US3397178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardenable epoxy resin compositions
Assignee: General Mills Inc
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Filing: 1966-10-13
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Granted: 1968-08-13
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Expires: 1986-10-13
Abstract
No abstract record available.
Inventors
- 👤 William E Shackelford
- 👤 Warren J Fullen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:37
CPC Classifications
C; C07; C07C; C07C265/00; C07C265/12; C08; C08L; C08L63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A HARDENABLE COMPOSITION COMRISNG AMIXTURE OF (1) AN EPOXY RESIN HAVING A PLURALITY OF 1,2-EPOXIDE GROUPS AND (2) A DERIVATIVE OF AN ORGANIC ISOCYANATE AND A POLYAMINE HAVING AT LEAST ONE FREE SECONDARY AMINE GROUP AND AT LEAST TWO PRIMARY AMINE GROUPS, THE SAID PRIMARY AMINE GROUPS BEING BLOCKED Y ALDIMINE OR KETIMINE GROUPS, SAID DERIVATIVES HAVING BEEN PREPARED BY REACTING ABOUT EQUIVALENT AMOUNTS OF POLYAMINE WITH THE ISOCYANATE, THE EQUIVALENTS BEING BASED ON THE FREE SECDONARY AMINE GROUPS OF THE POLYAMINE AND THE ISOCYANATO GROUPS OF THE ISOCYANATE.
Claim 2
Dependent Claim
89 words
A HARDENABLE COMPOSITION COMRISNG AMIXTURE OF (1) AN EPOXY RESIN HAVING A PLURALITY OF 1,2-EPOXIDE GROUPS AND (2) A DERIVATIVE OF AN ORGANIC ISOCYANATE AND A POLYAMINE HAVING AT LEAST ONE FREE SECONDARY AMINE GROUP AND AT LEAST TWO PRIMARY AMINE GROUPS, THE SAID PRIMARY AMINE GROUPS BEING BLOCKED Y ALDIMINE OR KETIMINE GROUPS, SAID DERIVATIVES HAVING BEEN PREPARED BY REACTING ABOUT EQUIVALENT AMOUNTS OF POLYAMINE WITH THE ISOCYANATE, THE EQUIVALENTS BEING BASED ON THE FREE SECDONARY AMINE GROUPS OF THE POLYAMINE AND THE ISOCYANATO GROUPS OF THE ISOCYANATE.
References Cited (Backward Citations)
US3322797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |