Patent US1275565A successfully refreshed from Google Patents.
Patent US3734887A successfully refreshed from Google Patents.
US3734887A
Expired / Lapsed
US
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Compositions of polyamide of 2,2,4-and/or 2,4,4-trimethylhexamethylene diamines and epoxy compounds
Assignee: Veba Oel AG
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Filing: 1970-09-21
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Granted: 1973-05-22
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Expires: 1990-09-21
Abstract
Abstract PLASTIC OF POLYAMIDE OF 2,2,4- AND/OR 2,4,4-TRIMETHYLHEXAMETHYLENEDIAMINE, AND AN EPOXY COMPOUND. THE PLASTIC IS USEFUL FOR PRODUCTON OF SHAPED ARTICLES AND COATINGS.
Inventors
- 👤 K Schmitt
- 👤 F Gude
- 👤 S Brandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:04
CPC Classifications
C; C08; C08L; C08L63/00; C08L77/00; C08L77/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |