Patent US2847299A successfully refreshed from Google Patents.
US2847299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of metals
Assignee: National Research Corp
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Filing: 1955-04-28
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Granted: 1958-08-12
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Expires: 1975-04-28
Abstract
No abstract record available.
Inventors
- 👤 Wayne H Keller
- 👤 Irwin S Zonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:51
CPC Classifications
C; C22; C22B; C22B60/00; C22B60/02; C22B60/0291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS FOR MANUFACTURING THORIUM WHEREIN A THORIUM HALIDE IS DISSOLVED IN A BATH OF A FUSED SALT AND IS REDUCED TO THORIUM CRYSTALS BY SUPPLYING A METALLIC REDUCING AGENT TO THE BATH, THE REDUCING AGENT COMPRISING A METAL SELECTED FROM THE CLASS CONSISTING OF THE ALKALI METALS AND THE ALKALINE EARTH METALS AND THE FUSED SALT COMPRISING A HALIDE SELECTED FROM THE CLASS CONSISTING OF THE ALKALI METAL HALIDES AND THE ALKALINE EARTH METAL HALIDES, THE IMPROVEMENT OF WHICH COMPRISES MAINTAINING BETWEEN THE SUPPLY OF REDUCING AGENT AND A MAJOR PORTION OF THE SALT BATH CONTAINING THE DISSOLVED THORIUM HALIDE A ZONE COMPRISING FUSED SALT WHICH IS SUBSTANTIALLY FREE OF THORIUM HALIDE.
Claim 2
Dependent Claim
113 words
A PROCESS FOR MANUFACTURING THORIUM WHEREIN A THORIUM HALIDE IS DISSOLVED IN A BATH OF A FUSED SALT AND IS REDUCED TO THORIUM CRYSTALS BY SUPPLYING A METALLIC REDUCING AGENT TO THE BATH, THE REDUCING AGENT COMPRISING A METAL SELECTED FROM THE CLASS CONSISTING OF THE ALKALI METALS AND THE ALKALINE EARTH METALS AND THE FUSED SALT COMPRISING A HALIDE SELECTED FROM THE CLASS CONSISTING OF THE ALKALI METAL HALIDES AND THE ALKALINE EARTH METAL HALIDES, THE IMPROVEMENT OF WHICH COMPRISES MAINTAINING BETWEEN THE SUPPLY OF REDUCING AGENT AND A MAJOR PORTION OF THE SALT BATH CONTAINING THE DISSOLVED THORIUM HALIDE A ZONE COMPRISING FUSED SALT WHICH IS SUBSTANTIALLY FREE OF THORIUM HALIDE.
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) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |