US3707526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resins produced from the reaction of epoxides and dimethylol-propionic acid
Assignee: Novartis Corp
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Filing: 1970-11-16
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Granted: 1972-12-26
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Expires: 1990-11-16
Abstract
Abstract COATING SYSTEMS APPLICABLE BY CONVENTIONAL COATING TECHNIQUES AS WELL AS BY ELECTROPHORETIC COATING ARE PROVIDED BY REACTING A HYDROXYCARBOXYLIC ACID SUCH AS DIMETHYLOPROPIONIC ACID WITH AN EPOXY RESIN AND OPTIONALLY ANY OF A DIBASIC ACID AND A DIOL IN THE ABSENCE OF AN EXTERNALLY ADDED ESTERIFICATION CATALYST AND CURING THE THUS OBTAINED PRODUCT. A VARIETY OF COATING SYSTEMS IS OBTAINED INCLUDING WATER-SOLUBLE RESINS OBTAINED BY NEUTRALIZING WITH AN AMINE THE REACTION PRODUCT PRIOR TO CURING.
Inventors
- 👤 John Allister Gannon
- 👤 Arthur Allen Tracton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:08
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4423; C09D5/4426; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4292; C08G59/62; C08G59/621; C08G59/625; C08G63/00; C08G63/02; C08G63/60; C08L; C08L63/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |