US3791941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gold plating bath for barrel plating operations
Assignee: Auric Corp
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Filing: 1972-10-13
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Granted: 1974-02-12
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Expires: 1992-10-13
Abstract
Abstract AN ELECTROPLATING BATH PARTICULARLY SUITED FOR BARREL PLATING OPERATIONS. THE BATH INCLUDES IN ADDITION TO AN ALKALI-GOLD CYANIDE, A BATH SOLUBLE SA''T OF N,N-DIH-2-HYDROXYETHYLGLYCINE OR OF GLYCINE, OR GLYCINE ITSELF MAY BE UTILIZED. THE BATH FURTHER INCLUDES QUANTITIES OF HYDRAZINE, SMALL AMOUNTS OF ARSENIC AND/OR LEAD ION, AND A BUFFERING AGENT SUCH AS PHOSPHATE ION.
Inventors
- 👤 M Bick
- 👤 J Lochet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:55
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/48
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |