US3333035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing a cement precast floor tile
Assignee: Dow Chemical Co
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Filing: 1966-05-31
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Granted: 1967-07-25
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Expires: 1986-05-31
Abstract
No abstract record available.
Inventors
- 👤 Julian C Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:02
CPC Classifications
B; B28; B28B; B28B11/00; B28B11/12; C; C04; C04B; C04B28/00; C04B28/30; C04B28/32; C04B40/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD FOR PREPARING CEMENT PRECAST FLOOR TILE WHICH COMPRISES: (A) PLACING A MEMBER SELECTED FROM THE GROUP CONSISTING OF PORTLAND AND MAGNESIUM OXYCHLORIDE CEMENT MIXTURES INTO A TILE MOLD; (B) CURING SAID MIXTURES IN SAID MOLD SO THAT THEY HARDEN INTO A TILE FORM HAVING A THICKNESS OF FROM ABOUT 5/32 TO ABOUT 3/8 INCH; (C) RAISING THE TOP SURFACE OF SAID TILE A PREDETERMINED DISTANCE ABOVE THE WALLS OF SAID MOLD; (D) GRINDING THE TOP SURFACE OF THE CURED TILE WHILE IN SAID MOLD THEREBY SMOOTHING SAID SURFACE OF SAID TILE; AND (E) REMOVING THE SO-TREATED TILE FROM SAID MOLD THEREBY PRODUCING A FINISHED CEMENT PRECAST TILE HAVING EXCELLENT WARPAGE RESISTANT PROPERTIES.
Claim 2
Independent Claim
114 words
A METHOD FOR PREPARING CEMENT PRECAST FLOOR TILE WHICH COMPRISES: (A) PLACING A MEMBER SELECTED FROM THE GROUP CONSISTING OF PORTLAND AND MAGNESIUM OXYCHLORIDE CEMENT MIXTURES INTO A TILE MOLD; (B) CURING SAID MIXTURES IN SAID MOLD SO THAT THEY HARDEN INTO A TILE FORM HAVING A THICKNESS OF FROM ABOUT 5/32 TO ABOUT 3/8 INCH; (C) RAISING THE TOP SURFACE OF SAID TILE A PREDETERMINED DISTANCE ABOVE THE WALLS OF SAID MOLD; (D) GRINDING THE TOP SURFACE OF THE CURED TILE WHILE IN SAID MOLD THEREBY SMOOTHING SAID SURFACE OF SAID TILE; AND (E) REMOVING THE SO-TREATED TILE FROM SAID MOLD THEREBY PRODUCING A FINISHED CEMENT PRECAST TILE HAVING EXCELLENT WARPAGE RESISTANT PROPERTIES.
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |