US2911310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Investment materials for casting moulds
Assignee: Shaw Process Dev Corp
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Filing: 1954-11-24
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Granted: 1959-11-03
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Expires: 1974-11-24
Abstract
No abstract record available.
Inventors
- 👤 Shaw Noel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:12
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE FORMULATION OF A BINDER FOR USE IN A REFRACTORY SLURRY WHICH COMPRISES ADDING ABOUT 1,907 PARTS OF ETHYL SILICATE HAVING A SILICA CONTENT OF APPROXIMATELY 40-43% TO A MIXTURE OF ABOUT 800 PARTS OF ALCOHOL, 300 PARTS OF WATER AND ABOUT 2 TO 3 PARTS OF CONCENTRATED HYDROCHLORIC ACID, AGITATING SAID MIXTURE WHILE THE TEMPERATURE THEREOF RISES UNTIL THE MXTURE BECOMES CLEAR, AND WHEN THE TEMPERATURE OF SAID CLEAR MIXTURE RETURNS TO ROOM TEMPERATURE, ADDING THERETO ABOUT 1,530 PARTS OF THE AFORESAID ETHYL SILICATE AND AGITATING UNTIL A CLEAR SOLUTION RESULTS.
Claim 2
Dependent Claim
92 words
THE FORMULATION OF A BINDER FOR USE IN A REFRACTORY SLURRY WHICH COMPRISES ADDING ABOUT 1,907 PARTS OF ETHYL SILICATE HAVING A SILICA CONTENT OF APPROXIMATELY 40-43% TO A MIXTURE OF ABOUT 800 PARTS OF ALCOHOL, 300 PARTS OF WATER AND ABOUT 2 TO 3 PARTS OF CONCENTRATED HYDROCHLORIC ACID, AGITATING SAID MIXTURE WHILE THE TEMPERATURE THEREOF RISES UNTIL THE MXTURE BECOMES CLEAR, AND WHEN THE TEMPERATURE OF SAID CLEAR MIXTURE RETURNS TO ROOM TEMPERATURE, ADDING THERETO ABOUT 1,530 PARTS OF THE AFORESAID ETHYL SILICATE AND AGITATING UNTIL A CLEAR SOLUTION RESULTS.
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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |