Patent US3702349A successfully refreshed from Google Patents.
US3702349A
Expired / Lapsed
US
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Low temperature curing process and coating compositions suitable therefor
Assignee: Dow Chemical Co
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Filing: 1970-04-29
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Granted: 1972-11-07
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Expires: 1990-04-29
Abstract
Abstract COATINGS MAY BE CURED BY THIS PROCESS BELOW 50*F. AND AT TEMPERATURES AS LOW AS~10%F. SUITABLE COATING COMPOSITIONS COMPRISES A SOLUTION IN AN INERT ORGANIC SOLVENT OF (1) A POLYAZIRIDINYL ADDUCT HAVING MORE THAN ONE AZIRIDINYL HYDROXYALKYL GROUP PER MOLECULE AND (2) A COREACTANT WHICH MAY BE A DICARBOXYLIC ACID ANHYDRIDE OR A POLYFUNCTIONAL MATERIAL HAVING MORE THAN ONE ANHYDRIDE, OXIRANE, THIOL, SULFONIC ACID OR CARBOXYLIC GROUP PER MOLECULE.
Inventors
- 👤 Thomas R Merlino
- 👤 John H Flickinger
- 👤 Russell T Mcfadden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:48
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053; C08G59/506; C08G59/5066; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |