Patent US3914488A successfully refreshed from Google Patents.
US3914488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester filaments for fur-like fabrics
Assignee: EIDP Inc
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Filing: 1973-09-24
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Granted: 1975-10-21
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Expires: 1993-09-24
Abstract
Abstract Polyester filaments of 2 to 14 denier per filament having oblong cross sections of shapes illustrated are particularly useful in pile fabrics for providing fur-like aesthetics. In comparison with previous polyester fibers, the new fibers provide an improved smooth, non-tacky, resilient hand and pleasing luster, with freedom from fibrillation during processing or use of the fabric.
Inventors
- 👤 Adly Abdel-Moniem Gorrafa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:26
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/253; D10; D10B; D10B2501/00; D10B2501/04; D10B2501/044; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
A POLYESTER FILAMENT OF 2 TO 14 DENIER HAVING AN OBLONG CROSS SECTION, CONTINUOUSLY ALONG ITS LENGTH, CHARACTERIZED AS FOLLOWS: A. BY MAJOR AND MINOR AXES OF SYMMETRY WHICH ARE PERPENDICULAR TO EACH OTHER, B. BY A RATIO OF LENGTH A TO WIDTH B, MEASURED ALONG THE AXIS OF SYMMETRY, OF FROM 1.4 TO 2.4, C. BY A LOBE LOCATED ON EACH EXTREMITY OF THE MAJOR AXIS WHICH HAS A TIP RADIUS RATIO R1/R OF 0.20 TO 0.45, WHERE R1 IS THE RADIUS OF THE LOBE TIP AND R IS THE RADIUS OF A CIRCLE CIRCUMSCRIBED ABOUT THE CROSS SECTION, D. BY A LOBE LOCATED ON EACH EXTREMITY OF THE MINOR AXIS WHICH HAS A TIP RADIUS RATIO R2/R OF 0.8 TO 2.1 TIMES THE TIP RADIUS RATIO R1/R OF TE LOBES ON THE MAJOR ACIS, E. BY INDENTATIONS BETWEEN THE LOBES ON THE MAJOR AND MINOR AXES, AND F. BY THE SHORTEST DISTANCE D BETWEEN TWO INDENTATIONS ON OPPOSITE SIDES OF THE MAJOR AXIS BEING FROM 1.2 TO 2.0 TIES THE RADIUS R1 OF THE LOBES ON THE MAJOR AXIS,
Claim 2
Dependent Claim
181 words
A POLYESTER FILAMENT OF 2 TO 14 DENIER HAVING AN OBLONG CROSS SECTION, CONTINUOUSLY ALONG ITS LENGTH, CHARACTERIZED AS FOLLOWS: A. BY MAJOR AND MINOR AXES OF SYMMETRY WHICH ARE PERPENDICULAR TO EACH OTHER, B. BY A RATIO OF LENGTH A TO WIDTH B, MEASURED ALONG THE AXIS OF SYMMETRY, OF FROM 1.4 TO 2.4, C. BY A LOBE LOCATED ON EACH EXTREMITY OF THE MAJOR AXIS WHICH HAS A TIP RADIUS RATIO R1/R OF 0.20 TO 0.45, WHERE R1 IS THE RADIUS OF THE LOBE TIP AND R IS THE RADIUS OF A CIRCLE CIRCUMSCRIBED ABOUT THE CROSS SECTION, D. BY A LOBE LOCATED ON EACH EXTREMITY OF THE MINOR AXIS WHICH HAS A TIP RADIUS RATIO R2/R OF 0.8 TO 2.1 TIMES THE TIP RADIUS RATIO R1/R OF TE LOBES ON THE MAJOR ACIS, E. BY INDENTATIONS BETWEEN THE LOBES ON THE MAJOR AND MINOR AXES, AND F. BY THE SHORTEST DISTANCE D BETWEEN TWO INDENTATIONS ON OPPOSITE SIDES OF THE MAJOR AXIS BEING FROM 1.2 TO 2.0 TIES THE RADIUS R1 OF THE LOBES ON THE MAJOR AXIS,
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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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |