Patent US2999051A successfully refreshed from Google Patents.
US2999051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of producing 1-tryptophane
Assignee: Eli Lilly and Co
•
Filing: 1957-02-06
•
Granted: 1961-09-05
•
Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 Malin Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:27
CPC Classifications
C; C12; C12P; C12P13/00; C12P13/04; C12P13/22; C12P13/227; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/911; Y10S435/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR PRODUCING L-TRYTOPHANE WHICH COMPRISES FERMENTING AN AQUEOUS NUTRIENT MEDIUM UNDER SUBMERGED AERATED CONDITIONS BY MEANS OF AN INDOLE-CONVERTING L-TRYPTOPHANE-PRODUCING STRAIN OF A SPECIES OF ORGANISM OF THE SUB-PHYLUM FUNGI, OF THE GROUP CONSISTING OF THE CLASS ASCOMYCETA, THE CLASS PHYCOMYCETA, ADDING 0.01 PERCENT BY WEIGHT OF INDOLE TO SAID FERMENTATION, AND REPLACING SAID INDOLE AS IT IS UTILIZED IN THE FERMENTATION UNTIL AN AMOUNT OF UNCOMBINED EXTRACELLULAR L-TRYPTOPHANE SUBSTANTIALLY IN EXCESS OF 0.1 PERCENT BY WEIGHT HAS ACCUMULATED.
Claim 2
Dependent Claim
81 words
A PROCESS FOR PRODUCING L-TRYTOPHANE WHICH COMPRISES FERMENTING AN AQUEOUS NUTRIENT MEDIUM UNDER SUBMERGED AERATED CONDITIONS BY MEANS OF AN INDOLE-CONVERTING L-TRYPTOPHANE-PRODUCING STRAIN OF A SPECIES OF ORGANISM OF THE SUB-PHYLUM FUNGI, OF THE GROUP CONSISTING OF THE CLASS ASCOMYCETA, THE CLASS PHYCOMYCETA, ADDING 0.01 PERCENT BY WEIGHT OF INDOLE TO SAID FERMENTATION, AND REPLACING SAID INDOLE AS IT IS UTILIZED IN THE FERMENTATION UNTIL AN AMOUNT OF UNCOMBINED EXTRACELLULAR L-TRYPTOPHANE SUBSTANTIALLY IN EXCESS OF 0.1 PERCENT BY WEIGHT HAS ACCUMULATED.
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) | 1964-09-04 | 1965-03-06 | 1965-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-04 | 1969-03-06 | 1969-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-04 | 1973-03-06 | 1973-09-05 | $7700.00 | Window Closed / Lapsed |