US3000785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiramycins and their production
Assignee: Rhone Poulenc SA
•
Filing: 1956-01-12
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Granted: 1961-09-19
•
Expires: 1976-01-12
Abstract
No abstract record available.
Inventors
- 👤 Ninet Leon
- 👤 Preud Homme Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:43
CPC Classifications
A; A61; A61K; A61K36/00; A61K36/06; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
AN ANTIPOTIC SELECTED FROM THE GROUP OF SUBSTANCES HAVING THE FOLLOWING CHARACTERISTIC PROPERTIES: A BASIC SUBSTANCE SPIRAMYCIN I SOLUBLE IN CHLORINATED SOLVENTS, ALCOHOLS, HEXANE, AROMATIC HYDROCARBONS, KETONES, ETHYL ACETATE AND AMYL ACETATE AND CAPABLE OF FORMING SALTS WITH ACIDS, WHICH BASIC SUBSTANCE CONTAINS THE ELEMENTS CARBON, HYDROGEN, OXYGEN AND NITROGEN IN SUBSTANTIALLY THE FOLLOWING PROPORTIONS BY WEIGHT:
Claim 2
Dependent Claim
57 words
AN ANTIPOTIC SELECTED FROM THE GROUP OF SUBSTANCES HAVING THE FOLLOWING CHARACTERISTIC PROPERTIES: A BASIC SUBSTANCE SPIRAMYCIN I SOLUBLE IN CHLORINATED SOLVENTS, ALCOHOLS, HEXANE, AROMATIC HYDROCARBONS, KETONES, ETHYL ACETATE AND AMYL ACETATE AND CAPABLE OF FORMING SALTS WITH ACIDS, WHICH BASIC SUBSTANCE CONTAINS THE ELEMENTS CARBON, HYDROGEN, OXYGEN AND NITROGEN IN SUBSTANTIALLY THE FOLLOWING PROPORTIONS BY WEIGHT:
References Cited (Backward Citations)
US2617755A
Cited
US2691618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |