US3594197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for immersion plating of aluminum or aluminum alloys with tin
Assignee: PITT METALS CO
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Filing: 1968-10-29
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Granted: 1971-07-20
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Expires: 1988-10-29
Abstract
Abstract A PROCESS FOR THE IMMERSION PLATING OF ALUMINUM AND ALUMINUM ALLOYS WITH TIN AND THE COMPOSITION OF THE BATH. THE PLATING BATH COMPRISES AN AQUEOUS MIXTURE OF AN ALKALI METAL STANNATE AND BORIC ACID, OR AN ALKALI METAL BORATE OR MIXTURES THEROF. THE BORIC ACID OR ALKALI METAL BORATE PREVENTS PRECIPITATION OF METASTANNIC ACID AND ALLOWS THE IMMERSION TIN PLATING BATH TO BE OPERATED UNDER UNUSUAL PH CONDITIONS. THE REACTION PRODUCTS STABILIZE THE BATH AND CAUSE THE BATH TO BE SELF-REGULATING. THE BORIC ACID OR ALKALI METAL BORATE FORMS A COMPLEX WITH THE ALKALI METAL STANNATES IN THE PLATING BATH.
Inventors
- 👤 Stanley Bunevich
- 👤 Richard E Horn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:57
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |