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Patent US3432575A successfully refreshed from Google Patents.
US3432575A
Expired / Lapsed
US
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Polyoctamethylene oxalamide blended with a second fiber forming linear polycarbonamide
Assignee: EIDP Inc
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Filing: 1962-07-10
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Granted: 1969-03-11
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Expires: 1982-07-10
Abstract
No abstract record available.
Inventors
- 👤 Joseph Zimmerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:18
CPC Classifications
C; C08; C08L; C08L77/00; C08L77/02; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08L77/06; C08L2205/00; C08L2205/02
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) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |