Patent US2449140A successfully refreshed from Google Patents.
US2449140A
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Method of enhancing the yield of vitamins in fermentations
Assignee: Western Condensing Co
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Filing: 1944-11-11
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Granted: 1948-09-14
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Expires: 1964-11-11
Abstract
No abstract record available.
Inventors
- 👤 Henry L Pollard
- 👤 Nelson E Rodgers
- 👤 Reginald E Meade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:03
CPC Classifications
C; C12; C12P; C12P25/00; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1928379A
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US2050219A
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US2098200A
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US2128845A
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US2202161A
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US2297671A
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US2219426A
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US2369680A
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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) | 1951-09-14 | 1952-03-15 | 1952-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-14 | 1956-03-15 | 1956-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-14 | 1960-03-15 | 1960-09-14 | $7700.00 | Window Closed / Lapsed |