Patent US1065144A successfully refreshed from Google Patents.
US2986499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electropolishing steel
Assignee: EIDP Inc
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Filing: 1958-01-17
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Granted: 1961-05-30
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Expires: 1978-01-17
Abstract
No abstract record available.
Inventors
- 👤 Christian J Wernlund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:29
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/22; C25F3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE PROCESS FOR ELECTROPOLISHING FERROUS ARTICLES WHICH COMPRISES ANODICALLY REMOVING IRON FROM SAID ARTICLE AND DEPOSITING IRON ON THE CATHODE IN AN ELECTROLYTE CONTAINING BY WEIGHT BETWEEN ABOUT 10% AND 40% WATER, 0.5% TO 48% FLUOBORIC ACID AND THE BALANCE IRON FLUOBORATE.
Claim 2
Dependent Claim
42 words
THE PROCESS FOR ELECTROPOLISHING FERROUS ARTICLES WHICH COMPRISES ANODICALLY REMOVING IRON FROM SAID ARTICLE AND DEPOSITING IRON ON THE CATHODE IN AN ELECTROLYTE CONTAINING BY WEIGHT BETWEEN ABOUT 10% AND 40% WATER, 0.5% TO 48% FLUOBORIC ACID AND THE BALANCE IRON FLUOBORATE.
References Cited (Backward Citations)
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US2502337A
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US2523160A
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US2542779A
Cited
US2745800A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |