US3149058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright gold plating process
Assignee: Technic Inc
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Filing: 1959-12-31
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Granted: 1964-09-15
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 Edward A Parker
- 👤 James A Powers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:31
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A METHOD OF ELECTRODEPOSITING BRIGNT, HARD GOLD IN SUBSTANTIALLY PURE FORM WHICH COMPRISES ELECTROLYZING A SOLUTION COMPRISING A WEAK, STABLE, ORGANIC ACID IN AMOUNT SUFFICIENT TO PROVIDE A PH OF 3-5, GOLD AS AN ALKALI METAL GOLD CYANIDE, AND A NICKEL (II) CHELATE OF AN AMINOPOLYCARBOXYLIC ACID CHELATING AGENT, SAID NICKEL BEING IN A SUBSTANTIALLY NON-IONIZED FORM, AND BEING RETAINED IN SOLUTION WITHOUT SIGNIFICANT DEPOSITION UNDER PLATING CONDITIONS.
Claim 2
Independent Claim
68 words
A METHOD OF ELECTRODEPOSITING BRIGNT, HARD GOLD IN SUBSTANTIALLY PURE FORM WHICH COMPRISES ELECTROLYZING A SOLUTION COMPRISING A WEAK, STABLE, ORGANIC ACID IN AMOUNT SUFFICIENT TO PROVIDE A PH OF 3-5, GOLD AS AN ALKALI METAL GOLD CYANIDE, AND A NICKEL (II) CHELATE OF AN AMINOPOLYCARBOXYLIC ACID CHELATING AGENT, SAID NICKEL BEING IN A SUBSTANTIALLY NON-IONIZED FORM, AND BEING RETAINED IN SOLUTION WITHOUT SIGNIFICANT DEPOSITION UNDER PLATING CONDITIONS.
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) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |