Patent US2640842A successfully refreshed from Google Patents.
US2640842A
Expired / Lapsed
US
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Metal-aureomycin complexes
Assignee: Wyeth Holdings LLC
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Filing: 1949-08-10
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Granted: 1953-06-02
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Expires: 1969-08-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Weidenheimer
- 👤 Charles C Reed
- 👤 Ritter Lawrence
- 👤 Sidney D Upham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:58
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
79 words
A METHOD OF PREPARING AN AUREOMYOINMETALLIC HALIDE COMPLEX WHICH COMPRISES REACTING AUREOMYCIN IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALCOHOLS AND KETONES AND WATER, SAID WATER BEING AT A PH BELOW 6, WITH A METALLIC HALIDE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES OF ALUMINUM, COBALT, AND MAGNESIUM, IN THE PRESENCE OF AT LEAST SUFFICIENT BASE TO NEUTRALIZE ANY ACID ASSOCIATED WITH THE AUREOMYCIN, REMOVING THE SOLVENT, AND RECOVERING THE THUS FORMED AUREOMYCIN-METALLIC HALIDE COMPLEX.
Claim 2
Independent Claim
79 words
A METHOD OF PREPARING AN AUREOMYOINMETALLIC HALIDE COMPLEX WHICH COMPRISES REACTING AUREOMYCIN IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC ALCOHOLS AND KETONES AND WATER, SAID WATER BEING AT A PH BELOW 6, WITH A METALLIC HALIDE SELECTED FROM THE GROUP CONSISTING OF THE HALIDES OF ALUMINUM, COBALT, AND MAGNESIUM, IN THE PRESENCE OF AT LEAST SUFFICIENT BASE TO NEUTRALIZE ANY ACID ASSOCIATED WITH THE AUREOMYCIN, REMOVING THE SOLVENT, AND RECOVERING THE THUS FORMED AUREOMYCIN-METALLIC HALIDE COMPLEX.
Claim 3
Dependent Claim
5 words
AN AUREOMYCIN COBALT CHLORIDE COMPLEX.
Claim 4
Dependent Claim
5 words
AN AUREOMYCIN COBALT CHLORIDE COMPLEX.
References Cited (Backward Citations)
US2474758A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |