US3767540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for electrodeposition of bright zinc from aqueous, acid, electroplating baths
Assignee: Hull R O and Co Inc
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Filing: 1972-10-12
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Granted: 1973-10-23
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Expires: 1992-10-12
Abstract
Abstract It has been found that upon addition to an aqueous, acid, zinc electroplating bath, naphthol polyoxyalkylate and polyethylenimine act synergistically to provide smooth, bright, ductile, electrodeposits of zinc.
Inventors
- 👤 W Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:55
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22
Claims Analysis
Total Claims: 0
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |