Patent US3150046A successfully refreshed from Google Patents.
US3150046A
Expired / Lapsed
US
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Antibiotic rifamycin b and method of production
Assignee: Gruppo Lepetit SpA
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Filing: 1960-03-04
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Granted: 1964-09-22
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Expires: 1980-03-04
Abstract
No abstract record available.
Inventors
- 👤 Sensi Piero
- 👤 Margalith Pinhas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:57
CPC Classifications
C; C12; C12P; C12P17/00; C12P17/18; C07; C07D; C07D498/00; C07D498/02; C07D498/08; C12N; C12N1/00; C12N1/20; C12N1/205; C12R; C12R2001/00; C12R2001/01; C12R2001/465; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
AN ANTIBIOTIC SUBSTANCE OF THE GROUP CONSISTING OF AN ANTIBIOTIC DEFINED AS RIFAMYCIN B, HAVING MELTING POINT OVER 300*, BEING ACIDIC IN NATURE, HAVING A MEAN ELEMENTAL ANALYSIS OF CARBON, 61.75% HYDROGEN, 6.72%, NITROGEN, 1.88%, AND OXYGEN, 29.22% AND THE SPECIFIC ROTATARY POWER (A)589**22-11*(C. 1, METHANOL), BEING VERY SLIGHTLY SOLUBLE IN WATER BENZENE, PRACTICALLY INSOLUBLE IN PETROLEUM ETHER, CARBON TETRACHLORIDE, ETHYL ETHER AND HYDROCARBONS, SLIGHTLY SOLUBLE IN ETHANOL, CHLOROFORM, ETHYL ACETATE AND ACETONE, SHOWING IN THE ULTRAVIOLET AND VISIBLE REGION OF THE SPECTRUM A SHOULDER AT 220-230 MU AND TWO MAXIMA AT 305 MU AND 430 MU IN WATER AND THREE MAXIMA AT 223 MU, 304 MU AND 425 MU IN PHOSPHATE BUFFER AT PH 7.3, AND EXHIBITING CHARACTERISTIC ABSORPTION BANDS IN THE INFRA RED REGION OF THE SPECTRUM WHEN SUSPENDED IN A HYDROCARBON OIL IN SOLID FORM AT THE FOLLOWING FREQUENCIES EXPRESSED IN RECIPROCAL CENTIMETERS: 3465, 330, 1742, 1730 (SHOULDER), 1705 (SHOULDER), 1673, 1602, 1575, 1550, 1445, 1342, 1300, 1267, 1240, (SHOULDER), 1205, 1180, 1165, 1102, 1073, 1048, 1020, 975, 948, 915, 905, 850, 795, 760, 730, 680, AND ITS ALKALI METAL AND AMINE SALTS.
Claim 2
Dependent Claim
186 words
AN ANTIBIOTIC SUBSTANCE OF THE GROUP CONSISTING OF AN ANTIBIOTIC DEFINED AS RIFAMYCIN B, HAVING MELTING POINT OVER 300*, BEING ACIDIC IN NATURE, HAVING A MEAN ELEMENTAL ANALYSIS OF CARBON, 61.75% HYDROGEN, 6.72%, NITROGEN, 1.88%, AND OXYGEN, 29.22% AND THE SPECIFIC ROTATARY POWER (A)589**22-11*(C. 1, METHANOL), BEING VERY SLIGHTLY SOLUBLE IN WATER BENZENE, PRACTICALLY INSOLUBLE IN PETROLEUM ETHER, CARBON TETRACHLORIDE, ETHYL ETHER AND HYDROCARBONS, SLIGHTLY SOLUBLE IN ETHANOL, CHLOROFORM, ETHYL ACETATE AND ACETONE, SHOWING IN THE ULTRAVIOLET AND VISIBLE REGION OF THE SPECTRUM A SHOULDER AT 220-230 MU AND TWO MAXIMA AT 305 MU AND 430 MU IN WATER AND THREE MAXIMA AT 223 MU, 304 MU AND 425 MU IN PHOSPHATE BUFFER AT PH 7.3, AND EXHIBITING CHARACTERISTIC ABSORPTION BANDS IN THE INFRA RED REGION OF THE SPECTRUM WHEN SUSPENDED IN A HYDROCARBON OIL IN SOLID FORM AT THE FOLLOWING FREQUENCIES EXPRESSED IN RECIPROCAL CENTIMETERS: 3465, 330, 1742, 1730 (SHOULDER), 1705 (SHOULDER), 1673, 1602, 1575, 1550, 1445, 1342, 1300, 1267, 1240, (SHOULDER), 1205, 1180, 1165, 1102, 1073, 1048, 1020, 975, 948, 915, 905, 850, 795, 760, 730, 680, AND ITS ALKALI METAL AND AMINE SALTS.
References Cited (Backward Citations)
US2999048A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |