US3788879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road marking
Assignee: Koor Chemicals Ltd
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Filing: 1971-07-19
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Granted: 1974-01-29
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Expires: 1991-07-19
Abstract
Abstract A MARKER SHEET FOR MAKING ROAD SURFACE MARKINGS CONSISTS OF A MAT OF MINERAL FIBERS SUCH AS GLASS FIBERS, SLAG WOOL OR ASBESTOS, IMPREGNATED ON ITS UPPER SIDE WITH A PIGMENTAL THERMOPLASTIC RESIN AND ON ITS UNDERSIDE WITH AN ADHESIVE BITUMINOUS CEMENT CAPABLE OF STICKING TO THE ROAD SURFACE, AND THE EDGES OF THE MAT ARE LEFT FREE OF THE IMPREGNATING COMPOSITIONS AT LEAST AT TWO OPPOSITE SIDES. THESE FREE EDGES FORM TONGUES WHICH ARE GLUED TO THE ROAD SURFACE WHEN THE SHEETS ARE LAID THEREON, AND INTO WHICH THE ADHESIVE BITUMINOUS CEMENT OVERFLOWS UNDER PRESSURE. THE ADHESIVE CEMENT MAY BE DIVIDED INTO A CENTRAL ZONE AN MARGINAL ("SEALING") ZONES.
Inventors
- 👤 S Waysman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:28
CPC Classifications
C; C08; C08L; C08L95/00; C08L67/00; E; E01; E01F; E01F9/00; E01F9/50; E01F9/506; E01F9/512; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24736; Y10T428/24777; Y10T428/24802; Y10T428/24926; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/28; Y10T428/2848; Y10T428/2852; Y10T428/2857; Y10T428/287; Y10T428/2878; Y10T428/31504; Y10T428/31652; Y10T428/31815; Y10T428/8305
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |