US3843787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water soluble derivative of erythromycin
Assignee: Pierrel SpA
•
Filing: 1972-12-08
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Granted: 1974-10-22
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Expires: 1992-12-08
Abstract
Abstract A new water soluble derivative of erythromycin, namely, erythromycin aspartate, is provided. The product is prepared by reacting erythromycin base with a substantially equimolar amount of aspartic acid or the ammonium salt of aspartic acid. The resulting erythomycin aspartate, which may be recovered as a white crystalline powder, is quite soluble in water and provides substantially neutral aqueous solutions which may be administered by the parenteral route, as well as by other modes of administration, for treatment of infections caused by grampositive bacteria.
Inventors
- 👤 G Fabrizio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:51
CPC Classifications
C; C07; C07H; C07H17/00; C07H17/04; C07H17/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
13 words
A PHARMACEUTICAL COMPOSITION CONSISTING ERYTHROMYCIN ASPARATE IN ASSOCIATION WITH A SUITABLE PHARMACEUTICAL VEHICLE.
Claim 2
Dependent Claim
13 words
A PHARMACEUTICAL COMPOSITION CONSISTING ERYTHROMYCIN ASPARATE IN ASSOCIATION WITH A SUITABLE PHARMACEUTICAL VEHICLE.
Claim 3
Dependent Claim
33 words
A pharmaceutical composition as claimed in claim 1, in which the vehicle is a sterile injectable solution or suspension medium, or a sterile powder providing a carrier for preparing a solution or suspension.
Claim 4
Dependent Claim
29 words
An aqueous solution for adding to animal drinking water containing erythromycin aspartate, prepared by dissolving in water a solid composition containing erythromycin aspartate with or without a water-soluble excipient.
Claim 5
Dependent Claim
29 words
An aqueous solution for adding to animal drinking water containing erythromycin aspartate, prepared by dissolving in water a solid composition containing erythromycin aspartate with or without a water-soluble excipient.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |