US2952553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for forming a metal casting mold
Assignee: Diamond Shamrock Corp
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Filing: 1959-01-12
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Granted: 1960-09-13
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 Frank P Ilenda
- 👤 Jr Cletus E Peeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:22
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF FORMING A CASTING MOLD WHICH COMPRISES PLACING IN CONTACT WITH A CASTING-DEFINING SURFACE A COMPOSITION COMPRISING AN INTIMATE MIXTURE OF A MAJOR PORTION OF ABOUT 90 TO 97% BY WEIGHT OF A FINELYDIVIDED REFRACTORY MATERIAL AND A MINOR PROPORTION OF ABOUT 3 TO 10% BY WEIGHT OF A LIQUID BINDER COMPOSITION COMPRISING IN COMBINATION ABOUT 80 TO 99% BY WEIGHT OF AN AQUEOUS ALKALI METAL SILICATE HAVING A SOLIDS CONTENT OF ABOUT 30 TO 50% AND ABOUT 1 TO 20% BY WEIGHT OF A FINELY-DIVIDED WATER SOLUBLE, SOLID ALKALI METAL SILICATE HAVING AN ALKALI METAL OXIDE:SILICA RATIO WITHIN THE RANGE OF 2.0:1.0 TO 1.0:3.3, INCLUSIVE, AND SUBJECTING THE MIXTURE TO CONTACT WITH A GASEOUS MATERIAL CAPABLE OF RIGIDIFYING THE MOLD-FORMING MIXTURE.
Claim 2
Independent Claim
124 words
THE METHOD OF FORMING A CASTING MOLD WHICH COMPRISES PLACING IN CONTACT WITH A CASTING-DEFINING SURFACE A COMPOSITION COMPRISING AN INTIMATE MIXTURE OF A MAJOR PORTION OF ABOUT 90 TO 97% BY WEIGHT OF A FINELYDIVIDED REFRACTORY MATERIAL AND A MINOR PROPORTION OF ABOUT 3 TO 10% BY WEIGHT OF A LIQUID BINDER COMPOSITION COMPRISING IN COMBINATION ABOUT 80 TO 99% BY WEIGHT OF AN AQUEOUS ALKALI METAL SILICATE HAVING A SOLIDS CONTENT OF ABOUT 30 TO 50% AND ABOUT 1 TO 20% BY WEIGHT OF A FINELY-DIVIDED WATER SOLUBLE, SOLID ALKALI METAL SILICATE HAVING AN ALKALI METAL OXIDE:SILICA RATIO WITHIN THE RANGE OF 2.0:1.0 TO 1.0:3.3, INCLUSIVE, AND SUBJECTING THE MIXTURE TO CONTACT WITH A GASEOUS MATERIAL CAPABLE OF RIGIDIFYING THE MOLD-FORMING MIXTURE.
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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |