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US3654101A
Expired / Lapsed
US
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Novel chromium plating compositions and processes
Assignee: M&T Chemicals Inc
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Filing: 1970-01-09
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Granted: 1972-04-04
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Expires: 1990-01-09
Abstract
Abstract IN ACCORDANCE WITH CERTAIN OF ITS ASPECTS, THIS INVENTION RELATES TO NOVEL COMPOSITIONS AND TO A PROCESS FOR ELECTROPLATING CHROMIUM PLATE ONTO A BASIS METAL WHICH COMPRISES PASSING CURRENT FROM AN ANODE TO A CATHODE AT LEAST A PORTION OF WHICH CONTAINS A CONDUCTIVE METAL LAYER THROUGH AN AQUEOUS ACIDIC CHROMIUM PLATING BATH COMPOSITION CONTAINING (1) AT LEAST ONE CHROMIUM COMPOUND PROVIDING HEXAVALENT CHROMIUM IONS FOR ELECTROPLATING CHROMIUM; AND (2) BROMATE ION AS COOPERATING ADDITIVE TO PROVIDE INCREASED CHROMIUM THROWING POWER; FOR A TIME SUFFICIENT TO DEPOSIT A CHROMIUM ELECTROPLATE HAVING A THICKNESS OF AT LEAST 1X10**-5 MM.
Inventors
- 👤 Fred Aoun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:37
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |