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Patent US3403114A successfully refreshed from Google Patents.
US3403114A
Expired / Lapsed
US
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Polymers of amino epoxides
Assignee: Hercules LLC
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Filing: 1967-02-17
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Granted: 1968-09-24
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Expires: 1987-02-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin J Vandenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:03
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22
Claims Analysis
Total Claims: 0
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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) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |