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US2485079A
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Colloidal melamine-urea-formaldehyde copolymer solutions
Assignee: Wyeth Holdings LLC
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Filing: 1944-01-04
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Granted: 1949-10-18
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Expires: 1964-01-04
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wohnsiedler
- 👤 Walter M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:42
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G12/36; C08G12/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2331446A
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US2255901A
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US2325375A
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US2315402A
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US2328425A
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US2345543A
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US2418525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-17 | 1953-04-18 | 1953-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-17 | 1957-04-18 | 1957-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-17 | 1961-04-18 | 1961-10-18 | $7700.00 | Window Closed / Lapsed |