US3689380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for acid copper plating of steel
Assignee: Udylite Corp
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Filing: 1970-03-18
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Granted: 1972-09-05
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Expires: 1990-03-18
Abstract
Abstract A PROCESS FOR THE COPPER ELECTROPLATING OF STEEL, PARTICULARLY COMPLEX STEEL PARTS HAVING RECESSED AREAS, WHEREIN A DISPLACEMENT NICKEL OR COBALT-NICKEL DEPOSIT IS FORMED ON THE STEEL SURFACE BY TREATMENT WITH AN IMMERSION NICKEL OR COBALT-NICKEL PLATING BATH AND, THEREAFTER, THE THUSPLATED SURFACE IS ELECTROPLATED WITH COPPER FROM AN ACID COPPER ELECTROPLATING BATH.
Inventors
- 👤 Richard J Clauss
- 👤 Norman C Adamowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/36; Y; Y10; Y10S; Y10S205/00; Y10S205/917
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |