Patent US2920023A successfully refreshed from Google Patents.
US2920023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cleaning of metal and composition therefor
Assignee: Old Carco LLC
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Filing: 1955-04-04
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Granted: 1960-01-05
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Expires: 1975-04-04
Abstract
No abstract record available.
Inventors
- 👤 D Aquila Carl
- 👤 Jr Raymond E Bohne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:00
CPC Classifications
C; C25; C25F; C25F1/00; C25F1/02; C25F1/12; C25F1/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A COMPOSITION FOR A MOLTEN ELECTROLYTIC FERROUS METAL CLEANING BATH COMPRISING CAUSTIC ALKALI SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE AND MIXTURES THEREOF AND ALKALI FLUOBORATE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM FLUOBORATE AND POTASSIUM FLUOBORATE AND MIXTURES THEREOF, SAID ALKALI FLUOBORATE SALT BEING PRESENT IN THE PROPORTION OF ABOUT THREE PARTS BY WEIGHT THEREOF TO ABOUT 97 PARTS BY WEIGHT OF THE CAUSTIC ALKALI.
Claim 2
Dependent Claim
71 words
A COMPOSITION FOR A MOLTEN ELECTROLYTIC FERROUS METAL CLEANING BATH COMPRISING CAUSTIC ALKALI SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE AND MIXTURES THEREOF AND ALKALI FLUOBORATE SALT SELECTED FROM THE GROUP CONSISTING OF SODIUM FLUOBORATE AND POTASSIUM FLUOBORATE AND MIXTURES THEREOF, SAID ALKALI FLUOBORATE SALT BEING PRESENT IN THE PROPORTION OF ABOUT THREE PARTS BY WEIGHT THEREOF TO ABOUT 97 PARTS BY WEIGHT OF THE CAUSTIC ALKALI.
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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |