Patent US4202424A successfully refreshed from Google Patents.
US3577312A
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US
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Felted fibrous web or batt
Assignee: Leucadia Inc
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Filing: 1968-02-21
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Granted: 1971-05-04
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Expires: 1988-02-21
Abstract
Abstract A FELTED FIBROUS WEB OR BATT HAVING ENCHANCED RESILIENCY IS PRODUCED WITH FROM 10% TO 100% SHORT FIBERS OF CHEMICALLY PULPED WOOD. A RESIN BINDER IS USED WHICH INCLUDES A CELLULOSE REACTIVE CROSSLINKING REAGENT.
Inventors
- 👤 Otis R Videen
- 👤 Donald E Wiegand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:24
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/26; D21H5/2607; D21H5/2628; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/64; D21H11/00; D21H11/02; D21H23/00; D21H23/02; D21H23/04; D21H23/06; D21H23/08; D21H23/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |