Patent US836845A successfully refreshed from Google Patents.
US3137751A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Casting of abrasive material
Assignee: Saint Gobain Abrasives Inc
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Filing: 1962-01-29
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Granted: 1964-06-16
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Expires: 1982-01-29
Abstract
No abstract record available.
Inventors
- 👤 Neil C Turnbull
- 👤 Steven J Roschuk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:39
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/32; C04B33/323
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR CASTING MOLTEN REFRACTORY MATERIAL COMPRISING THE STEPS OF: (1) POURING THE MOLTEN MATERIAL INTO A MOLD WHICH IS CHARACTERIZED BY (A) HAVING REMOVABLE SEGMENTS (B) WHICH MELT AT A TEMPERATURE LOWER THAN THE TEMPERATURE OF THE MOLTEN MATERIAL, AND (2) REMOVING THE SEGMENTS OF THE MOLD (A) AFTER SURROUNDING THE MOLD WITH A FLOWABLE REFRACTORY INSULATING MATERIAL (B) AFTER A SOLIDIFIED WALL HAS FORMED AROUND THE INGOT, AND (C) PRIOR TO FUSION OF THE REMOVABLE SIDES OF THE MOLD.
Claim 2
Dependent Claim
82 words
A PROCESS FOR CASTING MOLTEN REFRACTORY MATERIAL COMPRISING THE STEPS OF: (1) POURING THE MOLTEN MATERIAL INTO A MOLD WHICH IS CHARACTERIZED BY (A) HAVING REMOVABLE SEGMENTS (B) WHICH MELT AT A TEMPERATURE LOWER THAN THE TEMPERATURE OF THE MOLTEN MATERIAL, AND (2) REMOVING THE SEGMENTS OF THE MOLD (A) AFTER SURROUNDING THE MOLD WITH A FLOWABLE REFRACTORY INSULATING MATERIAL (B) AFTER A SOLIDIFIED WALL HAS FORMED AROUND THE INGOT, AND (C) PRIOR TO FUSION OF THE REMOVABLE SIDES OF THE MOLD.
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) | 1967-06-16 | 1967-12-16 | 1968-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-16 | 1971-12-16 | 1972-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-16 | 1975-12-16 | 1976-06-16 | $7700.00 | Window Closed / Lapsed |