Chromium-nickel plating
Abstract
Abstract THIS INVENTION COMPRISES A COMPOSITE OR LAMINATED METALLIC COATING, AND A PROCESS FOR MAKING SUCH COATING, COMPRISING A FIRST LAYER OF NICKEL AND AN OVERLYING LAYER OF CHROMIUM, THE LAMINATE BEING CRACKED IN A CRAZE PATTERN IN THE RANGE OF 300 TO 3000 CRACKS PER LINEAL INCH PREPARED BY ELECTRODEPOSITING ON A METAL SUBSTRATE A STRESSED LAYER OF NICKEL AND THEREAFTER ELECTRODEPOSITING ON THIS STRESSED LAYER OF NICKEL A STRESSED LAYER OF CHROMIUM ADHERENT TO THE STRESSED LAYER OF NICKEL AND HEATING THE RESULTANT LAMINATE. THE STRESSING IN THE RESPECTIVE LAYERS MAY BE EFFECTED BY MEANS OF AN ADDICTIVE IN THE ELECTROPLATING SOLUTION FROM WHICH IT IS PRODUCED. THE RESULTANT CRAZING GIVES AN IMPROVED PROTECTION AGAINST CORROSION.
Inventors
- 👤 Arthur H Du Rose
- 👤 Karl S Willson
- 👤 Gustavo C Tejada
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |