Patent US2842445A successfully refreshed from Google Patents.
US2842445A
Expired / Lapsed
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Binding liquid for molds used in precision casting
Assignee: Rolls Royce PLC
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Filing: 1956-01-23
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Granted: 1958-07-08
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Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Emblem Harold Garton
- 👤 Cloherty Desmond Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:44
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A BONDING LIQUID FOR BONDING REFRACTORY MATERIALS USED FOR MOULDS AND CORES IN PRECISION CASTING WHICH IS PREPARED BY CARRYING OUT THE HYDROLYSIS OF ETHYL SILICATE WITH A STABLE SILICA SOL TO WHICH HAS BEEN ADDED AN ACID SELECTED FROM THE GROUP WHICH INCLUDES HYDROCHLORIC AND SULPHURIC ACIDS TO PRODUCE A NORMALITY OF THE ACIDIFIED SILICA SOL IN THE RANGE 0.25 TO 1.2.
Claim 2
Dependent Claim
63 words
A BONDING LIQUID FOR BONDING REFRACTORY MATERIALS USED FOR MOULDS AND CORES IN PRECISION CASTING WHICH IS PREPARED BY CARRYING OUT THE HYDROLYSIS OF ETHYL SILICATE WITH A STABLE SILICA SOL TO WHICH HAS BEEN ADDED AN ACID SELECTED FROM THE GROUP WHICH INCLUDES HYDROCHLORIC AND SULPHURIC ACIDS TO PRODUCE A NORMALITY OF THE ACIDIFIED SILICA SOL IN THE RANGE 0.25 TO 1.2.
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |