US3306809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable polyepoxide and glycol polyamine compositions
Assignee: Union Carbide Corp
•
Filing: 1961-08-21
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Granted: 1967-02-28
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Frank L Williamson
- 👤 Richard J Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:17
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; C08G59/58; C08G59/504; C08L; C08L63/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31518
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
20 words
CURABLE COMPOSITION COMPRISING A POLYEPOXIDE HAVING AN EPOXY EQUIVALENCY OF GREATER THAN ONE, AND A GLYCOL POLYAMINE OF THE FORMULA:
Claim 2
Dependent Claim
20 words
CURABLE COMPOSITION COMPRISING A POLYEPOXIDE HAVING AN EPOXY EQUIVALENCY OF GREATER THAN ONE, AND A GLYCOL POLYAMINE OF 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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |