US2847371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium plating on aluminum
Assignee: Tiarco Corp
•
Filing: 1955-06-28
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Granted: 1958-08-12
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Expires: 1975-06-28
Abstract
No abstract record available.
Inventors
- 👤 Paul J Topelian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/42; C25D5/44; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12743
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS OF ELECTROPLATING AN ALUMINUM ARTICLE WITH CHROMIUM COMPRISING IMMERSING THE ARTICLE IN AN AQUEOUS SOLUTION CONTAINING CHROMIC ACID, HYDROCHLORIC ACID AND CHROMIC CHLORIDE, THE INGREDIENTS BEING PRESENT BY CONVENTIONAL MEANS TO THE UPPER END OF THE CONDUCTOR IN THE APPROXIMATE PROPORTIONS OF THREE (3) POUNDS OF CHROMIC ACID, FIVE (5) GALLONS OF HYDROCHLORIC ACID HAVING A CONCENTRATION OF ABOUT 20* BE''. AND TEN (10) TO TWENTY (20) OUNCES OF CHROMIC CHLORIDE, REMOVING THE ARTICLE FROM THE SOLUTION AFTER GASSING OCCURS, AND ELECTROPLATING WITH CHROMIUM.
Claim 2
Dependent Claim
86 words
A PROCESS OF ELECTROPLATING AN ALUMINUM ARTICLE WITH CHROMIUM COMPRISING IMMERSING THE ARTICLE IN AN AQUEOUS SOLUTION CONTAINING CHROMIC ACID, HYDROCHLORIC ACID AND CHROMIC CHLORIDE, THE INGREDIENTS BEING PRESENT BY CONVENTIONAL MEANS TO THE UPPER END OF THE CONDUCTOR IN THE APPROXIMATE PROPORTIONS OF THREE (3) POUNDS OF CHROMIC ACID, FIVE (5) GALLONS OF HYDROCHLORIC ACID HAVING A CONCENTRATION OF ABOUT 20* BE''. AND TEN (10) TO TWENTY (20) OUNCES OF CHROMIC CHLORIDE, REMOVING THE ARTICLE FROM THE SOLUTION AFTER GASSING OCCURS, AND ELECTROPLATING WITH CHROMIUM.
References Cited (Backward Citations)
US1789523A
Cited
US1838777A
Cited
US1797357A
Cited
US1988645A
Cited
US2091386A
Cited
US2227469A
Cited
US2302939A
Cited
US2311623A
Cited
US2357219A
Cited
US2428749A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |