Patent US3188249A successfully refreshed from Google Patents.
US3188249A
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US
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Method of immersing cube-on-edge oriented silicon-iron in silicon-iron bath followed by annealing to form a cube-on-edge oriented silicon-iron product
Assignee: General Electric Co
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Filing: 1964-09-21
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Granted: 1965-06-08
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Expires: 1984-09-21
Abstract
No abstract record available.
Inventors
- 👤 Peter J Clemm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:29
CPC Classifications
C; C30; C30B; C30B19/00; C30B19/06; C30B19/062; C21; C21D; C21D8/00; C21D8/12; C23; C23C; C23C2/00; C23C2/04; C30B15/00; C30B29/00; C30B29/10; C30B29/52; C30B29/60; C30B29/605; C21D2201/00; C21D2201/05; C21D2281/00; C21D2281/01; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53796; Y10T29/53848; Y10T29/53857
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR PRODUCTION SHEETS CONSISTING ESSENTIALLY OF FROM ABOUT 1.5 TO 4.5 WEIGHT PERCENT SILICON, BALANCE SUBSTANTIALLY ALL IRON AND HAVING THEIR CONSTITUENT GRAINS ORIENTED IN THE (110) (001) CRYSTALLOGRAPHIC ORIENTATION, COMPRISING THE STEPS OF SUBJECTING A (110) (001) GRAIN ORIENTED MATRIX SHEET OF UP TO ABOUT 25 MILS THICKNESS TO A DRY HYDROGEN ATOMSPHERE HAVING A DEW POINT NO HIGHER THAN ABOUT -60*F. AT A TEMPERATURE OF FROM ABOUT 700 TO 1000*C. TO CLEAN THE SURFACE THEREOF, IMMERSING THE MATRIX SHEET IN A BATH OF MOLTEN SILICON-IRON ALLOY OF SUBSTANTIALLY THE SAME COMPOSITION AS THE MATRIX TO FREEZE ADDITIONAL METAL THEREON, AIR COOLING THE MATRIX SHEET AND FROZEN METAL AND ANNEALING THE COOLED PRODUCT IN A NON-OXIDIZING ATMOSPHERE AT TEMPERATURES OF FROM ABOUT 1000 TO 1350*C., THE ADDITIONAL FROZEN METAL HAVING A (110) CRYSTALLOGRAPHIC ORIENTATION AT THE TERMINATION OF PROCESSING.
Claim 2
Dependent Claim
142 words
A PROCESS FOR PRODUCTION SHEETS CONSISTING ESSENTIALLY OF FROM ABOUT 1.5 TO 4.5 WEIGHT PERCENT SILICON, BALANCE SUBSTANTIALLY ALL IRON AND HAVING THEIR CONSTITUENT GRAINS ORIENTED IN THE (110) (001) CRYSTALLOGRAPHIC ORIENTATION, COMPRISING THE STEPS OF SUBJECTING A (110) (001) GRAIN ORIENTED MATRIX SHEET OF UP TO ABOUT 25 MILS THICKNESS TO A DRY HYDROGEN ATOMSPHERE HAVING A DEW POINT NO HIGHER THAN ABOUT -60*F. AT A TEMPERATURE OF FROM ABOUT 700 TO 1000*C. TO CLEAN THE SURFACE THEREOF, IMMERSING THE MATRIX SHEET IN A BATH OF MOLTEN SILICON-IRON ALLOY OF SUBSTANTIALLY THE SAME COMPOSITION AS THE MATRIX TO FREEZE ADDITIONAL METAL THEREON, AIR COOLING THE MATRIX SHEET AND FROZEN METAL AND ANNEALING THE COOLED PRODUCT IN A NON-OXIDIZING ATMOSPHERE AT TEMPERATURES OF FROM ABOUT 1000 TO 1350*C., THE ADDITIONAL FROZEN METAL HAVING A (110) CRYSTALLOGRAPHIC ORIENTATION AT THE TERMINATION OF PROCESSING.
References Cited (Backward Citations)
US2854732A
Cited
US3073729A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |