US3620804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal plating of thermoplastics
Assignee: Borg Warner Corp
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Filing: 1969-01-22
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Granted: 1971-11-16
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Expires: 1989-01-22
Abstract
Abstract A method of electrolessly plating a thermoplastic substrate with a metal, such as copper, nickel or cobalt, prior to application of an electrolytically deposited metal. A novel surface treatment step which includes an improved neutralizer for the conventional chrome-containing chemical etch, is effective in promoting electroless metal coverage and the adhesion between the electroless metal layer and the substrate.
Inventors
- 👤 Randy L Bauer
- 👤 David C Johnson
- 👤 Ronald M Noss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:05
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/2006; C23C18/2026; C23C18/2033; C23C18/2046; C23C18/2073; C23C18/208; C23C18/22; C23C18/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
13 words
A method as defined in claim 1, wherein said composition contains aMmonium acetate.
Claim 2
Dependent Claim
13 words
A method as defined in claim 1, wherein said composition contains ammonium nitrate.
Claim 3
Dependent Claim
14 words
A method as defined in claim 1, wherein said composition contains nickel ammonium sulfate.
Claim 4
Dependent Claim
14 words
A method as defined in claim 1, wherein said composition contains sodium ammonium phosphate.
Claim 5
Dependent Claim
14 words
A method as defined in claim 1, wherein said composition contains ammonium phosphate (diabasic).
Claim 6
Dependent Claim
14 words
A method as defined in claim 1, wherein said composition contains ammonium phosphate (monobasic).
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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |