US3817820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needled textile fabric
Assignee: CHATHAM MANUFACTURING COMPANY A CORP OF NORTH CAROLINA
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Filing: 1972-01-28
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Granted: 1974-06-18
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Expires: 1992-01-28
Abstract
Abstract THERE IS PROVIDED A NEEDLED TEXTILE FABRIC HAVING HIGH BULK DENSITY, ENTANGLED FIBERS, A CONTROLLED AXIS OF FLEXURE AND A BULK DENSITY GRADIENT INCREASING FROM THE BACK SURFACE TO THE FACE SURFACE THEREOF. THE PRODUCTS ARE MADE BY NEEDLING LAYERS OF FIBERS HAVING A NEEDLE PICKUP GRADIENT GRADIENT INTO A DENSE STRUCTURE, WITH A BULK DENSITY GRADIENT. THE NEEDLED FABRIC IS FINISHED WITH CONVENTIONAL LEATHER AND/OR TEXTILE FINISHES. THE FABRIC IS SUITABLE FOR USE AS AN ARTIFICIAL LEATHER.
Inventors
- 👤 A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:02
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/02; B32B5/06; B32B27/00; B32B27/12; B32B27/40; B32B3/00; B32B3/26; B32B3/30; B32B5/18; B32B5/22; B32B5/24; B32B5/245; B32B5/26; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D04H1/70; D04H1/72; D04H18/00; D06; D06N; D06N3/00; D06N3/0002; B32B38/00; B32B2038/0052; B32B2038/008; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/70; B32B2307/732; B32B2307/734; B32B2307/736; B32B2375/00; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395; Y10T428/23986; Y10T428/24; Y10T428/24628; Y10T428/24636; Y10T428/249921; Y10T428/249953; Y10T428/249978; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2909; Y10T428/2913; Y10T428/298; Y10T442/00; Y10T442/60; Y10T442/682
Claims Analysis
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References Cited (Backward Citations)
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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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |