US2984604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Platinum plating composition and process
Assignee: Sel Rex Corp
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Filing: 1958-08-06
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Granted: 1961-05-16
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Expires: 1978-08-06
Abstract
No abstract record available.
Inventors
- 👤 Duva Robert
- 👤 Edwin C Rinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:40
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/12771; Y10T428/12861; Y10T428/12875; Y10T428/12944
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PROCESS FOR ELECTROPLATING RELATIVELY THICK LAYERS OF STRESS-FREE PLATINUM COMPRISING DISSOLVING PLATINUM DIAMINO DINITRITE IN AN AQUEOUS SOLUTION OF SULFAMIC ACID CONTAINING A SUFFICIENT AMOUNT OF SULFAMIC ACID TO DISSOLVE SAID PLATINUM DIAMINO DINITRITE, ADDING WATER TO THE RESULTANT SOLUTION TO PROVIDE A SOLUTION CONTAINING AT LEAST 6 G./LITER OF PLATINUM METAL AND ELECTROLYZING SAID SOLUTION TO PLATE OUT PLATINUM THEREFROM.
Claim 2
Dependent Claim
62 words
A PROCESS FOR ELECTROPLATING RELATIVELY THICK LAYERS OF STRESS-FREE PLATINUM COMPRISING DISSOLVING PLATINUM DIAMINO DINITRITE IN AN AQUEOUS SOLUTION OF SULFAMIC ACID CONTAINING A SUFFICIENT AMOUNT OF SULFAMIC ACID TO DISSOLVE SAID PLATINUM DIAMINO DINITRITE, ADDING WATER TO THE RESULTANT SOLUTION TO PROVIDE A SOLUTION CONTAINING AT LEAST 6 G./LITER OF PLATINUM METAL AND ELECTROLYZING SAID SOLUTION TO PLATE OUT PLATINUM THEREFROM.
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) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |