US3560253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire resistant coated masonry structural units
Assignee: SCM Corp
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Filing: 1968-06-19
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Granted: 1971-02-02
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Expires: 1988-06-19
Abstract
Abstract COATED MASONRY STRUCTURAL UNITS EXHIBITING UNSUAL FIRE AND FLAME RESISTANCE, AND THERMAL STABILITY ARE PROVIDED. THESE UNITS COMPRISE A MASONRY SUBSTRATE SUCH AS CONCRETE OR CINDER BLOCK COATED WITH A POLYESTER COMPOITION CONTAINING HYDRATED ALUMINA AS THE PRIMARY THERMAL STABILIZER AND FIRE RETARDANT. SECONDARY FIRE RETARDANTS SUCH AS ANTIMONY CAN ALSO BE EMPLOYED. THE COATING IS FORMED BY CURING A THERMOSETING POLYESTER COMPOSITION CONTAINING ALUMINA HYDRATE, UNSATURATED POLYESTER, AND MONOMERIC COMPOUND COPOLYMERIZABLE THEREWITH.
Inventors
- 👤 Robert J Ashton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/48; C04B41/4826; C04B41/60; C04B41/61; C04B41/62; C04B41/63; E; E04; E04C; E04C1/00; E04C1/40; C04B2111/00; C04B2111/20; C04B2111/28; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/26; Y10T428/269
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |