US2534141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-treatment of cold rolled silicon steel strip
Assignee: General Electric Co
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Filing: 1948-01-14
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Granted: 1950-12-12
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Expires: 1968-01-14
Abstract
No abstract record available.
Inventors
- 👤 Morrill Weston
- 👤 Cecil G Dunn
- 👤 Ward Raymond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:38
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/12; C21D8/1244; C21D8/1272; C21D3/00; C21D3/02; C21D3/04; C21D8/1216; C21D8/1233; C21D8/1255; C21D8/1266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF HEAT TREATIN GCOLD ROLLED SILICON STEEL STRIP CONTAINING 1.5 TO 4% SILICON WHICH HAS BEEN DECARBURIZED AT ABOUT 800*C. WHICH METHOD COMPRISES HOLDING THE STRIP IN A TEMPERATURE RANGE OF FROM 850* TO 900*C. WHICH ENCOURAGES THE NUCLEATION OR FIRST APPEARANCE AND GROWTH OF (110) (001) CRYSTALS UNTIL AT LEAST 75% OF THE FINE GRAINED MATRIX HAS BEEN ABSORBED BY THE GROWTH OF SUCH CRYSTALS FOLLOWED BY HEAT TREATMENT AT A HIGHER TEMPERATURE OF FROM 900* TO 200*C. WHICH WILL PERMIT FUTHER GROWTH OF THE (110) (001) CRYSTALS AND PERFECTION OF THE TEXTURE OF SAID COLD ROLLED STRIP AND RELIEVE MECHANICAL STRAIN.
Claim 2
Independent Claim
105 words
THE METHOD OF HEAT TREATIN GCOLD ROLLED SILICON STEEL STRIP CONTAINING 1.5 TO 4% SILICON WHICH HAS BEEN DECARBURIZED AT ABOUT 800*C. WHICH METHOD COMPRISES HOLDING THE STRIP IN A TEMPERATURE RANGE OF FROM 850* TO 900*C. WHICH ENCOURAGES THE NUCLEATION OR FIRST APPEARANCE AND GROWTH OF (110) (001) CRYSTALS UNTIL AT LEAST 75% OF THE FINE GRAINED MATRIX HAS BEEN ABSORBED BY THE GROWTH OF SUCH CRYSTALS FOLLOWED BY HEAT TREATMENT AT A HIGHER TEMPERATURE OF FROM 900* TO 200*C. WHICH WILL PERMIT FUTHER GROWTH OF THE (110) (001) CRYSTALS AND PERFECTION OF THE TEXTURE OF SAID COLD ROLLED STRIP AND RELIEVE MECHANICAL STRAIN.
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) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |