US3793414A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing leather substitute from polyurethane foam sheet
Assignee: Tenneco Polymers Inc
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Filing: 1971-12-09
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Granted: 1974-02-19
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Expires: 1991-12-09
Abstract
Abstract LEATHER SUBSTITUTE COMPOSITION COMPRISIG A FIBROUS MAT ADJACENT A POLYURETHANE FOAM SHEET WITH A NUMBER OF THE FIBERS OF THE MAT PENETRATING THE FOAM SHEET AND A THIN, FLEXIBLE POLYMER COATING ON THE FOAM SIDE OF THE COMPOSITION.
Inventors
- 👤 F Buff
- 👤 J Gross
- 👤 L Healy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/56; B29C44/569; B32; B32B; B32B5/00; B32B5/02; B32B5/08; B32B5/18; D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; B32B2255/00; B32B2255/10; B32B2255/102; B32B2255/26; B32B2262/00; B32B2262/02; B32B2262/06; B32B2262/08; B32B2262/14; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0264; B32B2266/0278; B32B2266/06; B32B2307/00; B32B2307/50; B32B2307/546; B32B2307/554; B32B2307/70; B32B2307/72; B32B2437/00; B32B2437/02; B32B2451/00; B32B2601/00; B32B5/06; B32B5/22; B32B5/24; B32B5/245; D06N2205/00; D06N2205/04; Y; Y10; Y10S; Y10S264/00; Y10S264/77; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/31855
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |