Patent US3676245A successfully refreshed from Google Patents.
US3676245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of nonwoven webs of continuous filaments
Assignee: Akzona Inc
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Filing: 1969-12-01
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Granted: 1972-07-11
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Expires: 1989-12-01
Abstract
Abstract A PROCESS FOR PRODUCING A NONWOVEN WEB OR FABRIC OF SUBSTANTIALLY CONTINUOUS SYNTHETIC POLYMER FILAMENTS IN WHICH THE INITIALLY FORMED WEB OF RANDOMLY DEPOSITED FILAMENTS CARRIED ON AN ENDLESS BAND OR SCREEN IS SPRAYED WITH VERY SMALL DROPLETS OF WATER IN LIMITED AMOUNTS SUFFICIENT TO ENHANCE THE COHERENT STRENGTH OF THE WEB, AFTER WHICH THE WEB IS REMOVED FROM THE BAND OR SCREEN AND ONLY THEN TREATED WITH A BINDER TO PROVIDE AN ADHESIVE BONDING OF THE FILAMENTS.
Inventors
- 👤 Werner Helmut
- 👤 Dieter Frank
- 👤 Werner Drachenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:38
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/12; D04H3/005; D04H3/009; D04H3/011
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |