Patent US1928216A successfully refreshed from Google Patents.
Patent US3705225A successfully refreshed from Google Patents.
US3705225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing silk-like polyester yarn
Assignee: EIDP Inc
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Filing: 1971-06-01
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Granted: 1972-12-05
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Expires: 1991-06-01
Abstract
Abstract A SILK-LIKE APPEARANCE IS PROVIDED IN FABRIC BY POLYESTER YARN PREPARED BY MELT-SPINNING BRIGHT POLYMER CONTAINING SURFACE-MODIFYING AGENT THROUGH NON-ROUND SPINNERET ORIFICES TO PRODUCE ROUGH-SURFACEED FILAMENTS OF DIFFERENT CROSS-SECTIONS, AND DRAWING THE FILAMENTS TO 0.75-1.5 DENIER WITH A PART BEING SUBJECTED TO CONDITIONS DIFFERENT FROM OTHER FILAMENTS TO IMPART DIFFERENTIAL SHRINKABILITY. ALTERNATIVELY A DIFFERENT POLYMER COMPOSITION IS USED IN PART OF THE FILAMENTS TO IMPART DIFFERENTIAL SHRINKABILITY.
Inventors
- 👤 Robert Edward Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:19
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01D; D01D5/00; D01D5/253; D01F6/00; D01F6/58; D01F6/62
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |