US2784152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of nickel
Assignee: Harshaw Chemical Co
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Filing: 1953-07-22
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Granted: 1957-03-05
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Expires: 1973-07-22
Abstract
No abstract record available.
Inventors
- 👤 David G Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:30
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
A METHOD OF ELECTRODEPOSITING NICKEL IN THE FORM OF A DEPOSIT WHICH IS BRIGHT AS TAKEN FROM THE PLATING SOLUTION WITHOUT FURTHER TREATMENT, WHICH METHOD COMPRISES ELECTROLYZING AN AQUEOUS ACID SOLUTION OF A NICKEL ELECTROLYTE OF THE CLASS CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, AND MIXTURES OF NICKEL SULFATE WITH NICKEL CHLORIDE, SAID SOLUTION ALSO CONTAINING COOPERATING ADDITION AGENTS CAPABLE OF IMPARTING BRIGHTNESS TO THE DEPOSIT, ONE OF SAID ADDITION AGENTS BEING A COMPOUND OF THE FORM ARSO2-, WHERE AR REPRESENTS AN AROMATIC RADICAL CONTAINING NOT LESS THAN 6 NOR MORE THAN 10 CARBON ATOMS IN THE AROMATIC NUCLEUS, SUCH COMPOUND BEING DISSOLVED IN SAID SOLUTION TO THE EXTENT OF AT LEAST 0.2 GRAM PER LITER AND THE OTHER OF SAID AGENTS BEING A COMPOUND OF THE FORM R(CH2CH2O)NH, WHERE N IS AN INTEGER FROM 10 TO 100 AND R IS A RADICAL SELECTED FROM THE CLASS CONSISTING OF RADICALS OF THE FORM R''O AND R''NH WHERE R'' IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, ALKYL RADICALS HAVING FROM 1 TO 20 CARBON ATOMS, AND ARYL RADICALS HAVING FROM 1 TO 20 CARBON ATOMS, SAID LAST MENTIONED ADDITION AGENT BEING DISSOLVED IN SAID SOLUTION TO THE EXTENT OF FROM 0.001 TO 0.05 GRAM PER LITER.
Claim 2
Independent Claim
206 words
A METHOD OF ELECTRODEPOSITING NICKEL IN THE FORM OF A DEPOSIT WHICH IS BRIGHT AS TAKEN FROM THE PLATING SOLUTION WITHOUT FURTHER TREATMENT, WHICH METHOD COMPRISES ELECTROLYZING AN AQUEOUS ACID SOLUTION OF A NICKEL ELECTROLYTE OF THE CLASS CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, AND MIXTURES OF NICKEL SULFATE WITH NICKEL CHLORIDE, SAID SOLUTION ALSO CONTAINING COOPERATING ADDITION AGENTS CAPABLE OF IMPARTING BRIGHTNESS TO THE DEPOSIT, ONE OF SAID ADDITION AGENTS BEING A COMPOUND OF THE FORM ARSO2-, WHERE AR REPRESENTS AN AROMATIC RADICAL CONTAINING NOT LESS THAN 6 NOR MORE THAN 10 CARBON ATOMS IN THE AROMATIC NUCLEUS, SUCH COMPOUND BEING DISSOLVED IN SAID SOLUTION TO THE EXTENT OF AT LEAST 0.2 GRAM PER LITER AND THE OTHER OF SAID AGENTS BEING A COMPOUND OF THE FORM R(CH2CH2O)NH, WHERE N IS AN INTEGER FROM 10 TO 100 AND R IS A RADICAL SELECTED FROM THE CLASS CONSISTING OF RADICALS OF THE FORM R''O AND R''NH WHERE R'' IS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, ALKYL RADICALS HAVING FROM 1 TO 20 CARBON ATOMS, AND ARYL RADICALS HAVING FROM 1 TO 20 CARBON ATOMS, SAID LAST MENTIONED ADDITION AGENT BEING DISSOLVED IN SAID SOLUTION TO THE EXTENT OF FROM 0.001 TO 0.05 GRAM PER LITER.
References Cited (Backward Citations)
US2524619A
Cited
US2686757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-04 | 1960-09-03 | 1961-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-04 | 1964-09-03 | 1965-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-04 | 1968-09-03 | 1969-03-05 | $7700.00 | Window Closed / Lapsed |