US3439076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing concrete tiles having a top layer of epoxy resin
Assignee: Shell USA Inc
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Filing: 1966-11-09
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Granted: 1969-04-15
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Expires: 1986-11-09
Abstract
No abstract record available.
Inventors
- 👤 Hendrikus J Loois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:35
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; B; B28; B28B; B28B19/00; B32; B32B; B32B27/00; C04B28/00; C04B28/02; C04B40/00; C04B40/02; C04B41/45; C04B41/46; C04B41/48; C04B41/4853; C04B41/60; C04B41/61; C04B41/62; C04B41/63
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
IN A PROCESS FOR THE MANUFACTURE OF ARTICLES HAVING A PLASTIC TOP LAYER AND A CONCRETE BASE LAYER WITH SIMULTANEOUS CURING OF THE TWO LAYERS, IN WHICH PROCESS A LIQUID LAYER CONTAINING AN EPOXY RESIN AND A CURING AGENT IS FIRST APPLIED IN A MOLD AND CONCRETE IS POURED ONTO SAID LAYER AND IS COMPACTED BEFORE THE RESIN IS CURED, THE IMPROVEMENT WITH COMPRISES COOLING BY AT LEST 30*C. THE LAYER APPLIED IN THE MOLD AND CONTAINING EPOXY RESIN AND CURING AGENT, FRESH CONCRETE BEING THEM POURED ON IT AND BOTH LAYERS BEING SUBSTANTIALLY CURED SIMULATENEOUSLY.
Claim 2
Dependent Claim
96 words
IN A PROCESS FOR THE MANUFACTURE OF ARTICLES HAVING A PLASTIC TOP LAYER AND A CONCRETE BASE LAYER WITH SIMULTANEOUS CURING OF THE TWO LAYERS, IN WHICH PROCESS A LIQUID LAYER CONTAINING AN EPOXY RESIN AND A CURING AGENT IS FIRST APPLIED IN A MOLD AND CONCRETE IS POURED ONTO SAID LAYER AND IS COMPACTED BEFORE THE RESIN IS CURED, THE IMPROVEMENT WITH COMPRISES COOLING BY AT LEST 30*C. THE LAYER APPLIED IN THE MOLD AND CONTAINING EPOXY RESIN AND CURING AGENT, FRESH CONCRETE BEING THEM POURED ON IT AND BOTH LAYERS BEING SUBSTANTIALLY CURED SIMULATENEOUSLY.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |