Patent US6273878B1 successfully refreshed from Google Patents.
US2931742A
Expired / Lapsed
US
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Process of coating substrate with composition comprising carboxyl-containing copolymer and amine-aldehyde condensate
Assignee: Celanese Coatings Co
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Filing: 1956-02-09
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Granted: 1960-04-05
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Expires: 1976-02-09
Abstract
No abstract record available.
Inventors
- 👤 Darrell D Hicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:18
CPC Classifications
C; C09; C09D; C09D157/00; C08; C08F; C08F220/00; C08F220/02; C08F220/04; C08F220/06; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C09D125/00; C09D125/02; C09D125/04; C09D125/08; C09D125/14; C09D161/00; C09D161/20; C08L61/00; C08L61/20
Claims Analysis
Total Claims: 0
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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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |