Patent US2442942A successfully refreshed from Google Patents.
US2442942A
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Recovery of acetaldehyde from gaseous mixtures containing the same
Assignee: Distillers Co Yeast Ltd
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Filing: 1943-01-07
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Granted: 1948-06-08
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Expires: 1963-01-07
Abstract
No abstract record available.
Inventors
- 👤 Tuerck Karl Heinrich Walter
- 👤 Brittain Eric Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:48
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/78; C07C45/783; C07C45/85
Claims Analysis
Total Claims: 0
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US1600113A
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US2068010A
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US2327570A
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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) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |