Patent US5935149A successfully refreshed from Google Patents.
Patent US2990343A successfully refreshed from Google Patents.
US2990343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium alloy plating
Assignee: Individual
•
Filing: 1955-02-11
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Granted: 1961-06-27
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Expires: 1975-02-11
Abstract
No abstract record available.
Inventors
- 👤 William H Safranek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:53
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE METHOD OF ELECTRODEPOSITING A CHROMIUM-ALLOY PLATE WHICH COMPRISES ELECTROLYZING AN AQUEOUS BATH CONSISTING OF A CHROMIUM SALT PROVIDING FROM 20 TO 75 GRAMS PER LITER OF TRIVALENT CHROMIUM IONS, AN ALKALI METAL SALT PROVIDING FROM 10 TO 150 GRAMS PER LITER OF ALKALI METAL IONS, AND A SALT OF AT LEAST ONE ALLOYING METAL PROVIDING ALLOYING METAL IONS OF THE GROUP CONSISTING OF FROM .6 TO 2.5 GRAMS PER LITER OF IRON IONS, .1 TO 1.0 GRAM PER LITER OF NICKEL IONS, AND .1 TO 1.0 GRAM PER LITER OF COBALT IONS.
Claim 2
Independent Claim
93 words
THE METHOD OF ELECTRODEPOSITING A CHROMIUM-ALLOY PLATE WHICH COMPRISES ELECTROLYZING AN AQUEOUS BATH CONSISTING OF A CHROMIUM SALT PROVIDING FROM 20 TO 75 GRAMS PER LITER OF TRIVALENT CHROMIUM IONS, AN ALKALI METAL SALT PROVIDING FROM 10 TO 150 GRAMS PER LITER OF ALKALI METAL IONS, AND A SALT OF AT LEAST ONE ALLOYING METAL PROVIDING ALLOYING METAL IONS OF THE GROUP CONSISTING OF FROM .6 TO 2.5 GRAMS PER LITER OF IRON IONS, .1 TO 1.0 GRAM PER LITER OF NICKEL IONS, AND .1 TO 1.0 GRAM PER LITER OF COBALT IONS.
References Cited (Backward Citations)
US2693444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-26 | 1964-12-26 | 1965-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-26 | 1968-12-26 | 1969-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-26 | 1972-12-26 | 1973-06-27 | $7700.00 | Window Closed / Lapsed |