US2908606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimicrobial agents
Assignee: Pfizer Inc
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Filing: 1956-07-25
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Granted: 1959-10-13
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Philip N Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:30
CPC Classifications
A; A01; A01N; A01N63/00; A01N63/20; A01N63/28; Y; Y10; Y10S; Y10S424/00; Y10S424/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR THE PREPARATION OF A WATER-SOLUBLE COMPLEX OF A STREPTOMYCIN ANTIBIOTIC AND A WATER-SOLUBLE, INORGANIC SALT OF COPPER, WHICH COMPRISES REACTING A STREPTOMYCIN ANTIBIOTIC IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL AND WATER, WITH FROM ABOUT 0.5 TO 3 MOLECULAR PROPORTIONS OF WATER-SOLUBLE, INORGANIC CUPRIC SALT, WHILE MAINTAINING THE REACTION SOLUTION AT A PH BETWEEN ABOUT 2 AND 6.
Claim 2
Dependent Claim
64 words
A PROCESS FOR THE PREPARATION OF A WATER-SOLUBLE COMPLEX OF A STREPTOMYCIN ANTIBIOTIC AND A WATER-SOLUBLE, INORGANIC SALT OF COPPER, WHICH COMPRISES REACTING A STREPTOMYCIN ANTIBIOTIC IN A SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL AND WATER, WITH FROM ABOUT 0.5 TO 3 MOLECULAR PROPORTIONS OF WATER-SOLUBLE, INORGANIC CUPRIC SALT, WHILE MAINTAINING THE REACTION SOLUTION AT A PH BETWEEN ABOUT 2 AND 6.
References Cited (Backward Citations)
US2777791A
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 |