US3900437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
New method for the preparation of polyamide adduct
Assignee: General Mills Chemicals Inc
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Filing: 1974-07-01
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Granted: 1975-08-19
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Expires: 1994-07-01
Abstract
Abstract A process for making polyamide resin-epoxide adducts in a onestep operational process wherein a monoepoxide reacts with a polyamine and the product of which subsequently reacts with an acid component.
Inventors
- 👤 Harold M Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:21
CPC Classifications
C; C08; C08G; C08G69/00; C08G59/00; C08G59/18; C08G59/182; C08G59/184; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A PROCESS COMPRISING HEATING A MIXTURE OF A. AN AMINE COMPONENT HAVING THE FORMULA
Claim 2
Dependent Claim
14 words
A PROCESS COMPRISING HEATING A MIXTURE OF A. AN AMINE COMPONENT HAVING THE FORMULA
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) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |