US2570174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal cleaning and plating process
Assignee: General Electric Co
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Filing: 1947-11-12
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Granted: 1951-10-02
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Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 Carl F Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:18
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/38; C25D5/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE METHOD OF REPLATING A NICKEL PLATED ARTICLE FROM WHICH A CHROMIUM PLATE HAS BEEN STRIPPED BY ANODIC TREATMENT IN A CAUSTIC ALKALI SOLUTION FOR REPLATING, WHICH METHOD COMPRISES IMMERSING THE NICKEL PLATED ARTICLE IN A STRONG HYDROCHLORIC ACID SOLUTION AND PASSING A CURRENT THROUGH SAID ARTICLE AS THE CATHODE FOR ABOUT ONE MINUTE AT A CURRENT DENSITY OF FROM 75 TO 100 AMPERES PER SQUARE FOOT, APPLYING A FLASH COATING OF COPPER ONTO SAID ARTICLE AND NICKEL PLATING THE COPPER FLASHED ARTICLE.
Claim 2
Independent Claim
83 words
THE METHOD OF REPLATING A NICKEL PLATED ARTICLE FROM WHICH A CHROMIUM PLATE HAS BEEN STRIPPED BY ANODIC TREATMENT IN A CAUSTIC ALKALI SOLUTION FOR REPLATING, WHICH METHOD COMPRISES IMMERSING THE NICKEL PLATED ARTICLE IN A STRONG HYDROCHLORIC ACID SOLUTION AND PASSING A CURRENT THROUGH SAID ARTICLE AS THE CATHODE FOR ABOUT ONE MINUTE AT A CURRENT DENSITY OF FROM 75 TO 100 AMPERES PER SQUARE FOOT, APPLYING A FLASH COATING OF COPPER ONTO SAID ARTICLE AND NICKEL PLATING THE COPPER FLASHED ARTICLE.
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) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |