US2556335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core binding material from drying oils
Assignee: Oel und Chemie Werk AG
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Filing: 1948-02-11
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Granted: 1951-06-12
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Expires: 1968-02-11
Abstract
No abstract record available.
Inventors
- 👤 Moser Franz Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:41
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/24
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
A PROCESS FOR PRODUCING SAND CORES FOR FOUNDRY WORK WHICH COMPRISES MIXING FOUNDRY SAND WITH A DRYING OIL AND A COMPOUND CONTAINING A PEROXIDE GROUP IN AN AMOUNT OF ABOUT 1% TO 20% BY WEIGHT OF SAID DRYING OIL, FORMING TO CORE AND CAUSING THE SAME TO HARDEN AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
51 words
A PROCESS FOR PRODUCING SAND CORES FOR FOUNDRY WORK WHICH COMPRISES MIXING FOUNDRY SAND WITH A DRYING OIL AND A COMPOUND CONTAINING A PEROXIDE GROUP IN AN AMOUNT OF ABOUT 1% TO 20% BY WEIGHT OF SAID DRYING OIL, FORMING TO CORE AND CAUSING THE SAME TO HARDEN AT ROOM TEMPERATURE.
Claim 3
Dependent Claim
49 words
A NEW COMPOSITION OF MATTER, A CORE SAND CONTAINING MIXED THEREWITH A BINDING AGENT COMPRISING A DRYING OIL AND A PEROXIDE COMPOUND PRESENT IN A QUANTITY OF FROM ABOUT 1% TO 20% BY WEIGHT OF SAID DRYING OIL, WHICH CAUSES CORES MADE THEREFROM TO SET UP AT ROOM TEMPERATURE.
Claim 4
Dependent Claim
49 words
A NEW COMPOSITION OF MATTER, A CORE SAND CONTAINING MIXED THEREWITH A BINDING AGENT COMPRISING A DRYING OIL AND A PEROXIDE COMPOUND PRESENT IN A QUANTITY OF FROM ABOUT 1% TO 20% BY WEIGHT OF SAID DRYING OIL, WHICH CAUSES CORES MADE THEREFROM TO SET UP AT ROOM TEMPERATURE.
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) | 1954-06-11 | 1954-12-11 | 1955-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-11 | 1958-12-11 | 1959-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-11 | 1962-12-11 | 1963-06-12 | $7700.00 | Window Closed / Lapsed |