Patent US3032462A successfully refreshed from Google Patents.
US3179614A
Expired / Lapsed
US
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Polyamide-acids, compositions thereof, and process for their preparation
Assignee: EIDP Inc
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Filing: 1961-03-13
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Granted: 1965-04-20
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Expires: 1981-03-13
Abstract
No abstract record available.
Inventors
- 👤 Edwards Walter Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:32
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C08G73/1007
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A SHAPEABLE POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST ONE POLYAMIDE-ACID HAVING THE FORMULA:
Claim 2
Dependent Claim
14 words
A SHAPEABLE POLYMERIC COMPOSITION CONSISTING ESSENTIALLY OF AT LEAST ONE POLYAMIDE-ACID HAVING 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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |