Patent US2959839A successfully refreshed from Google Patents.
US2959839A
Expired / Lapsed
US
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Linear condensation polymer fiber
Assignee: EIDP Inc
•
Filing: 1955-05-18
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Granted: 1960-11-15
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Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Craig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:12
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/2973; Y10T428/2975; Y10T442/00; Y10T442/30; Y10T442/3065; Y10T442/3089; Y10T442/3114; Y10T442/3976
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
FIBER COMPOSED OF LINEAR CONDENSATION POLYMER AND CHARACTERIZED BY TRANSVERSE CROSS SECTION HAVING AN
Claim 2
Dependent Claim
14 words
FIBER COMPOSED OF LINEAR CONDENSATION POLYMER AND CHARACTERIZED BY TRANSVERSE CROSS SECTION HAVING AN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-15 | 1964-05-16 | 1964-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-15 | 1968-05-16 | 1968-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-15 | 1972-05-16 | 1972-11-15 | $7700.00 | Window Closed / Lapsed |