US2848365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of neomycin by chromatography
Assignee: Pharmacia and Upjohn Co
•
Filing: 1950-03-13
•
Granted: 1958-08-19
•
Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 William G Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:23
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/22; C07H15/222; C07H15/226; C07H15/234; Y; Y10; Y10S; Y10S435/00; Y10S435/803
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2528022A
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US2550939A
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US2538479A
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US2501014A
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US2643997A
Cited
US2516080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |