US3011233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refractory sulfide casting cores
Assignee: General Electric Co
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Filing: 1959-09-04
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Granted: 1961-12-05
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Expires: 1979-09-04
Abstract
No abstract record available.
Inventors
- 👤 Kirtchik Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:45
CPC Classifications
B; B22; B22D; B22D29/00; B22D29/001; B22C; B22C1/00; B22C9/00; B22C9/10; B22C9/105
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
39 words
FOR USE IN CASTING ARTICLES INCLUDING AN OPENING PRODUCED BY THE REMOVAL OF A CORE, A CORE HAVING A REMOVABLE PORTION CONSISTING ESSENTIALLY OF A SULFIDE SELECTED FROM THE GROUP CONSISTING OF CERIUM SULFIDES, THORIUM SULFIDES AND THEIR MIXTURES.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |