US3795571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated non-woven sheet
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1972-09-21
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Granted: 1974-03-05
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Expires: 1992-09-21
Abstract
Abstract A LAMINATED NON-WOVEN SHEET IS MADE FROM NON-WOVEN MATS OF MELT-BROWN THERMOPLASTIC POLYMER FIBERS. THE NON-WOVEN SHEETS MAY BE PRODUCED BY EITHER POINT WELDING OR USING ADHESIVES TO LAMINATE AT LEAST ONE NON-WOVEN MAT HAVING A HIGH STRIP TENSILE STRENGTH TO AT LEAST ON NON-WOVEN MAT HAVING A HIGH TEAR RESISTANCE SO THAT THE SHEETS HAVE BOTH HIGH STRIP TENSILE STRENGTH AND HIGH TEAR RESISTANCE. D R A W I N G
Inventors
- 👤 J Prentice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:26
CPC Classifications
D; D04; D04H; D04H3/00; D04H3/08; D04H3/16; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/02; B32B5/022; B32B7/00; B32B7/04; B32B7/12; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2307/00; B32B2307/50; B32B2307/54; B32B2307/582; B32B2307/5825; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/24934; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T442/00; Y10T442/60; Y10T442/608; Y10T442/614; Y10T442/619; Y10T442/621; Y10T442/625; Y10T442/68
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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |