
Assignee: Ajinomoto Co Inc
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Filing: 1968-07-26
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Granted: 1971-05-25
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Expires: 1988-07-26
Abstract
Abstract CERTAIN MUTANTS OF ESCHERICHIA COLI WHICH REQUIRE ISOLEUCINE FOR GROWTH AND CAN GROW IN THE PRESENCE OF MORE THAN 1 MG./1. A-AMINO-B-HYDROXY-VALERIC ACID IN AN OTHERWISE CONVENTIONAL CULTURE MEDIUM PRODUCE 6-THREONINE IN AMOUNTS OF SEVERAL GRAMS PER LITER OF THE MEDIUM.
Inventors
- 👤 Isamu Shiio
- 👤 Shigeru Nakamori
- 👤 Kounosuke Sano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:17
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/08; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/848; Y10S435/849
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |