Patent US2884333A successfully refreshed from Google Patents.
US2884333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Binder for foundry sand molds and process of forming
Assignee: Individual
•
Filing: 1957-09-18
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Granted: 1959-04-28
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Expires: 1977-09-18
Abstract
No abstract record available.
Inventors
- 👤 Michael B Karr
- 👤 William V Karr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:06
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A COMPOSITION OF MATTER FOR FORMING SAND MOLDS AND CORES COMPRISINGS AN UNRECTED INTIMATE MIXTURE OF (1) A FOUNDRY SAND MIXTURE AND (2) A MIXTURE CONSISTING ESSENTIALLY OF GROUND POWDER OF CORNCOB BEESWING, GROUND POWDER OF CORNCOB OUTER GLUME AND GROUND POWDER OF CORNCOB PITH.
Claim 2
Dependent Claim
45 words
A COMPOSITION OF MATTER FOR FORMING SAND MOLDS AND CORES COMPRISINGS AN UNRECTED INTIMATE MIXTURE OF (1) A FOUNDRY SAND MIXTURE AND (2) A MIXTURE CONSISTING ESSENTIALLY OF GROUND POWDER OF CORNCOB BEESWING, GROUND POWDER OF CORNCOB OUTER GLUME AND GROUND POWDER OF CORNCOB PITH.
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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |