Patent US3730853A successfully refreshed from Google Patents.
US3730853A
Expired / Lapsed
US
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Electroplating bath for depositing tin-lead alloy plates
Assignee: SCHLOETTER M
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Filing: 1971-06-18
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Granted: 1973-05-01
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Expires: 1991-06-18
Abstract
Abstract SEMIBRIGHT TO BRIGHT DEPOSITS OF TINC-LEAD ALLOYS ON ARTICLES ARE PRODUCED BY ELECTROPLATING THE ARTICLES WITH AN ELECTROPLATING BATH COMPRISING A THIN COMPOUND, A LEAD COMPOUND, PREFERABLY THE FLUOBORATES OF STANNOUS TIN AND PLUMBOUS LEAD, FLUOBORIC ACID, BORIC ACID, A WETTING AGENT, AND, AS BRIGHTENING AGENT, A METHYLENE ANILINE COMPOUND OR A DIAMINO DIPHENYLMETHANE COMPOUND, PREFERABLY IN COMBINATION WITH A BRIGHTENER AS CONVENTIONALLY USED IN ELECTROPLATING TIN BATHS.
Inventors
- 👤 F Sedlacek
- 👤 J Korpiun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:54
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |