Patent US2684344A successfully refreshed from Google Patents.
US2684344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core binding composition
Assignee: Wyeth Holdings LLC
•
Filing: 1950-08-31
•
Granted: 1954-07-20
•
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 08:27
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)
US2229291A
Cited
GB549705A
Cited
US2433168A
Cited
US2422118A
Cited
US2358002A
Cited
US2427512A
Cited
US2521614A
Cited
US2517824A
Cited
US2465094A
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 |