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US3147158A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for producing cube-on-edge oriented silicon iron

Assignee: General Electric Co
•
Filing: 1961-11-22
•
Granted: 1964-09-01
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Expires: 1981-11-22
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Abstract

No abstract record available.

Inventors

  • 👤 Howard C Fiedler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 18:30
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/02

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 188 words
A PROCESS FOR PRODUCING SILICON-IRON BODIES HAVING A MAJORITY OF THE CONSTITUENT GRAINS ORIENTED IN THE (110)(001) TEXTURE, COMPRISING PROVIDING A SILICON-IRON BODY COMPOSED OF FROM 1.5 TO 4.0 PERCENT SILICON, BALANCE SUBSTANTIALLY ALL IRON AND CONTAINING MINOR ADDITIONS CAPABLE OF FORMING A SECOND PHASE DISPERSION, SAID ADDITIONS BEING UP TO ABOUT 0.15 PERCENT MAGANESE, UP TO ABOUT 2.0 PERCENT VANADIUM, UP TO ABOUT 0.10 PERCENT TITANIUM, UP TO ABOT 0.035 PERCENT CARBON, UP TO ABOUT 0.03 PERCENT SULFUR AND UP TO ABOUT 0.005 PERCENT OF NITROGEN, QUENCHING THE SILICON-IRON ALLOY FROM A TEMPERATURE NOT LESS THAN ABOUT 1325*C. WHERETHE MINOR ADDITIONS ARE IN SOLUTION AT A RATE RETAINING THEM IN SOLUTION, HEAT TREATING THE QUENCHED ALLOY AT A TEMPERATURE OF FROM ABOUT 900*C. TO ABOUT 110*C. PRECIPITATING A FINELY DIVIDED, EVENLY DISPERSED SECOND PHASE ASSISTING DEVELOPMENT OF THE (110)(001) GRAIN ORIENTATION, COLD ROLLING THE QUENCHED AND HEAT TREATED ALLOY TO A DESIRED FINAL THICKNESS, AND SUBJECTING THE COLD ROLLED ALLOY TO A FINAL RECRYSTALLIZING ANNEAL AT A TEMPERATURE OF FROM ABOUT 950*C. TO 1050* C. TO EFFECT SECONDARY RECRYSTALLIZATION THEREOF AND DEVELOP THE DESIRED (110)(001) CRYSTALLINE ORIENTATION.
Claim 2
Dependent Claim 188 words
A PROCESS FOR PRODUCING SILICON-IRON BODIES HAVING A MAJORITY OF THE CONSTITUENT GRAINS ORIENTED IN THE (110)(001) TEXTURE, COMPRISING PROVIDING A SILICON-IRON BODY COMPOSED OF FROM 1.5 TO 4.0 PERCENT SILICON, BALANCE SUBSTANTIALLY ALL IRON AND CONTAINING MINOR ADDITIONS CAPABLE OF FORMING A SECOND PHASE DISPERSION, SAID ADDITIONS BEING UP TO ABOUT 0.15 PERCENT MAGANESE, UP TO ABOUT 2.0 PERCENT VANADIUM, UP TO ABOUT 0.10 PERCENT TITANIUM, UP TO ABOT 0.035 PERCENT CARBON, UP TO ABOUT 0.03 PERCENT SULFUR AND UP TO ABOUT 0.005 PERCENT OF NITROGEN, QUENCHING THE SILICON-IRON ALLOY FROM A TEMPERATURE NOT LESS THAN ABOUT 1325*C. WHERETHE MINOR ADDITIONS ARE IN SOLUTION AT A RATE RETAINING THEM IN SOLUTION, HEAT TREATING THE QUENCHED ALLOY AT A TEMPERATURE OF FROM ABOUT 900*C. TO ABOUT 110*C. PRECIPITATING A FINELY DIVIDED, EVENLY DISPERSED SECOND PHASE ASSISTING DEVELOPMENT OF THE (110)(001) GRAIN ORIENTATION, COLD ROLLING THE QUENCHED AND HEAT TREATED ALLOY TO A DESIRED FINAL THICKNESS, AND SUBJECTING THE COLD ROLLED ALLOY TO A FINAL RECRYSTALLIZING ANNEAL AT A TEMPERATURE OF FROM ABOUT 950*C. TO 1050* C. TO EFFECT SECONDARY RECRYSTALLIZATION THEREOF AND DEVELOP THE DESIRED (110)(001) CRYSTALLINE ORIENTATION.

References Cited (Backward Citations)

US745829A Cited
US2140374A Cited
US2209686A Cited
US2599340A Cited
US2867558A Cited
US3069299A Cited
US3008857A Cited
US3008856A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1967-09-01 1968-03-02 1968-09-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1971-09-01 1972-03-02 1972-09-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1975-09-01 1976-03-02 1976-09-01 $7700.00 Window Closed / Lapsed

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