Patent US2676461A successfully refreshed from Google Patents.
US3467584A
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Plating platinum metals on chromium
Assignee: ERNEST H LYONS JR
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Filing: 1966-10-24
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Granted: 1969-09-16
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Expires: 1986-10-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest H Lyons Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:10
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/50; C25D5/00; C25D5/34; C25D5/38; C25D5/40; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847; Y10T428/12861; Y10T428/12875
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
76 words
A PROCESS FOR PLATING A CHROMIUM SURFACE TO PROVIDE A CORROSION-RESISTANT ADHERENT PRECIOUS METAL COATING, COMPRISING THE STEPS OF (A) DEPASSIVATING SAID CHROMIUM SURFACE BY CATHODIZING IT IN AN ACID BATH, (B) RINSING THE DEPASSIVATED SURFACE WITH A WEAK ACID BATH, (C) PLATING ON SAID DEPASSIVATED SURFACE FROM AN AQUEOUS ACIDIFIED SOLUTION OF AN ALKALI IODIDE CONTAINING A SALT CHOSEN FROM THE GROUP CONSISTING OF PTI2, PDI2, PDCI2, RHCI3, RHI3 AND MIXTURES THEREOF WITH EACH OTHER.
Claim 2
Dependent Claim
76 words
A PROCESS FOR PLATING A CHROMIUM SURFACE TO PROVIDE A CORROSION-RESISTANT ADHERENT PRECIOUS METAL COATING, COMPRISING THE STEPS OF (A) DEPASSIVATING SAID CHROMIUM SURFACE BY CATHODIZING IT IN AN ACID BATH, (B) RINSING THE DEPASSIVATED SURFACE WITH A WEAK ACID BATH, (C) PLATING ON SAID DEPASSIVATED SURFACE FROM AN AQUEOUS ACIDIFIED SOLUTION OF AN ALKALI IODIDE CONTAINING A SALT CHOSEN FROM THE GROUP CONSISTING OF PTI2, PDI2, PDCI2, RHCI3, RHI3 AND MIXTURES THEREOF WITH EACH OTHER.
Claim 3
Dependent Claim
54 words
A PLATING BATH FOR PLATING PLATINUM ON CHROMIUM, COMPRISING AN AQUEOUS SOLUTION OF ABOUT 80 TO 90% SATURATION OF AN IODIDE CHOSEN FROM THE GROUP CONSISTING OF THE IODIDES OF LITHIUM, SODIUM, POTASSIUM, AMMONIUM, AND MAGNESIUM, 5-15 GRAMS PER LITER OF PTI2 DISSOLVED THEREIN, AND ACID TO OBTAIN A PH OF 2.5 TO 4.
Claim 4
Dependent Claim
54 words
A PLATING BATH FOR PLATING PLATINUM ON CHROMIUM, COMPRISING AN AQUEOUS SOLUTION OF ABOUT 80 TO 90% SATURATION OF AN IODIDE CHOSEN FROM THE GROUP CONSISTING OF THE IODIDES OF LITHIUM, SODIUM, POTASSIUM, AMMONIUM, AND MAGNESIUM, 5-15 GRAMS PER LITER OF PTI2 DISSOLVED THEREIN, AND ACID TO OBTAIN A PH OF 2.5 TO 4.
Claim 5
Dependent Claim
56 words
A PLATING BATH FOR PLATING PALLADIUM ON CHROMIUM, COMPRISING AN AQUEOUS SOLUTION OF ABOUT 80% TO 90% SATURATION OF AN IODIDE CHOSEN FROM THE GROUP CONSISTING OF THE IODIDES TO LITHIUM, SODIUM, POTASSIUM, AMMOMIUM, AND MAGNESIUM, 5-15 GRAMS PER LITER OF PDI2 OR PDCI2 DISSOLVED THEREIN, AND ACID TO OBTAIN A PH OF 2.5 TO 4.
Claim 6
Dependent Claim
56 words
A PLATING BATH FOR PLATING PALLADIUM ON CHROMIUM, COMPRISING AN AQUEOUS SOLUTION OF ABOUT 80% TO 90% SATURATION OF AN IODIDE CHOSEN FROM THE GROUP CONSISTING OF THE IODIDES TO LITHIUM, SODIUM, POTASSIUM, AMMOMIUM, AND MAGNESIUM, 5-15 GRAMS PER LITER OF PDI2 OR PDCI2 DISSOLVED THEREIN, AND ACID TO OBTAIN A PH OF 2.5 TO 4.
Claim 7
Dependent Claim
56 words
A PLATING BATH FOR PLATING RHODIUM ON CHROMIUM, COMPRISING AN AQUEOUS SOLUTION OF ABOUT 80% TO 90% SATURATION OF AN IODIDE CHOSEN FROM THE GROUP CONSISTING OF THE IODIDES OF LITHIUM, SODIUM, POTASSIUM, AMMONIUM, AND MAGNESIUM, 5-15 GRAMS PER LITER OF TRIVALENT RHODIUM HALIDE DISSOLVED THEREIN, AND ACID TO BRING THE PH TO 2.5 TO 4.
Claim 8
Dependent Claim
56 words
A PLATING BATH FOR PLATING RHODIUM ON CHROMIUM, COMPRISING AN AQUEOUS SOLUTION OF ABOUT 80% TO 90% SATURATION OF AN IODIDE CHOSEN FROM THE GROUP CONSISTING OF THE IODIDES OF LITHIUM, SODIUM, POTASSIUM, AMMONIUM, AND MAGNESIUM, 5-15 GRAMS PER LITER OF TRIVALENT RHODIUM HALIDE DISSOLVED THEREIN, AND ACID TO BRING THE PH TO 2.5 TO 4.
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |