US2778787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of iron zinc alloys
Assignee: British Iron and Steel Research Association BISRA
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Filing: 1954-03-15
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Granted: 1957-01-22
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Salt Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:49
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/565; C25D3/562
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A METHOD FOR THE ELECTRODEPOSITION OF IRON-ZINC ALLOYS IN WHICH THE BATH CONTAINS A SOURCE OF IRON AND ZINC IONS, AN AMMONIUM SALT, AN ALIPHATIC HYDROXY-ACID SUPPLYING A CHELATE GROUP TO THE FERRIC ION AND AN ALKALI METAL CHORIDE DIFFERENT FROM SAID AMMONIUM SALT IN PROPORTIONS SUFFICIENT RESPECTIVELY TO PREVENT DECREASING ACIDITY AT THE CATHODE, TO PREVENT SUBSTANTIAL PRECIPITATION OF FERRIC HYDROXIDE FROM THE BATH AND TO PREVENT THE ANODE BECOMING PASSIVE.
Claim 2
Independent Claim
72 words
A METHOD FOR THE ELECTRODEPOSITION OF IRON-ZINC ALLOYS IN WHICH THE BATH CONTAINS A SOURCE OF IRON AND ZINC IONS, AN AMMONIUM SALT, AN ALIPHATIC HYDROXY-ACID SUPPLYING A CHELATE GROUP TO THE FERRIC ION AND AN ALKALI METAL CHORIDE DIFFERENT FROM SAID AMMONIUM SALT IN PROPORTIONS SUFFICIENT RESPECTIVELY TO PREVENT DECREASING ACIDITY AT THE CATHODE, TO PREVENT SUBSTANTIAL PRECIPITATION OF FERRIC HYDROXIDE FROM THE BATH AND TO PREVENT THE ANODE BECOMING PASSIVE.
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) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |