Patent US1232290A successfully refreshed from Google Patents.
Patent US2502473A successfully refreshed from Google Patents.
US2502473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition for molds
Assignee: Dacar Chemical Products Co
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Filing: 1946-07-30
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Granted: 1950-04-04
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Expires: 1966-07-30
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Napier
- 👤 Lesso Harold Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:31
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
A NEW COMPOSITION OF MATTER FOR USE AS A MOLD WASH OR MOLD DRESSING IN CASTING FERROUS METAL SHAPES COMPOSED OF AN OIL AND WATER EMULSION COMPOSED ESSENTIALLY OF 50 TO 85 PARTS BY WEIGHT OF THE STILL RESIDUE OBTAINED FROM THE LIVE STEAM DISTILLATION OF THE SULPHURIC ACID TREATED LIGHT OIL FRACTION OF COKE GAS, THE STILL RESIDUE CONTAINING FROM 30% TO 85% BY WEIGHT OF MATERIAL NOT VOLATILE AT A TEMPERATURE OF ABOUT 212* TO 214*F., 5 TO 25 PARTS BY WEIGHT OF FINELY DIVIDED CARBON AND 1 1/2 TO 8 PARTS BY WEIGHT OF A GLYCOL.
Claim 2
Dependent Claim
99 words
A NEW COMPOSITION OF MATTER FOR USE AS A MOLD WASH OR MOLD DRESSING IN CASTING FERROUS METAL SHAPES COMPOSED OF AN OIL AND WATER EMULSION COMPOSED ESSENTIALLY OF 50 TO 85 PARTS BY WEIGHT OF THE STILL RESIDUE OBTAINED FROM THE LIVE STEAM DISTILLATION OF THE SULPHURIC ACID TREATED LIGHT OIL FRACTION OF COKE GAS, THE STILL RESIDUE CONTAINING FROM 30% TO 85% BY WEIGHT OF MATERIAL NOT VOLATILE AT A TEMPERATURE OF ABOUT 212* TO 214*F., 5 TO 25 PARTS BY WEIGHT OF FINELY DIVIDED CARBON AND 1 1/2 TO 8 PARTS BY WEIGHT OF A GLYCOL.
Claim 3
Dependent Claim
88 words
AN INGOT MOLD COATED WITH A COMPOSITION CONSISTING ESSENTIALLY OF AN EMULSION OF OIL AND WATER COMPOSED ESSENTIALLY OF 50 TO 85 PARTS BY WEIGHT OF THE PURE STILL RESIDUE FROM THE LIVE STEAM DISTILLATION OF THE TREATED LIGHT OIL FRACTION OF COKE OVEN GAX, THE STILL RESIDUE CONTAINING FROM 30% TO 85% BY WEIGHT OF MATERIAL NOT VOLATILE AT A TEMPERATURE OF ABOUT 212* TO 214*F., 5 TO 25 PARTS BY WEIGHT OF FINELY DIVIDED CARBON, AND 1 1/2 TO 8 PARTS BY WEIGHT OF A GLYCOL.
Claim 4
Dependent Claim
88 words
AN INGOT MOLD COATED WITH A COMPOSITION CONSISTING ESSENTIALLY OF AN EMULSION OF OIL AND WATER COMPOSED ESSENTIALLY OF 50 TO 85 PARTS BY WEIGHT OF THE PURE STILL RESIDUE FROM THE LIVE STEAM DISTILLATION OF THE TREATED LIGHT OIL FRACTION OF COKE OVEN GAX, THE STILL RESIDUE CONTAINING FROM 30% TO 85% BY WEIGHT OF MATERIAL NOT VOLATILE AT A TEMPERATURE OF ABOUT 212* TO 214*F., 5 TO 25 PARTS BY WEIGHT OF FINELY DIVIDED CARBON, AND 1 1/2 TO 8 PARTS BY WEIGHT OF A GLYCOL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-03 | 1953-10-03 | 1954-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-03 | 1957-10-03 | 1958-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-03 | 1961-10-03 | 1962-04-04 | $7700.00 | Window Closed / Lapsed |