Patent US2839459A successfully refreshed from Google Patents.
US2839459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating
Assignee: Hanson Van Winkle Munning Co
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Filing: 1956-11-16
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Granted: 1958-06-17
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Expires: 1976-11-16
Abstract
No abstract record available.
Inventors
- 👤 Foulke Donald Gardner
- 👤 Kardos Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:25
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE PROCESS FOR PRODUCING BRIGHT NICKEL DEPOSIT WHICH COMPRISES ELECTRODEPOSITING NICKEL FROM AN AQUEOUS ACIDIC NICKEL ELECTROPLATING SOLUTION IN WHICH THERE IS DISSOLVED FROM ABOUT 0.005 TO ABOUT 1 GRAM PER LITER OF AN AROMATIC HETEROCYCLIC CARBON-NITROGEN COMPOUND HAVING A SIX-MEMBERED CYCLIC NUCLEUS CONTAINING FROM 1 TO 3 NITROGEN ATOMS AND AT LEAST ONE AMINO GROUP ATTACHED TO A CARBON ATOM IN A POSITION ALPHA TO THE HETEROCYCLIC NITROGEN, AND FROM ABOUT 1/4 TO ABOUT 80 GRAMS PER LITER OF WATER-SOLUBLE SULFO-OXYGEN COMPOUND OF THE GROUP CONSISTING OF UNSATURATED ALIPHATIC SULFONIC ACIDS, MONONUCLEAR AND BINUCLEAR AROMATIC SULFONIC ACIDS, HETEROCYCLIC SULFONIC ACIDS, MONONUCLEAR SULFINIC ACIDS, THE ALKALI METAL, AMMONIUM, MAGNESIUM, AND NICKEL SALTS OF SAID ACIDS, AND MONONUCLEAR AROMATIC SULFONAMIDES AND SULFONIMIDES.
Claim 2
Dependent Claim
121 words
THE PROCESS FOR PRODUCING BRIGHT NICKEL DEPOSIT WHICH COMPRISES ELECTRODEPOSITING NICKEL FROM AN AQUEOUS ACIDIC NICKEL ELECTROPLATING SOLUTION IN WHICH THERE IS DISSOLVED FROM ABOUT 0.005 TO ABOUT 1 GRAM PER LITER OF AN AROMATIC HETEROCYCLIC CARBON-NITROGEN COMPOUND HAVING A SIX-MEMBERED CYCLIC NUCLEUS CONTAINING FROM 1 TO 3 NITROGEN ATOMS AND AT LEAST ONE AMINO GROUP ATTACHED TO A CARBON ATOM IN A POSITION ALPHA TO THE HETEROCYCLIC NITROGEN, AND FROM ABOUT 1/4 TO ABOUT 80 GRAMS PER LITER OF WATER-SOLUBLE SULFO-OXYGEN COMPOUND OF THE GROUP CONSISTING OF UNSATURATED ALIPHATIC SULFONIC ACIDS, MONONUCLEAR AND BINUCLEAR AROMATIC SULFONIC ACIDS, HETEROCYCLIC SULFONIC ACIDS, MONONUCLEAR SULFINIC ACIDS, THE ALKALI METAL, AMMONIUM, MAGNESIUM, AND NICKEL SALTS OF SAID ACIDS, AND MONONUCLEAR AROMATIC SULFONAMIDES AND SULFONIMIDES.
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) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |