Patent US3700558A successfully refreshed from Google Patents.
US3700558A
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US
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Production of l-tryptophan by fermentation
Assignee: Gruppo Lepetit SpA
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Filing: 1968-11-18
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Granted: 1972-10-24
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Expires: 1988-11-18
Abstract
Abstract THE INVENTION IS CONCERNED WITH THE IMPROVED PRODUCTION OF L-TRYPTOPHAN BY FERMENTATION OF A MICROORGANISM NAMED S-10 (ATCC NO. 21,336), OBTAINED BY MUTATION OF BACILLUS SUBTILIS. THE YIELDS OBTAINED, PARTICULARLY ON SYNTHETIC MEDIUM, ARE MUCH HIGHER THAN THOSE DESCRIBED IN PREVIOUS PROCESSES LF L-TRYPTOPHAN PRODUCTION.
Inventors
- 👤 Josef Ernst Thiemann
- 👤 Hermes Pagani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:11
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/22; C12P13/227; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/839
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |