Patent US4520446A successfully refreshed from Google Patents.
US3573142A
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Molded thermoplastic artificial sod having a fabric backing
Assignee: Monsanto Co
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Filing: 1968-09-17
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Granted: 1971-03-30
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Expires: 1988-09-17
Abstract
Abstract MOLDED, THERMOPLASTIC, THREE-DIMENSIONAL SYNTHETIC SOD PROJECTIONS EXTENDING FROM THE MATRIX TO SIMULATE BLADES OF GRASS AND A BONDED BACKING ON THE UNDER SIDE OF THE MATRIX. THE BACKING IS COMPOSED OF A SYNTHETIC FIBROUS, POROUS FABRIC WHICH SERVES TO PREVENT WEED GROWTH AND EROSION AND YET IS POROUS WHICH ALLOWS SEEPAGE OF WATER THROUGH THE SOD. THE FABRIC ALSO ALLOWS BONDING OF THE MATERIAL TO SUBSTRATES, SUCH AS ASPHALT. IN AN ADDITIONAL FEATURE, A FOAM MATERIAL, SUCH AS POLYURETHANE FOAM MAY BE BONDED TO THE BOTTOM OF THE FABRIC WHEN IT IS DESIRABLE THAT THE PRODUCT BE OF THE NON-SLIP TYPE SUCH AS DOORMATS, ETC.
Inventors
- 👤 Ronald W Chidgey
- 👤 Jack Doleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:51
CPC Classifications
E; E01; E01C; E01C13/00; E01C13/08; D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0068; D06N7/0071; D06N7/0076; D06N7/0086; D06N2201/00; D06N2201/02; D06N2201/0254; D06N2201/0263; D06N2201/08; D06N2201/085; D06N2203/00; D06N2203/04; D06N2203/042; D06N2203/045; D06N2203/048; D06N2203/06; D06N2203/061; D06N2203/068; D06N2205/00; D06N2205/04; D06N2209/00; D06N2209/10; D06N2209/106; D06N2209/16; D06N2209/1692; D06N2213/00; D06N2213/06; D06N2213/063; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23957; Y10T428/31504; Y10T428/31725; Y10T428/31728; Y10T428/31732
Claims Analysis
Total Claims: 0
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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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |