Patent US2183570A successfully refreshed from Google Patents.
US2183570A
Expired / Lapsed
US
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Process for the production of yeast
Assignee: Individual
•
Filing: 1937-07-28
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Granted: 1939-12-19
•
Expires: 1957-07-28
Abstract
No abstract record available.
Inventors
- 👤 Irvin Robert Roy
- 👤 Jr Morris W Mead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:10
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/14; C12N1/16; C12N1/18; Y; Y10; Y10S; Y10S435/00; Y10S435/813; Y10S435/818
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-12-18 | 1943-06-19 | 1943-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-18 | 1947-06-19 | 1947-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-18 | 1951-06-19 | 1951-12-19 | $7700.00 | Window Closed / Lapsed |