US2801215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic ferrous metal cleaning
Assignee: Kolene Corp
•
Filing: 1956-02-08
•
Granted: 1957-07-30
•
Expires: 1976-02-08
Abstract
No abstract record available.
Inventors
- 👤 Hugh G Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
C; C25; C25F; C25F1/00; C25F1/02; C25F1/12; C25F1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR ELECTROLYTIC CLEANING OF FERROUS METAL WHICH COMPRISES IMMERSING THE METAL IN A DRY SOLID MOLTEN SALT BATH COMPRISING 75 TO 99.5% BY WEIGHT OF ALKALI METAL HYDROXIDE AND THE REMAINDER COMPRISING A SUBSTANTIAL PROPORTION TOTALLING AT LEAST 0.5% BY WEIGHT OF COMPOUNDS COMPRISING ALKALI METAL SILICATE AND ALKALI METAL FLUORIDE, SAID FLUORIDE AND SILICATE BEING EACH PRESENT ALKALI METAL FLUOSILICATE AND CLEANING THE METAL BY PASSING CURRENT THROUGH SAID METAL AS AN ELECTRODE WHILE IMMERSED IN SAID BATH.
Claim 2
Dependent Claim
81 words
A PROCESS FOR ELECTROLYTIC CLEANING OF FERROUS METAL WHICH COMPRISES IMMERSING THE METAL IN A DRY SOLID MOLTEN SALT BATH COMPRISING 75 TO 99.5% BY WEIGHT OF ALKALI METAL HYDROXIDE AND THE REMAINDER COMPRISING A SUBSTANTIAL PROPORTION TOTALLING AT LEAST 0.5% BY WEIGHT OF COMPOUNDS COMPRISING ALKALI METAL SILICATE AND ALKALI METAL FLUORIDE, SAID FLUORIDE AND SILICATE BEING EACH PRESENT ALKALI METAL FLUOSILICATE AND CLEANING THE METAL BY PASSING CURRENT THROUGH SAID METAL AS AN ELECTRODE WHILE IMMERSED IN SAID BATH.
References Cited (Backward Citations)
US2615840A
Cited
US2468006A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |