US3723263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition of baths for electrodeposition of bright zinc from aqueous, acid, electroplating baths
Assignee: Hull R & Co Inc
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Filing: 1972-02-25
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Granted: 1973-03-27
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Expires: 1992-02-25
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
2026-10-31 19:05
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
27 words
A bath composition as set forth in claim 1 wherein the polyethylenimine is dissolved therein at a concentration of about 0.5 to about 20 gms. per liter.
Claim 2
Dependent Claim
28 words
A bath composition as set forth in claim 1 wherein the naphthol polyoxyalkylate is dissolved therein at a concentration of about 0.5 to about 20 gms. per liter.
Claim 3
Dependent Claim
50 words
A bath composition as set forth in claim 1 wherein there is also present at least one of the substances selected from the group consisting of anisaldehyde, piperonal, veratraldehyde, benzaldehyde, vanillan, benzylidene acetone, and cinnamic aldehyde, and present in a concentration of about 0.01 to about 10 gms. per liter.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |