US3094422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core elements
Assignee: Fonderie de Precision
•
Filing: 1960-12-19
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Granted: 1963-06-18
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Expires: 1980-12-19
Abstract
No abstract record available.
Inventors
- 👤 Reinhold Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:47
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/44; B29C33/52; Y; Y10; Y10S; Y10S264/00; Y10S264/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A CORE ELEMENT FOR THE CASTING OF HOLLOW PARTS CONSISTING OF AT LEAST ONE ALKALINE METASILICATE AND ONE ALKALINE DISILICATE AND CONSISTING SUBSTANTIALLY OF 2070% BY WEIGHT OF ANHYDROUS ALKALINE METASILICATE AND 80-30% BY WEIGHT OF ANYHYDROUS ALKALINE DISILICATE.
Claim 2
Dependent Claim
39 words
A CORE ELEMENT FOR THE CASTING OF HOLLOW PARTS CONSISTING OF AT LEAST ONE ALKALINE METASILICATE AND ONE ALKALINE DISILICATE AND CONSISTING SUBSTANTIALLY OF 2070% BY WEIGHT OF ANHYDROUS ALKALINE METASILICATE AND 80-30% BY WEIGHT OF ANYHYDROUS ALKALINE DISILICATE.
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |