US2422230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of streptothricin
Assignee: Merck and Co Inc
•
Filing: 1943-09-11
•
Granted: 1947-06-17
•
Expires: 1963-09-11
Abstract
No abstract record available.
Inventors
- 👤 Jackson W Foster
- 👤 Woodruff Harold Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:13
CPC Classifications
C; C12; C12P; C12P19/00; C12P19/26; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/826
Claims Analysis
Total Claims: 0
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US2314831A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |