US3220940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of nickel
Assignee: Udylite Research Corp
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Filing: 1962-02-07
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Granted: 1965-11-30
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Expires: 1982-02-07
Abstract
No abstract record available.
Inventors
- 👤 Brown Henry
- 👤 Donald H Becking
- 👤 Richard M Stevenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:08
CPC Classifications
C; C07; C07D; C07D275/00; C07D275/04; C07D275/06; C25; C25D; C25D3/00; C25D3/02; C25D3/12; C25D3/14; C25D3/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
67 words
A METHOD FOR ELECTRODEPOSITING FINE-GRAINED NICKEL COMPRISING THE STEP OF ELECTRODEPOSITING NICKEL FROM AN AQUEOUS ACIDIC SOLUTION OF AT LEAST ONE NICKEL SALT SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE, NICKEL CHLORIDE, NICKEL FLUOBORATE, AND NICKEL SULFAMATE, AND CONTAINING DISSOLVED IN SAID NICKEL PLATING SOLUTION IN A CONCENTRATION OF ABOUT 0.05 GRAM PER LITER TO SATURATION, AN ORGANIC SULFONIC ACID COMPOUND IN ACCORDANCE WITH THE FORMULA
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |