Patent US2910408A successfully refreshed from Google Patents.
US2910408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of n-acetylglucosamine
Assignee: Wyeth LLC
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Filing: 1956-12-28
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Granted: 1959-10-27
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Expires: 1976-12-28
Abstract
No abstract record available.
Inventors
- 👤 Pope Seth
- 👤 Zilliken Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:23
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; Y; Y10; Y10S; Y10S435/00; Y10S435/801; Y10S435/8215; Y10S435/911; Y10S435/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE PROCESS OF PRODUCING N-ACETYLGLUCOSAMINE WHICH COMPRISES PROPAGATING A MOLD OF THE ASPERGILLUS GENUS SELECTED FROM THE GROUP WHICH CONSISTS OF ASPERGILLUS TERREUS AND ASPERGILLUS ALLIACEUS SAID PROPAGATION BEING CARRIED OUT IN A NUTRIENT MEDIUM CONTAINING CHITIN, NITROGEN AND INORGANIC SALTS SUPPLYING THE ELEMENTS POTASSIUM, PHOSPHORUS, MAGNESIUM AND SULFUR, SAID NUTRIENT MEDIUM HAVING AN INITIAL PH, AT THE COMMENCEMENT OF THE PROPAGATION, FALLING WITHIN THE RANGE 3.5 TO 6.0, AND SAID PROPAGATION BEING CARRIED OUT UNDER AEROBIX CONDITIONS FOR A PERIOD OF TIME RANGING FROM ABOUT 20 TO ABOUT 24 HOURS AND AT A TEMPERATURE OF APPROXIMATELY 32*C.; AND THEN SATURATING SAID PROPAGATING MOLD AND MEDIUM WITH CARBON DIOXIDE GAS, WHEREBY THE N-ACETYLGLUCOSAMINE PRODUCED DURING THE FERMENTATION IS CONVERTED TO A FORM IN WHICH IT MAY BE READILY RECOVERED FROM SAID MEDIUM.
Claim 2
Dependent Claim
132 words
THE PROCESS OF PRODUCING N-ACETYLGLUCOSAMINE WHICH COMPRISES PROPAGATING A MOLD OF THE ASPERGILLUS GENUS SELECTED FROM THE GROUP WHICH CONSISTS OF ASPERGILLUS TERREUS AND ASPERGILLUS ALLIACEUS SAID PROPAGATION BEING CARRIED OUT IN A NUTRIENT MEDIUM CONTAINING CHITIN, NITROGEN AND INORGANIC SALTS SUPPLYING THE ELEMENTS POTASSIUM, PHOSPHORUS, MAGNESIUM AND SULFUR, SAID NUTRIENT MEDIUM HAVING AN INITIAL PH, AT THE COMMENCEMENT OF THE PROPAGATION, FALLING WITHIN THE RANGE 3.5 TO 6.0, AND SAID PROPAGATION BEING CARRIED OUT UNDER AEROBIX CONDITIONS FOR A PERIOD OF TIME RANGING FROM ABOUT 20 TO ABOUT 24 HOURS AND AT A TEMPERATURE OF APPROXIMATELY 32*C.; AND THEN SATURATING SAID PROPAGATING MOLD AND MEDIUM WITH CARBON DIOXIDE GAS, WHEREBY THE N-ACETYLGLUCOSAMINE PRODUCED DURING THE FERMENTATION IS CONVERTED TO A FORM IN WHICH IT MAY BE READILY RECOVERED FROM SAID 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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |