US2797183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nystatin and method of producing it
Assignee: Research Corp
•
Filing: 1952-01-07
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Granted: 1957-06-25
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Expires: 1972-01-07
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth L Hazen
- 👤 Rachel F Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:28
CPC Classifications
C; C12; C12P; C12P1/00; C12P1/06; C12R; C12R2001/00; C12R2001/01; C12R2001/465; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886; Y10S435/901
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
AN ANTIFUNGAL SUBSTANCE OBTAINED FROM THE MYCELIUM OF A CULTURE OF STREPTOMYCES NOURSEI, WHICH IS RELATIVELY INSOLUBLE IN WATER, SPARINGLY SOLUBLE IN THE LOWER ALCOHOLS AND LOWER ALKYL KETONES, CONTAINS CARBON, HYDROGEN AND NITROGEN, GIVES NO COLOR WITH FERRIC CHLORIDE, FAILS TO REACT IN TESTS FOR PROTEIN,M IS ACTIVE IN VIVO AND IN VITRO AGAINST MANY SAPROPHYTIC AND PATHOGENIC FUNGI AND EXHABITS CHARACTERISTIC ABSORPTION BANDS IN THE INFRARED REGION OF THE SPECTRUM WHEN SUPSPENDED IN SOLID FORM IN A HYDROCARBON OIL AT THE FOLLOWING FREQUENCIES EXPRESSED IN RECIPROCAL CENTIMETERS: 3356, 2898, 1706, 1623, 1575, 1543, 1466, 1387, 1349, 1292, 1178, 1130, 1107, 1073, 1031, 1005, 962, 947, 932, 907, 848, 801, 772, 752, 740, AND 710.
References Cited (Backward Citations)
US2482055A
Cited
US2481763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-24 | 1960-12-24 | 1961-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-24 | 1964-12-24 | 1965-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-24 | 1968-12-24 | 1969-06-25 | $7700.00 | Window Closed / Lapsed |