US2658867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of nickel
Assignee: Harshaw Chemical Co
•
Filing: 1952-03-06
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Granted: 1953-11-10
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Expires: 1972-03-06
Abstract
No abstract record available.
Inventors
- 👤 John D Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:53
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A NICKEL PLATING SOLUTION COMPRISING AN AQUEOUS, ACID SOLUTION OF NICKEL MATERAL SUPPLYING NICKEL IONS AND AN ADDITION AGENT DISSOLVED IN SAID SOLUTION AND CAPABLE OF IMPARTING TO ELECTRODEPOSITS PRODUCED THEREIN IMPROVED RATES OF INCREASING BRIGHTNESS WITH RESPECT TO INCREASING THICKNESS OF DEPOSIT, SAID SOLUTION CONSISTING ESSENTIALLY OF A COMPOSITION FROM THE CLASS CONSITING OF AQUEOUS SOLUTIONS OF NICKEL SULFATE AND AQUEOUS SOLUTIONS OF NICKEL SULFATE AND NICKEL CHLORIDE AND SAID ADDITION AGENT BEING AT LEAST ONE BIS-PYRIDINIUM COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
82 words
A NICKEL PLATING SOLUTION COMPRISING AN AQUEOUS, ACID SOLUTION OF NICKEL MATERAL SUPPLYING NICKEL IONS AND AN ADDITION AGENT DISSOLVED IN SAID SOLUTION AND CAPABLE OF IMPARTING TO ELECTRODEPOSITS PRODUCED THEREIN IMPROVED RATES OF INCREASING BRIGHTNESS WITH RESPECT TO INCREASING THICKNESS OF DEPOSIT, SAID SOLUTION CONSISTING ESSENTIALLY OF A COMPOSITION FROM THE CLASS CONSITING OF AQUEOUS SOLUTIONS OF NICKEL SULFATE AND AQUEOUS SOLUTIONS OF NICKEL SULFATE AND NICKEL CHLORIDE AND SAID ADDITION AGENT BEING AT LEAST ONE BIS-PYRIDINIUM COMPOUND OF THE FORMULA
References Cited (Backward Citations)
US2513280A
Cited
US2550449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |