US3282747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annealing cube texture iron-silicon sheets
Assignee: Westinghouse Electric Corp
•
Filing: 1964-04-13
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Granted: 1966-11-01
•
Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 Foster Karl
- 👤 Goldman Alex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:55
CPC Classifications
C; C21; C21D; C21D1/00; C21D1/68; C21D1/70; C23; C23C; C23C24/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A PROCESS FOR THE ANNEALING OF IRON-SILICON SHEETS IN STACKS OR COILS TO OBTAIN TRANSFORMATION TO CUBE TEXTURE, COATING THE SHEETS ON AT LEAST ONE SIDE THEREOF WITH A SLURRY COMPRISING WATER AND ALUMINA POWDER, THE ALUMINA POWDER HAVING BEEN OBTAINED BY THE DECOMPOSITION OFF AN ALUMINUM SALT AT ELEVATED TEMPERATURE AND THEREAFTER CALCINED TO PRODUCE ALPHA-PHASE AL2O3, HEATING THE COATED SHEET TO DRY THE SLURRY LEAVING A CONTINUOUS POROUS COATING OF NON-REACTIVE ALUMINA POWDER ON THE SHEET, AND ANNEALING THE SHEET TO DEVELOP CUBE TEXTURE THEREIN.
Claim 2
Dependent Claim
88 words
IN A PROCESS FOR THE ANNEALING OF IRON-SILICON SHEETS IN STACKS OR COILS TO OBTAIN TRANSFORMATION TO CUBE TEXTURE, COATING THE SHEETS ON AT LEAST ONE SIDE THEREOF WITH A SLURRY COMPRISING WATER AND ALUMINA POWDER, THE ALUMINA POWDER HAVING BEEN OBTAINED BY THE DECOMPOSITION OFF AN ALUMINUM SALT AT ELEVATED TEMPERATURE AND THEREAFTER CALCINED TO PRODUCE ALPHA-PHASE AL2O3, HEATING THE COATED SHEET TO DRY THE SLURRY LEAVING A CONTINUOUS POROUS COATING OF NON-REACTIVE ALUMINA POWDER ON THE SHEET, AND ANNEALING THE SHEET TO DEVELOP CUBE TEXTURE THEREIN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |