US3837988A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite mat
Assignee: 3M Co
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Filing: 1973-01-24
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Granted: 1974-09-24
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Expires: 1993-01-24
Abstract
Abstract A RESILIENT OPEN WEB OF INTERNEGAGED COARSE CONTINUOUS COIL FILAMENTS, WITH ONE MAJOR SURFACE OF THE WEB BEING FLATTENED, IS INTEGRATED WITH A BONDING RESN TO PERMANENTLY BOND THE FILAMENTS TOGETHER TO FORM A TOUGH, EASILY-CLEANED MAT MATERIAL WHICH IS ESPECIALLY USEFUL AS CARPETING IN DAMP AREAS. THE WEB MAY ALSO BE LAMINATED TO VARIOUS SHEET-LIKE SUBSTRATES SUCH AS PLASTIC FILM, METAL OR PLASTIC SCREENS, SYNTHETIC FOAM LAYERS, AND THE LIKE, TO PROVIDE A DIMENSIONALLY STABLE MAT MATERIAL WHICH IS ESPECIALLY SUITED FOR USE AS A FLOOR COVERING.
Inventors
- 👤 D Hennen
- 👤 L Kusilek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:42
CPC Classifications
B; B32; B32B; B32B27/00; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B27/12; B32B5/26; D; D01; D01D; D01D5/00; D01D5/22; D04; D04H; D04H11/00; D04H11/08; D04H3/00; D04H3/08; D04H3/16; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0235; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/23979; Y10T428/23986; Y10T428/23993; Y10T442/00; Y10T442/10; Y10T442/184; Y10T442/195; Y10T442/60; Y10T442/608; Y10T442/627; Y10T442/635; Y10T442/647
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) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |