US2908612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphotericin a and its salts
Assignee: Olin Corp
•
Filing: 1957-03-25
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Granted: 1959-10-13
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Expires: 1977-03-25
Abstract
No abstract record available.
Inventors
- 👤 James D Dutcher
- 👤 Gold William
- 👤 Joseph F Pagano
- 👤 Vandeputte John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:07
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/70; A61K31/7042; A61K31/7048; C; C07; C07H; C07H17/00; C07H17/04; C07H17/08; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A SUBSTANCE EFFECTIVE IN INHIBITING THE GROWTH OF FUNGI, SELECTED FROM THE GROUP CONSISTING OF AMPHOTERICIN A AND THE SALTS THEREOF, SAID AMPHOTERICIN A BEING AN AMPHOTERIC SUBSTANCE HAVING THE FOLLOWING ELEMENTARY ANALVSIS: C=59.28%, H=8.43%, N=1.81%, O=30.48%, THAT POSSESSES A CRYSTALLINE STRUCTURE IN THE PURE STATE; HAS A SPECIFIC OPTICAL ROTATION, AS MEASURED BY THE D LINE OF SODIUM AT 24* C. OF +163* IN PYRIDINE, +93* IN ACETIC ACID, +136*C. IN DIMETHYL FORMAMIDE AND +28* IN 0.1 N HCL IN METHANOL; IS SOLUBLE IN GLACIAL ACETIC ACID AND DIMETHYL FORMAMIDE; HAS AN ULTRAVIOLET ABSORPTION SPECTRUM MEASURED IN METHANOLIC HCL WITH BANDS AT THE FOLLOWING WAVE LENGTHS: HAS AN ULTRAVIOLET ABSORPTION SPECTRUM RESPECTIVE EXTINCTION COEFFICIENTS OF 280, 520, 780 AND 715; AN INFRARED ABSORPTION SPECTRUM WHEN SUSPENDED IN HYDROCARBON OIL IN SOLID FORM AS SHOWN IN THE DRAWING; AND A NEUTRAL EQUIVALENT WHEN TITRATED AS A BASE OF ABOUT 929 AND AS AN ACID OF ABOUT 989.
Claim 2
Dependent Claim
157 words
A SUBSTANCE EFFECTIVE IN INHIBITING THE GROWTH OF FUNGI, SELECTED FROM THE GROUP CONSISTING OF AMPHOTERICIN A AND THE SALTS THEREOF, SAID AMPHOTERICIN A BEING AN AMPHOTERIC SUBSTANCE HAVING THE FOLLOWING ELEMENTARY ANALVSIS: C=59.28%, H=8.43%, N=1.81%, O=30.48%, THAT POSSESSES A CRYSTALLINE STRUCTURE IN THE PURE STATE; HAS A SPECIFIC OPTICAL ROTATION, AS MEASURED BY THE D LINE OF SODIUM AT 24* C. OF +163* IN PYRIDINE, +93* IN ACETIC ACID, +136*C. IN DIMETHYL FORMAMIDE AND +28* IN 0.1 N HCL IN METHANOL; IS SOLUBLE IN GLACIAL ACETIC ACID AND DIMETHYL FORMAMIDE; HAS AN ULTRAVIOLET ABSORPTION SPECTRUM MEASURED IN METHANOLIC HCL WITH BANDS AT THE FOLLOWING WAVE LENGTHS: HAS AN ULTRAVIOLET ABSORPTION SPECTRUM RESPECTIVE EXTINCTION COEFFICIENTS OF 280, 520, 780 AND 715; AN INFRARED ABSORPTION SPECTRUM WHEN SUSPENDED IN HYDROCARBON OIL IN SOLID FORM AS SHOWN IN THE DRAWING; AND A NEUTRAL EQUIVALENT WHEN TITRATED AS A BASE OF ABOUT 929 AND AS AN ACID OF ABOUT 989.
References Cited (Backward Citations)
US712547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |