Patent US3706638A successfully refreshed from Google Patents.
US3706638A
Expired / Lapsed
US
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Chromium plating bath for rotary receptacle plating
Assignee: EIDP Inc
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Filing: 1971-02-19
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Granted: 1972-12-19
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Expires: 1991-02-19
Abstract
Abstract DESIRABLE ELECTRODEPOSITIONOF BRIGHT CHROMIUM PLATE CAN BE MADE ON A SUBSTRATE CONTAINED IN A ROTARY RECEPTACLE IMMERSED IN A CHROMIC PLATING MEDIUM. THE MEDIUM CONTAINS A COMPLEX, WATER SOLUBLE CHROMIC COMPOUND FOR PLATING, WHICH COMPOUND CONTAINS CARBOXYLIC ACID CONSTITUENTS AND HALOGEN CONSTITUENTS. THE PLATE OBTAINED ON THE SUBSTRATE WITHIN THE ROTARY RECEPTACLE SHOWS DESIRABLE, UNIFORM CHROMIUM COVERAGE OVER AN EXTENSIVE BRIGHT RANGE.
Inventors
- 👤 John Edwin Bride
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:49
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04; C25D3/06
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |