US2822326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bright chromium alloy plating
Assignee: Rockwell Spring and Axle Co
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Filing: 1955-03-22
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Granted: 1958-02-04
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Expires: 1975-03-22
Abstract
No abstract record available.
Inventors
- 👤 William H Safranek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:48
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
87 words
THE METHOD OF ELECTRODEPOSITING A BRIGHT CHROMIUMALLOY PLATE, WHICH COMPRISES ELECTROLYZING AN AQUEOUS BATH CONTAINING 30 TO 75 G./L. OF TRIVALENT CHROMIUM IONS, 10 TO 50 G./L. OF ALKALI METAL IONS, THE IONS OF AT LEAST ONE ALLOYING METAL SELECTED FROM THE GROUP CONSISTING OF FROM 0.6 TO 2.5 G./L. OF IRON IONS, FROM 0.1 TO 1.0 G./L. OF NICKEL IONS, FROM 0.1 TO 1.0 G./L. OF COBALT IONS, AND CONTAINING ADDITIONALLY AT LEAST ONE BRIGHTENING AGENT IN THE RANGE SPECIFIED, SELECTED FROM THE GROUP CONSISTING OF:
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |