US2374648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condensation products of n,n'-bis (alkoxymethyl) urea and processes for their production
Assignee: EIDP Inc
•
Filing: 1942-11-21
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Granted: 1945-05-01
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Expires: 1962-11-21
Abstract
No abstract record available.
Inventors
- 👤 William J Burke
- 👤 James H Werntz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:43
CPC Classifications
C; C08; C08G; C08G73/00; C07; C07G; C07G99/00; C07G99/002
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) | 1948-04-30 | 1948-10-30 | 1949-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-04-30 | 1952-10-30 | 1953-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-04-30 | 1956-10-30 | 1957-05-01 | $7700.00 | Window Closed / Lapsed |