US3778358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zinc plating solution
Assignee: Solvay Solutions UK Ltd
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Filing: 1972-07-06
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Granted: 1973-12-11
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Expires: 1992-07-06
Abstract
Abstract ELECTROLYTE SOLUTION FOR USE IN THE ELECTRODEPOSITION OF ZINC COMPRISES AN AQUEOUS SOLUTION OF (A) ZINC SULPHAMATE AND (B) FLUOROBORIC ACID AND/OR ONE OR MORE SOLUBLE SALTS OF FLUOROBORIC ACID AND/OR A COMBINATION OF FLUOROBORIC ACID AND HYDROFLUORIC ACID. PREFERRED SOLUTIONS COMPRISE 0.5 TO 4 MOLS PER LITRE ZINC SULPHAMATE AND 0.01 TO 0.5 MOLS PER LITRE FLUOROBORIC ACID. BRIGHTENING AGENTS, E.G. 1 TO 75 GMS. PER LITRE BORIC ACID, AND LEVELLING AGENTS, E.G. 0.05 TO 1 GM. PER LITRE GELATIN, MAY ALSO BE PRESENT.
Inventors
- 👤 Holker K Urmston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:12
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |