US3011986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dip coat composition for metal casting comprising ceramic flour, colloidal silica, gum, alkali metal fluoride and rubber latex
Assignee: Howmet Turbine Components Corp
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Filing: 1958-09-12
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Granted: 1961-12-05
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Expires: 1978-09-12
Abstract
No abstract record available.
Inventors
- 👤 Operhall Theodore
- 👤 Charles W Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:15
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A DIP COAT COMPOSITION FOR USE IN MOLDING A SHELL ABOUT A HEAT DISPOSABLE PATTERN IN METAL CASTING PROCESSES COMPRISING AN AQUEOUS COMPOSITION, THE SOLIDS OF WHICH COMPRISE A CERAMIC FLOUR SELECTED FROM THE GROUP CONSISTING OF ALUMINA, TITANIUM DIOXIDE, ZIRCON, FUSED QUARTZ, THORIUM DIOXIDE, CHROMITE, SILLIMANITE, MULLITE, MAGNESIA AND PURE SILICA, COLLOIDAL SILICA PRESENT IN AN AMOUNT RANGING FROM 2-15 PERCENT BY WEIGHT OF THE FLOUR, AN ALKALI METAL FLUORIDE PRESENT IN AN AMOUNT RANGING FROM .1-.5 PERCENT BY WEIGHT OF THE FLOUR, A WATER SOLUBLE GUM PRESENT IN AN AMOUNT WITHIN THE RANGE OF .005-.05 PERCENT BY WEIGHT OF THE FLOUR, A SYNTHETIC RUBBER LATEX PRESENT IN AN AMOUNT WITHIN THE RANGE OF 0.1-1.0 PERCENT BY WEIGHT OF THE FLOUR, AN ANIONIC WETTING AGENT PRESENT IN AN AMOUNT RANGING FROM .01-1.0 PERCENT BY WEIGHT OF THE FLOUR, AND AN ALIPHATIC ALCOHOL HAVING A CARBON LENGTH WITHIN THE RANGE OF 5 TO 16 PRESENT IN AN AMOUNT WITHIN THE RANGE OF .01-1.0 PERCENT BY WEIGHT OF THE FLOUR.
Claim 2
Dependent Claim
169 words
A DIP COAT COMPOSITION FOR USE IN MOLDING A SHELL ABOUT A HEAT DISPOSABLE PATTERN IN METAL CASTING PROCESSES COMPRISING AN AQUEOUS COMPOSITION, THE SOLIDS OF WHICH COMPRISE A CERAMIC FLOUR SELECTED FROM THE GROUP CONSISTING OF ALUMINA, TITANIUM DIOXIDE, ZIRCON, FUSED QUARTZ, THORIUM DIOXIDE, CHROMITE, SILLIMANITE, MULLITE, MAGNESIA AND PURE SILICA, COLLOIDAL SILICA PRESENT IN AN AMOUNT RANGING FROM 2-15 PERCENT BY WEIGHT OF THE FLOUR, AN ALKALI METAL FLUORIDE PRESENT IN AN AMOUNT RANGING FROM .1-.5 PERCENT BY WEIGHT OF THE FLOUR, A WATER SOLUBLE GUM PRESENT IN AN AMOUNT WITHIN THE RANGE OF .005-.05 PERCENT BY WEIGHT OF THE FLOUR, A SYNTHETIC RUBBER LATEX PRESENT IN AN AMOUNT WITHIN THE RANGE OF 0.1-1.0 PERCENT BY WEIGHT OF THE FLOUR, AN ANIONIC WETTING AGENT PRESENT IN AN AMOUNT RANGING FROM .01-1.0 PERCENT BY WEIGHT OF THE FLOUR, AND AN ALIPHATIC ALCOHOL HAVING A CARBON LENGTH WITHIN THE RANGE OF 5 TO 16 PRESENT IN AN AMOUNT WITHIN THE RANGE OF .01-1.0 PERCENT BY WEIGHT OF THE FLOUR.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |