US3562011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulating coating comprising an aqueous mixture of the reaction product of chromium nitrate and sodium chromate,phosphoric acid and colloidal silica and method of making the same
Assignee: General Electric Co
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Filing: 1968-04-26
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Granted: 1971-02-09
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Expires: 1988-04-26
Abstract
Abstract ELECTRICALLY INSULATING COATING FOR STRAND ANNEALED MAGNETIC SILICON STEEL IS COMPOSED OF AN AQUEOUS MIXTURE OF (1) REACTION PRODUCT OF CHROMIUM NITRATE AND SODIUM CHROMATE, (2) PHOSPHORIC ACID AND (3) COLLOIDAL SILICA.
Inventors
- 👤 Robert G Hirst
- 👤 Daniel W Mcmorris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:59
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/0206; C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; H01B; H01B3/00; H01B3/002; H01B3/006; H01F27/00; H01F27/24; Y; Y10; Y10S; Y10S428/00; Y10S428/90
Claims Analysis
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |