US3287183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing single-oriented silicon steel sheets having a high magnetic induction
Assignee: Yawata Iron and Steel Co Ltd
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Filing: 1964-06-22
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Granted: 1966-11-22
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Expires: 1984-06-22
Abstract
No abstract record available.
Inventors
- 👤 Taguchi Satoru
- 👤 Sakakura Akira
- 👤 Takashima Hironori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:53
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A PROCESS FOR PRODUCING SINGLE-ORIENTED SILICON STEEL SHEET OF (110) 001! ORIENTATION, IN WHICH A SILICON STEEL INGOT COMPOSED OF 0.025 TO 0.085 WT. PERCENT C, 2.5 TO 4.0 WT. PERCENT SI, 0.010 TO 0.050 WT. PERCENT ACID-SOLUBLE AL AND 0.005 TO 0.050 WT. PERCENT S AND THE REST BEING IRON IS HOT-ROLLED TO PRODUCE A HOT-ROLLED STEEL SHEET, SAID HOTROLLED STEEL SHEET IS SUBJECTED TO AN ANNEALING AND COLDROLLING TO OBTAIN A STEEL SHEET OF FINAL THICKNESS, SAID STEEL SHEET OF FINAL THICKNESS IS THEREAFTER SUBJECTED TO AN ANNEALING FOR DECARBURIZATION AND FURTHER FOR SECONDARY RECRYSTALLIZATION, COMPRISING THE STEPS OF HOT-ROLLING A MATERIAL, IN WHICH THE RATIO OF S AND ACID-SOLUTION AL IS MADE TO BE
Claim 2
Dependent Claim
117 words
A PROCESS FOR PRODUCING SINGLE-ORIENTED SILICON STEEL SHEET OF (110) 001! ORIENTATION, IN WHICH A SILICON STEEL INGOT COMPOSED OF 0.025 TO 0.085 WT. PERCENT C, 2.5 TO 4.0 WT. PERCENT SI, 0.010 TO 0.050 WT. PERCENT ACID-SOLUBLE AL AND 0.005 TO 0.050 WT. PERCENT S AND THE REST BEING IRON IS HOT-ROLLED TO PRODUCE A HOT-ROLLED STEEL SHEET, SAID HOTROLLED STEEL SHEET IS SUBJECTED TO AN ANNEALING AND COLDROLLING TO OBTAIN A STEEL SHEET OF FINAL THICKNESS, SAID STEEL SHEET OF FINAL THICKNESS IS THEREAFTER SUBJECTED TO AN ANNEALING FOR DECARBURIZATION AND FURTHER FOR SECONDARY RECRYSTALLIZATION, COMPRISING THE STEPS OF HOT-ROLLING A MATERIAL, IN WHICH THE RATIO OF S AND ACID-SOLUTION AL IS MADE TO BE
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |