Patent US2196247A successfully refreshed from Google Patents.
Patent US2290946A successfully refreshed from Google Patents.
US2290946A
Expired / Lapsed
US
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Formaldehyde-urea adhesive
Assignee: Individual
•
Filing: 1940-08-01
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Granted: 1942-07-28
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Expires: 1960-08-01
Abstract
No abstract record available.
Inventors
- 👤 William C Dearing
- 👤 Kenneth D Meiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
C; C09; C09J; C09J161/00; C09J161/20; C09J161/22; C09J161/24; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/26; C08L2666/54
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) | 1945-07-27 | 1946-01-26 | 1946-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-07-27 | 1950-01-26 | 1950-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-07-27 | 1954-01-26 | 1954-07-28 | $7700.00 | Window Closed / Lapsed |