Patent US3697482A successfully refreshed from Google Patents.
US3697482A
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Heat curable resins prepared from phenol,formaldehyde,dimethylolpropionic acid and an alkanolamine
Assignee: JERRY H HUNSUCKER
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Filing: 1971-04-07
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Granted: 1972-10-10
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Expires: 1991-04-07
Abstract
Abstract RESIN COMPOSITIONS SUITABLE FOR BAKED COATINGS CONSISTING OF THE CONDENSATION PRODUCT OF DIMETHYLOLPROPIONIC ACID (DMPA), WITH A LOWER ALIPHATIC ALDEHYDE AND A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOL, ALKYL PHENOL, AN ALKANOLAMINE OR MIXTURES THEREOF. A METHOD IS PROVIDED FOR COATING PAPER WITH THE COMPOSITION.
Inventors
- 👤 Jerry H Hunsucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:51
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; D21H17/51; C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/043; C08G12/046; C08G14/00; C08G14/02; C08G14/04; C08G14/06; D21H17/48
Claims Analysis
Total Claims: 0
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |