US2994648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel plating additives
Assignee: Harshaw Chemical Co
•
Filing: 1960-04-22
•
Granted: 1961-08-01
•
Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Rose Arthur H Du
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:49
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A NICKEL ELECTROPLATING BATH COMPRISING AN AQUEOUS SOLUTION OF NICKEL ELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, AND MIXTURES THEREOF, SAID SOLUTION ALSO CONTAINING COOPERATING BRIGHTENING ADDITION AGENTS, ONE OF SAID BRIGHTENING ADDITION AGENTS BEING AT LEAST ONE ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AROMATIC AND UNSATURATED ALIPHATIC SULFONATES, SULFONAMIDES, AND SULFIMIDES, AND THE SECOND OF SAID BRIGHTENING ADDITION AGENTS BEING A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
72 words
A NICKEL ELECTROPLATING BATH COMPRISING AN AQUEOUS SOLUTION OF NICKEL ELECTROLYTE SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, AND MIXTURES THEREOF, SAID SOLUTION ALSO CONTAINING COOPERATING BRIGHTENING ADDITION AGENTS, ONE OF SAID BRIGHTENING ADDITION AGENTS BEING AT LEAST ONE ORGANIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AROMATIC AND UNSATURATED ALIPHATIC SULFONATES, SULFONAMIDES, AND SULFIMIDES, AND THE SECOND OF SAID BRIGHTENING ADDITION AGENTS BEING A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2467580A
Cited
US2882208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |