Patent US2526439A successfully refreshed from Google Patents.
US2526439A
Expired / Lapsed
US
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Coating compositions
Assignee: Wyeth Holdings LLC
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Filing: 1946-12-23
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Granted: 1950-10-17
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Expires: 1966-12-23
Abstract
No abstract record available.
Inventors
- 👤 Jack T Thurston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:06
CPC Classifications
C; C09; C09D; C09D161/00; C09D161/20; C09D161/22; C09D161/24; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A COATING COMPOSITION COMPRISING AN AMINOPLASTIC RESIN SLECTED FROMT HE GROUP CONSISTING OF UREA-FORMALDEHYDE RESINS AND MELAMINEFORMALDEHYDE RESINS, IN A VOLATILE ORGANIC DISPERSION MEDIUM, AND 1%-5% OF A PHOSPHORIC ACID DERIVATIVE OF A SATURATED HYDROXY ALIPHATIC ESTER CONTAINING 4-8 CARBON ATOMS, WHEREIN SAID HYDROXY GROUP IS ATTACHED TO THE ACID PORITON OF SAID ESTER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |