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Patent US2322979A successfully refreshed from Google Patents.
US2322979A
Expired / Lapsed
US
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Process of manufacturing alcohol modified urea formaldehyde resins
Assignee: Reichhold Chemicals Inc
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Filing: 1941-07-07
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Granted: 1943-06-29
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Expires: 1961-07-07
Abstract
No abstract record available.
Inventors
- 👤 Siegel Ernst Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:09
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422
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) | 1946-06-28 | 1946-12-28 | 1947-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-06-28 | 1950-12-28 | 1951-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-06-28 | 1954-12-28 | 1955-06-29 | $7700.00 | Window Closed / Lapsed |