US3575784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bonded nonwoven sheet
Assignee: EIDP Inc
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Filing: 1969-02-28
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Granted: 1971-04-20
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Expires: 1989-02-28
Abstract
Abstract THE INVENTION RELATES TO A BONDED NONWOVEN SHEET OF RANDOMLY DISTRIBUTED CONTINUOUS POLYESTER FILAMENTS, SAID SHEET HAVING A NET IRREVERSIBLE THERMAL SHRINKAGE IN THE LENGTHWISE AND WIDTHWISE DIRECTIONS OF BETWEEN ABOUT 1.2 AND 5% WHEN HEATED TO ABOUT 170*C. AND COOLED. THE SHEET IS USED AS A REINFORCING LAYER IN A FOAMED RUBBER CARPET UNDERLAY.
Inventors
- 👤 Brian R Phillips
- 👤 Richard D Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:43
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T442/00; Y10T442/60; Y10T442/681; Y10T442/696
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |