Patent US2962428A successfully refreshed from Google Patents.
US2962428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for chromium plating
Assignee: Primerica Inc
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Filing: 1959-01-15
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Granted: 1960-11-29
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Expires: 1979-01-15
Abstract
No abstract record available.
Inventors
- 👤 Passal Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:13
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
AN AQUEOUS BATH FOR CHROMIUM PLATING COMPRISING BETWEEN 50 AND 600 G./1. OF CHROMIC ACID AND AT LEAST ONE COMPLEX ION SELECTED FROM THE CLASS CONSISTING OF FLUOALUMINATE, FLUOTITANATE AND FLUOZIRCONATE IONS, THE RATIO OF CHROMIC ACID TO SAID COMPLEX ION BEING BETWEEN 50:1 TO 200:1
Claim 2
Dependent Claim
46 words
AN AQUEOUS BATH FOR CHROMIUM PLATING COMPRISING BETWEEN 50 AND 600 G./1. OF CHROMIC ACID AND AT LEAST ONE COMPLEX ION SELECTED FROM THE CLASS CONSISTING OF FLUOALUMINATE, FLUOTITANATE AND FLUOZIRCONATE IONS, THE RATIO OF CHROMIC ACID TO SAID COMPLEX ION BEING BETWEEN 50:1 TO 200:1
References Cited (Backward Citations)
US1815081A
Cited
US1928284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |