Patent US3623927A successfully refreshed from Google Patents.
US3623927A
Expired / Lapsed
US
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Method of making cross-lapped spread webs
Assignee: Celanese Corp
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Filing: 1969-07-25
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Granted: 1971-11-30
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Expires: 1989-07-25
Abstract
Abstract MAKING NON-WOVEN FABRICS WHICH LOOK LIKE WOVEN CLOTH BY STRIATING A WEB OF CRIMPED PARALLEL FILAMENTS, SETTING THE STRIATED WEB, AND CROSS-LAPPING THE STRIATED WEB.
Inventors
- 👤 George A Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:52
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; D; D02; D02J; D02J1/00; D02J1/18; B32B37/00; B32B37/14; B32B37/16; B32B37/20; B32B5/02; B32B5/022; D04; D04H; D04H3/00; D04H3/02; D04H3/04; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1015
Claims Analysis
Total Claims: 0
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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) | 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 |