US2068010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of acetaldehyde
Assignee: Henry Dreyfuss Associates LLC
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Filing: 1932-08-22
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Granted: 1937-01-19
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Expires: 1952-08-22
Abstract
No abstract record available.
Inventors
- 👤 Dreyfus Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:50
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/38; C07C45/78; C07C45/80
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) | 1940-01-19 | 1940-07-20 | 1941-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-01-19 | 1944-07-20 | 1945-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-01-19 | 1948-07-20 | 1949-01-19 | $7700.00 | Window Closed / Lapsed |