US2919233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amphoteric metal electroplating processes
Assignee: Individual
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Filing: 1957-10-17
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Granted: 1959-12-29
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Expires: 1977-10-17
Abstract
No abstract record available.
Inventors
- 👤 Cox George Chandler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:58
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE PROCESS OF ELECTRLYTICALLY DEPOSITING AN AMPHOTERIC METAL, SELECTED FROM THE GROUP CONSISTING OF LEAD, TIN AND ZINC, ON A FERROUS METAL STRUCTURE WHICH COMPRISES COATING SAID STRUCTURE WITH A FIRMLY ADHERENT AMPHOTERIC COATING COMPLEX OF LOW SOLUBILITY CONTAINING THE METAL TO BE DEPOSITED, AND THEN SUBJECTING SAID COATED STRUCTURE TO A CATHODIC CURRENT DENSITY OF SUFFICIENT MAG NITUDE IN AN ELECTRLYTE CONTAINING A SOLUBLE ALKALI METAL SALT WHICH WILL LIBERATE A HYDSROXIDE OF THE ALKALI METAL AT THE CATHODE THEREBY SOLUBILIZING THE AMPHOTERIC METAL COMPONENT OF TH AMPHOTERIC COATING COMPLEX AT THE CATHODE INTERFACE WHILE AT THE SAME TIME ELECTRODEPOSITING ON THE CATHODE THE SELECTED AMPHOTERIC METAL FROM THE SOLUBILIZED PRODUCT.
Claim 2
Dependent Claim
112 words
THE PROCESS OF ELECTRLYTICALLY DEPOSITING AN AMPHOTERIC METAL, SELECTED FROM THE GROUP CONSISTING OF LEAD, TIN AND ZINC, ON A FERROUS METAL STRUCTURE WHICH COMPRISES COATING SAID STRUCTURE WITH A FIRMLY ADHERENT AMPHOTERIC COATING COMPLEX OF LOW SOLUBILITY CONTAINING THE METAL TO BE DEPOSITED, AND THEN SUBJECTING SAID COATED STRUCTURE TO A CATHODIC CURRENT DENSITY OF SUFFICIENT MAG NITUDE IN AN ELECTRLYTE CONTAINING A SOLUBLE ALKALI METAL SALT WHICH WILL LIBERATE A HYDSROXIDE OF THE ALKALI METAL AT THE CATHODE THEREBY SOLUBILIZING THE AMPHOTERIC METAL COMPONENT OF TH AMPHOTERIC COATING COMPLEX AT THE CATHODE INTERFACE WHILE AT THE SAME TIME ELECTRODEPOSITING ON THE CATHODE THE SELECTED AMPHOTERIC METAL FROM THE SOLUBILIZED PRODUCT.
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) | 1962-12-28 | 1963-06-29 | 1963-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-28 | 1967-06-29 | 1967-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-28 | 1971-06-29 | 1971-12-29 | $7700.00 | Window Closed / Lapsed |