US3684601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a soft outer surface of fine denier fiber on a nonwoven fabric
Assignee: Phillips Petroleum Co
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Filing: 1969-12-29
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Granted: 1972-08-15
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Expires: 1989-12-29
Abstract
Abstract A NONWOVEN FABRIC HAVING A SOFT TEXTURED OUTER SURFACE IS PRODUCED BY NEEDLING A LAYER OF HEAT-SEALABLE FIBRES TO A POLYMER FILM SAID FILM HAVING A MELTING POINT LESS THAN THE MELTING POINT OF SAID FIBERS, AND HEATING THE COMPOSITE TO IMPART STRENGTH THERETO BY FUSING THE INDIVIDUAL FIBERS AT BOTH OUTER SURFACES OF THE COMPOSITE AND MELTING SAID POLYMER FILM TO INTERLOCK THE FIBERS.
Inventors
- 👤 Richard E Hayward Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:29
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B32B23/00; B32B23/10; B32B23/20; B32B27/30; B32B27/304; B32B27/308; B32B27/32; B32B27/34; B32B27/36; B32B37/00; B32B37/10; B32B5/00; B32B5/02; B32B5/022; B32B5/06; B32B5/22; B32B5/24; B32B5/26; B32B7/00; B32B7/02; B32B7/027; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D04H1/485; D04H1/498; B32B2262/00; B32B2262/02; B32B2262/0223; B32B2262/0238; B32B2262/0246; B32B2262/0253; B32B2262/0261; B32B2262/0276; B32B2262/06; B32B2262/08; B32B2307/00; B32B2307/30; B32B2307/31; B32B2307/50; B32B2307/546; B32B2307/70; B32B2307/714; B32B2307/7145; B32B2307/726; B32B2307/7265; B32B2307/732; B32B2307/734; B32B2437/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994
Claims Analysis
Total Claims: 0
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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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |