US3703424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a wear-resistant area in a surface-covering material
Assignee: Dunlop Holdings Ltd
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Filing: 1969-07-23
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Granted: 1972-11-21
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Expires: 1989-07-23
Abstract
Abstract A WEAR-RESISTANT AREA IS PRODUCED IN A SURFACE-COVERING MATERIAL, E.G. A CAR CARPET, HAVING A PILE OF THERMOPLASTIC FLOCK FIBRES BY SUBJECTING THE PILE TO HEAT AND PRESSURE IN AN AREA CORRESPONDING TO THE DESIRED WEAR-RESISTANT AREA TO FUSE THE FIBRES IN THAT AREA AND COOLING TO SET THE FUSED MATERIAL.
Inventors
- 👤 Harry Charnock
- 👤 David E Bowker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
B; B60; B60N; B60N3/00; B60N3/04; B60N3/048; D; D06; D06M; D06M23/00; D06M23/16; D06M23/18; D06Q; D06Q1/00; D06Q1/06; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1043; Y10T156/1044; Y10T156/1048; Y10T428/00; Y10T428/23907; Y10T428/23929
Claims Analysis
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |