Patent US2637679A successfully refreshed from Google Patents.
US2637679A
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Intramuscularly-administrable prolonged-action penicillin products
Assignee: Mathieson Chemical Corp
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Filing: 1948-07-14
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Granted: 1953-05-05
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Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 William E Gaunt
- 👤 Bartner Elliot
- 👤 Hans A Schaeffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:57
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/41; A61K31/425; A61K31/429; A61K31/43
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A SUBSTANTIALLY-DRY, STABLE COMPOSITION CAPABLE OF UNIFORM SUSPENSION IN AN AQUEOUS VEHICLE TO PROVIDE AN INTRAMUSCULARLY-ADMINISTRABLE, PROLONGED-ACTION, PENICILLIN PREPARATION, ESSENTIALLY COMPRISING A SUBSTANTIALLY WATER-INSOLUBLE SALT OF A PENICILLIN, AN INTRAMUSCULARLY-ACCEPTABLE SURFACE-ACTIVE AGENT, AND AN INTRAMUSCULARLY-ACCEPTABLE HYDROPHILLIC COLLOID.
Claim 2
Dependent Claim
37 words
A SUBSTANTIALLY-DRY, STABLE COMPOSITION CAPABLE OF UNIFORM SUSPENSION IN AN AQUEOUS VEHICLE TO PROVIDE AN INTRAMUSCULARLY-ADMINISTRABLE, PROLONGED-ACTION, PENICILLIN PREPARATION, ESSENTIALLY COMPRISING A SUBSTANTIALLY WATER-INSOLUBLE SALT OF A PENICILLIN, AN INTRAMUSCULARLY-ACCEPTABLE SURFACE-ACTIVE AGENT, AND AN INTRAMUSCULARLY-ACCEPTABLE HYDROPHILLIC COLLOID.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |