US2875113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of decarburizing silicon steel in a wet inert gas atmosphere
Assignee: General Electric Co
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Filing: 1957-11-15
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Granted: 1959-02-24
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Expires: 1977-11-15
Abstract
No abstract record available.
Inventors
- 👤 Elmore J Fitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:33
CPC Classifications
C; C21; C21D; C21D3/00; C21D3/02; C21D3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
THE METHOD OF TREATING SILICON STELL WHICH COMPRISES PRE-CLEANING THE SILICON STEEL, AND HEATING THE SILICON STEEL AT A TEMPERATURE OF 875-1025* C. IN AN STMOSPHERE OF PURE WET INERT GAS.
Claim 2
Independent Claim
31 words
THE METHOD OF TREATING SILICON STELL WHICH COMPRISES PRE-CLEANING THE SILICON STEEL, AND HEATING THE SILICON STEEL AT A TEMPERATURE OF 875-1025* C. IN AN STMOSPHERE OF PURE WET INERT GAS.
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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |