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US3282898A
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Treatment of aromatic polyamide-acids with carbodiimides
Assignee: EIDP Inc
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Filing: 1963-11-21
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Granted: 1966-11-01
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Expires: 1983-11-21
Abstract
No abstract record available.
Inventors
- 👤 Rudolph J Angelo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:02
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C08G67/00; Y; Y10; Y10S; Y10S525/00; Y10S525/928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3179632A
Cited
US3179633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |