Patent US1556067A successfully refreshed from Google Patents.
US1556067A
Expired / Lapsed
US
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Purification of butyric aldehyde
Assignee: Commercial Solvents Corp
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Filing: 1924-05-12
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Granted: 1925-10-06
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Expires: 1944-05-12
Abstract
No abstract record available.
Inventors
- 👤 Bogin Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:43
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/81; C07C45/82; C07C45/84
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) | 1928-10-05 | 1929-04-06 | 1929-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-10-05 | 1933-04-06 | 1933-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-10-05 | 1937-04-06 | 1937-10-06 | $7700.00 | Window Closed / Lapsed |