Patent US3759742A successfully refreshed from Google Patents.
US3759742A
Expired / Lapsed
US
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Textile floor covering
Assignee: Bayer AG
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Filing: 1970-10-09
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Granted: 1973-09-18
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Expires: 1990-10-09
Abstract
Abstract TEXTILE FLOOR COVER COATED WITH AN UNFOAMED POLYURETHANE ELASTOMER BASED ON A POLYHYDROXYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYESTES OF ETHYLENE GLYCOL, PROPYLENE GLYCOL, BUTYLENE GLYCOL AND MIXTURES THEREOF, SAID GLYCOLS HAVING TWO OR MORE TERMINAL HYDROXY GROUPS AND AN AVERAGE MOLECULAR WEIGH OF 300-5000 AND A POLYISOCYANATE WITH AN OH/NCO RATIO OF FROM 1:0.3 TO 1:1.3.
Inventors
- 👤 M Salamon
- 👤 H Hagebaum
- 👤 W Bau
- 👤 G Reinecke
- 👤 M Wandel
- 👤 C Muhlhausen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:16
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; D06N2203/00; D06N2203/06; D06N2203/068; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/24; Y10T428/24033; Y10T442/00; Y10T442/20; Y10T442/2738
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |