Patent US118994A successfully refreshed from Google Patents.
Patent US1842929A successfully refreshed from Google Patents.
US1842929A
Expired / Lapsed
US
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Process of preparing ergosterol
Assignee: Mead Johnson and Co LLC
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Filing: 1928-04-09
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Granted: 1932-01-26
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Expires: 1948-04-09
Abstract
No abstract record available.
Inventors
- 👤 Bills Charles Everett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:05
CPC Classifications
C; C12; C12N; C12N1/00; C12N1/06; C07; C07J; C07J75/00; C07J9/00; C12P; C12P19/00; C12P19/02
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) | 1935-01-25 | 1935-07-27 | 1936-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-01-25 | 1939-07-27 | 1940-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-01-25 | 1943-07-27 | 1944-01-26 | $7700.00 | Window Closed / Lapsed |