Nickel electroplating and electrolytes therefor
Abstract
Abstract IN ACCORDANCE WITH CERTAIN OF ITS ASPECTS, THE NOVEL PROCESS OF THIS INVENTION FOR ELECTROPLATING NICKEL MAY COMPRISE ELECTRODEPOSITING NICKEL FROM AN AQUEOUS NICKEL ELECTROPLATING BATH CONTAINING (A) AS A FIRST PRIMARY BRIGHTENER AN EFFECTIVE AMOUNT OF A WATER-SOLUBLE ACETYLENIC COMPOUND, AND (B) AS A SECOND PROMARY BRIGHTENER, AN EFFECTIVE AMOUNT OF A COMPOUND HAVING AS CATION: A-CH2-(+)N<(-)(-R*A) WHEREIN N<(-) IS A PYRIDINE, QUINOLINE, OR ISOQUINOLINE NUCLEUS; A IS 0-5; A IS-CX=CHX OR C$CH; X IS AN ACTIVE HALIDE; AND R* IS A SUBSTITUTENT SELECTED FROM THE GROUP CONSISTING OF ALKYL, PREFERABLY HAVING 1-4 CARBON ATOMS, HYDROXY-ALKYL PREFERABLY HAVING 1-4 CARBON ATOMS, HALOGEN, ALKOXY, CARBOXYL, CARBALKOXY, ACETYL, BENZYL, SULFO, CARBOXAMIDO, AND CYANO.
Inventors
- 👤 Frank Passal
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |