US2684344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core binding composition
Assignee: Wyeth Holdings LLC
•
Filing: 1950-08-31
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Granted: 1954-07-20
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Expires: 1970-08-31
Abstract
No abstract record available.
Inventors
- 👤 Dorothea S Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:24
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A FOUNDRY SAND CORE COMPOSITION WHICH CONSISTS ESSENTIALLY OF A PREDOMINANT AMOUNT OF SAND AND A MIXTURE OF (1) 0.5-5% BY WEIGHT OF A DICYANDIAMIDE-FORMALDEHYDE RESIN, (2) 0.15-2% BY WEIGHT OF A CEREAL BINDER AND (3) SUFFICIENT WATER TO GELATINIZE THE CEREAL BINDER, SAID COMPOSITION BEING CAPABLE OF PROCESSING WITHOUT ADHERING TO THE MIXING AND MOLDING EQUIPMENT.
Claim 2
Dependent Claim
57 words
A FOUNDRY SAND CORE COMPOSITION WHICH CONSISTS ESSENTIALLY OF A PREDOMINANT AMOUNT OF SAND AND A MIXTURE OF (1) 0.5-5% BY WEIGHT OF A DICYANDIAMIDE-FORMALDEHYDE RESIN, (2) 0.15-2% BY WEIGHT OF A CEREAL BINDER AND (3) SUFFICIENT WATER TO GELATINIZE THE CEREAL BINDER, SAID COMPOSITION BEING CAPABLE OF PROCESSING WITHOUT ADHERING TO THE MIXING AND MOLDING EQUIPMENT.
References Cited (Backward Citations)
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Cited
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US2433168A
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US2422118A
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US2358002A
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US2427512A
Cited
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Cited
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Cited
US2501297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |