US3705070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven fabric and process for preparing
Assignee: Hercules LLC
•
Filing: 1969-07-22
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Granted: 1972-12-05
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Expires: 1989-07-22
Abstract
Abstract NONWOVEN FABRICS ARE PREPARED BY CROSSLAYING AN OPEN NETWORK OF FIBRIL-INTERCONNECTED SUBSTANTIALLY PARALLEL CONTINUOUS MONOFILAMENTS WITH A SIMILAR NETWORK AT AN ANGLE OF 20-89* AND BONDING THE SAME.
Inventors
- 👤 Charles W Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:20
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/02; D04H3/04; D04H13/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057; Y10T156/1062; Y10T156/1067; Y10T156/1074; Y10T156/1084; Y10T156/1085; Y10T156/1087; Y10T428/00; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/24116; Y10T428/24273; Y10T428/24298; Y10T428/24314; Y10T428/24322; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T442/00; Y10T442/60; Y10T442/643
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |