Patent US2457585A successfully refreshed from Google Patents.
US2457585A
Expired / Lapsed
US
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Method of producing penicillins
Assignee: ER Squibb and Sons LLC
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Filing: 1944-06-10
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Granted: 1948-12-28
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Expires: 1964-06-10
Abstract
No abstract record available.
Inventors
- 👤 Robert B Mccormack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:42
CPC Classifications
C; C12; C12P; C12P37/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/832; Y10S435/836
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525823A
Cited
US1148938A
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US1391219A
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US1460736A
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US2291009A
Cited
US2325368A
Cited
US2352168A
Cited
GB579937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-28 | 1952-06-28 | 1952-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-28 | 1956-06-28 | 1956-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-28 | 1960-06-28 | 1960-12-28 | $7700.00 | Window Closed / Lapsed |