Electroless nickel solution
Abstract
Abstract THE INVENTION RELATES TO ELECTROLESS NICKEL SOLUTIONS CHARACTERIZED BY THE ADDITION OF A SMALL BUT EFFECTIVE AMOUNT OF A SOURCE OF IODATE IONS FOR INCREASED BATH STABILITY. IT IS KNOWN IN THE ART THAT SOLUTIONS FOR ELECTROLESS NICKEL PLATING ARE UNSTABLE AND TEND TO DECOMPOSE WITH USE. IT IS ALSO KNOWN THAT DECOMPOSITION CAN BE RETARDED AND THE USEFUL LIFE OF A PLATING SOLUTION INCREASED BY THE ADDITION OF VARIOUS ADDITIVES, FREQUENTLY CATALYTIC POISONS, IN VERY SMALL CONCENTRATIONS. IN ACCORDANCE WITH THE PRESENT INVENTION, IT HAS BEEN FOUND THAT THE STABILITY OF AN ELECTROLESS NICKEL PLATING SOLUTION CAN BE SUBSTANTIALLY INCREASED BY THE ADDITION OF A SOURCE OF CUPROUS IONS.
Inventors
- 👤 M Gulla
- 👤 O Dutkewych
Bibliographic Details
Claims Analysis
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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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |