US3054737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and bath for electrosmoothing ferrous metals
Assignee: British Iron and Steel Research Association BISRA
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Filing: 1959-07-31
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Granted: 1962-09-18
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Expires: 1979-07-31
Abstract
No abstract record available.
Inventors
- 👤 Salt Frederick William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:59
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/36; C25F; C25F3/00; C25F3/16; C25F3/22; C25F3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS OF PREPARING LOW CARBON STEEL FOR ELECTROPLATING WITH ANOTHER METAL, WHICH COMPRISES ANODICALLY ELECTROSMOOTHING THE SURFACE TO BE PLATED IN A BATH CONSISTING ESSENTIALLY OF WATER AND FROM 49 TO 147 GMS. SODIUM CITRATE (INCLUDING 2 MOLS. WATER OF CRYSTALLISATION) PER LITRE, FROM 2 TO 50 GMS, CITRIC ACID PER LITRE, AND FROM 5 TO 20 GMS. SODIUM CHLORIDE PER LITRE, THE RELATIVE PROPORTIONS OF SODIUM CITRATE AND CITRIC ACID BEING SUCH THAT THE BATH HAS A PH OF FROM 4.0 TO 6.0.
Claim 2
Dependent Claim
85 words
A PROCESS OF PREPARING LOW CARBON STEEL FOR ELECTROPLATING WITH ANOTHER METAL, WHICH COMPRISES ANODICALLY ELECTROSMOOTHING THE SURFACE TO BE PLATED IN A BATH CONSISTING ESSENTIALLY OF WATER AND FROM 49 TO 147 GMS. SODIUM CITRATE (INCLUDING 2 MOLS. WATER OF CRYSTALLISATION) PER LITRE, FROM 2 TO 50 GMS, CITRIC ACID PER LITRE, AND FROM 5 TO 20 GMS. SODIUM CHLORIDE PER LITRE, THE RELATIVE PROPORTIONS OF SODIUM CITRATE AND CITRIC ACID BEING SUCH THAT THE BATH HAS A PH OF FROM 4.0 TO 6.0.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |