US3617455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for molten salt bath electrolytic descaling of ferrous metal strip
Assignee: Kolene Corp
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Filing: 1969-02-05
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Granted: 1971-11-02
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Expires: 1989-02-05
Abstract
Abstract Molten salt bath electrolytic descaling apparatus and process employing an electrical shield of aluminum around an immersed cast iron roll and electrically charged oppositely from the electrical charge on the strip to prevent current flow from the strip to the electrolyte through the roll.
Inventors
- 👤 Robert H Shoemaker
- 👤 John A Faler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:49
CPC Classifications
C; C25; C25F; C25F7/00; Y; Y10; Y10S; Y10S204/00; Y10S204/07
Claims Analysis
Total Claims: 0
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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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |