Patent US2341016A successfully refreshed from Google Patents.
US2341016A
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Condensation of aldehydes with carboxylic acids and their derivatives
Assignee: EIDP Inc
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Filing: 1941-09-09
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Granted: 1944-02-08
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Expires: 1961-09-09
Abstract
No abstract record available.
Inventors
- 👤 Brubaker Merlin Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:44
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/32; C07D207/33; C07D207/337; C07C; C07C57/00; C07C57/30; C07C57/42; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/54; C07D213/55; C07D307/00; C07D307/02; C07D307/34; C07D307/38; C07D307/54
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) | 1947-02-07 | 1947-08-09 | 1948-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-02-07 | 1951-08-09 | 1952-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-02-07 | 1955-08-09 | 1956-02-08 | $7700.00 | Window Closed / Lapsed |