US3793159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating plastics
Assignee: Phillips Petroleum Co
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Filing: 1972-05-05
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Granted: 1974-02-19
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Expires: 1992-05-05
Abstract
Abstract In an electroless process for electroplating plastics containing a siliceous filler, a wash solution containing a nonionic surfactant is employed to remove the chromium from the plastic subsequent to the acid chromate etch and before electroplating.
Inventors
- 👤 J Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:22
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/22; C23C18/24; C25; C25D; C25D5/00; C25D5/54; C25D5/56; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/38; H05K3/381
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
26 words
The method of claim 1 in which said contacted surface is rinsed in an aqueous solution consisting essentially of hydrochloric acid and a mono-dialkyl substituted phenoxypoly(ethyleneoxy)ethanol.
Claim 2
Dependent Claim
46 words
The method of claim 1 in which said surfactant is mono-dialkyl substituted phenoxypoly(ethyleneoxy)ethanol in which the alkyl radical contains from eight to 12 carbon atoms and the number of units of ethylene oxide in said surfactant is within the range of from about 1 to 29.
Claim 3
Dependent Claim
21 words
The method of claim 1 in which said surfactant is nonylphenoxypoly(ethyleneoxy)ethanol containing about 8 to 9 repeating units of ethylene oxide.
Claim 4
Dependent Claim
34 words
The method of claim 1 in which said surfactant is contained in said aqueous solution in an amount of at least about 5 parts by volume per million parts by volume of said solution.
Claim 5
Dependent Claim
39 words
The method of claim 5 in which said surfactant is contained in said aqueous solution in an amount within the range of from about 8 to about 150 parts by volume per million parts by volume of said solution.
Claim 6
Dependent Claim
21 words
The method of claim 1 in which said solution contains hydrochloric acid in an amount of about 25 percent by volume.
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |