Patent US3704191A successfully refreshed from Google Patents.
US3704191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-woven process
Assignee: ANTHONY M SAICH
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Filing: 1969-12-01
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Granted: 1972-11-28
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Expires: 1989-12-01
Abstract
Abstract A PROCESS FOR MAKING NON-WOVEN NYLON CARPET BACKING FOR EITHER TUFTED OR NEEDLE-PUNCHED CARPETS, COMPRISING THE STEPS OF FORMING NYLON WEB AND BONDING THE SAME TOGETHER WITH AN OPEN FILAMENT YARN BASE, BY A COM- BINATION OF MECHANICAL ENTANGLEMENT, SELECTIVE HEAT TREATMENT, AND A BINDER, AS DESCRIBED HEREINAFTER.
Inventors
- 👤 Francis M Buresh
- 👤 Stanley M Nisenson
- 👤 Walter P Lipscomb
- 👤 Anthony M Saich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:05
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; D; D04; D04H; D04H5/00; D04H5/02; B32B5/02; B32B5/022; B32B5/06; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2262/0269; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |