US3623935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-entangled nonwoven fabric
Assignee: Celanese Corp
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Filing: 1967-12-04
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Granted: 1971-11-30
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Expires: 1987-12-04
Abstract
Abstract A nonwoven fabric comprising a plurality of layers of generally parallel fiber-containing strands, the strands of one of said layers being disposed at varying inclinations with respect to the strands of an adjacent layer along the length of the fabric, and the fibers of said strands being entangled with fibers of adjacent strands both in the same layer and in a different layer.
Inventors
- 👤 William T Allman Jr
- 👤 James H Winger
- 👤 William A Burn Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:50
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/10; D04H3/11; D04H3/105; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24083; Y10T442/00; Y10T442/60; Y10T442/643
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
30 words
A nonwoven fabric as defined in claim 1 wherein said strands are zero twist yarns of continuous filaments, the individual fibers of said strands interlocking with fibers from other strands.
References Cited (Backward Citations)
US3129466A
Cited
US3055080A
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US3193436A
Cited
US3235935A
Cited
US3391048A
Cited
US3422510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |