US3042556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating steel
Assignee: General Electric Co
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Filing: 1960-02-02
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Granted: 1962-07-03
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Expires: 1980-02-02
Abstract
No abstract record available.
Inventors
- 👤 George R Hemmeter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:54
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1216; C21D8/1233; C21D8/1244; C21D8/1266; C21D8/1272
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PROCESS OF TREATING SILICON STRIP STEEL HAVING A SILICON CONTENT BETWEEN 0.25 PERCENT AND 3.5 PERCENT AND HOT ROLLED TO A THICKNESS BETWEEN .05 AND 1.25 INCH, SAID PROCESS COMPRISING THE STEPS OF: COLD ROOLING SAID STRIP TO AN INTERMEDIATE THICKNESS WHICH WHEN REDUCED TO FINAL GAUGE WILL PRODUCE A PREDETERMINED ELONGATION BETWEEN 2 AND 12 PERCENT IN THE STRIP, HEATING SAID STRIP AT A NORMALIZING TEMPERATURE FOR A PERIOD SUFFICIENT TO EFFECT RECRYSTALLIZATION WITHOUT APPRECIABLE GRAIN GROWTH, COLD ROLLING SAID STRIP TO FINAL GAUGE, AND ANNEALING SAID STRIP AT A TEMPERATURE RANGING FROM 1650 TO 2100 DEGREES FAHRENHEIT FOR A PREDETERMINED PERIOD OF TIME RANGING FROM 15 SECONDS TO 15 MINUTES AT A TEMPERATURE WHICH WILL PRODUCE A MINIMUM CORE LOSS FOR SAID PREDETERMINED PERIOD OF TIME AND SAID PREDETERMINED ELONGATION, INCREASING SAID ELONGATION CAUSING A DECREASE IN THE ANNEALING TEMPERATURE REQUIRED TO PRODUCE SAID MINIMUM CORE LOSS.
Claim 2
Dependent Claim
150 words
A PROCESS OF TREATING SILICON STRIP STEEL HAVING A SILICON CONTENT BETWEEN 0.25 PERCENT AND 3.5 PERCENT AND HOT ROLLED TO A THICKNESS BETWEEN .05 AND 1.25 INCH, SAID PROCESS COMPRISING THE STEPS OF: COLD ROOLING SAID STRIP TO AN INTERMEDIATE THICKNESS WHICH WHEN REDUCED TO FINAL GAUGE WILL PRODUCE A PREDETERMINED ELONGATION BETWEEN 2 AND 12 PERCENT IN THE STRIP, HEATING SAID STRIP AT A NORMALIZING TEMPERATURE FOR A PERIOD SUFFICIENT TO EFFECT RECRYSTALLIZATION WITHOUT APPRECIABLE GRAIN GROWTH, COLD ROLLING SAID STRIP TO FINAL GAUGE, AND ANNEALING SAID STRIP AT A TEMPERATURE RANGING FROM 1650 TO 2100 DEGREES FAHRENHEIT FOR A PREDETERMINED PERIOD OF TIME RANGING FROM 15 SECONDS TO 15 MINUTES AT A TEMPERATURE WHICH WILL PRODUCE A MINIMUM CORE LOSS FOR SAID PREDETERMINED PERIOD OF TIME AND SAID PREDETERMINED ELONGATION, INCREASING SAID ELONGATION CAUSING A DECREASE IN THE ANNEALING TEMPERATURE REQUIRED TO PRODUCE SAID MINIMUM CORE LOSS.
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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |