US3093556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-depositing stainless steel coatings on metal surfaces
Assignee: Amchem SA
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Filing: 1961-06-13
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Granted: 1963-06-11
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Expires: 1981-06-13
Abstract
No abstract record available.
Inventors
- 👤 Machu Willibald
- 👤 Ghandour Mohamed Fathi Mahm El
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:43
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/562; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12778; Y10T428/12861; Y10T428/12951; Y10T428/12972; Y10T428/12979
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
THE METHOD OF ELECTRO-DEPOSITING A STAINLESS STEEL ALLOY COATING CONSISTING OF CHROMIUM, NICKEL AND IRON ON A METAL SURFACE, WITH CHROMIUM CONSTITUTING FROM ABOUT 8.2% TO ABOUT 27.1% OF THE DEPOSIT, NICKEL FROM ABOUT 3.6% TO ABOUT 33% AND IRON THE BALANCE, THE IRON CONTENT BEING PERDOMINANTLY GREATER THAN EITHER CHROMIUM OR NICKEL AND AT LEAST 58.5%; SAID METHOD COMPRISING USING THE METAL TO BE COATED AS CATHODE IN A PLATING BATH CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF FROM 0.2 MOL/LITER TO SATURATION OF THE SULFATE SALT OF EACH OF THE METALS IN THE ALLOY TO BE DEPOSITED AND FROM 1 TO 4 MOLS/LITER OF UREA WITH THE BALANCE WATER; MAINTAINING THE TEMPERATURE OF THEBATH AT FROM 30*C. TO 80*C., THE PH AT FROM 1.5 TO 3.5, AND PASSING AN ELECTRIC CURRENT OF FROM 0.645 TO 2.148 AM;S./IN.2 THERETHROUGH BETWEEN AN ANODE AND THE SAID CATHODE.
Claim 2
Independent Claim
147 words
THE METHOD OF ELECTRO-DEPOSITING A STAINLESS STEEL ALLOY COATING CONSISTING OF CHROMIUM, NICKEL AND IRON ON A METAL SURFACE, WITH CHROMIUM CONSTITUTING FROM ABOUT 8.2% TO ABOUT 27.1% OF THE DEPOSIT, NICKEL FROM ABOUT 3.6% TO ABOUT 33% AND IRON THE BALANCE, THE IRON CONTENT BEING PERDOMINANTLY GREATER THAN EITHER CHROMIUM OR NICKEL AND AT LEAST 58.5%; SAID METHOD COMPRISING USING THE METAL TO BE COATED AS CATHODE IN A PLATING BATH CONSISTING ESSENTIALLY OF AN AQUEOUS SOLUTION OF FROM 0.2 MOL/LITER TO SATURATION OF THE SULFATE SALT OF EACH OF THE METALS IN THE ALLOY TO BE DEPOSITED AND FROM 1 TO 4 MOLS/LITER OF UREA WITH THE BALANCE WATER; MAINTAINING THE TEMPERATURE OF THEBATH AT FROM 30*C. TO 80*C., THE PH AT FROM 1.5 TO 3.5, AND PASSING AN ELECTRIC CURRENT OF FROM 0.645 TO 2.148 AM;S./IN.2 THERETHROUGH BETWEEN AN ANODE AND THE SAID CATHODE.
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) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |