Patent US2940867A successfully refreshed from Google Patents.
US2940867A
Expired / Lapsed
US
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Immersion tin plating and composition therefore
Assignee: EIDP Inc
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Filing: 1958-12-24
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Granted: 1960-06-14
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Expires: 1978-12-24
Abstract
No abstract record available.
Inventors
- 👤 Michael A Streicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:06
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
IN A PROCESS FOR DEPOSITING TIN ON A SELECTED AREA OF A STEEL SHEET THE STEPS COMPRISING MECHANICALLY ROUGHENING SUCH AREA AND APPLYING THERETO AN AQUEOUS BATH CONSISTING ESSENTIALLY OF THE FOLLOWING PROPORTIONS OF: G./1. STANNOUS SULFATE -------------------------- 10-40 SODIUM BISULFATE ------------------------- 100-250 UNSUBSTITUTED POLYETHYLENE OXIDE HAVING A MOLECULAR WEIGHT OF ABOUT 6000 ---------- 30-100 WATER, SUFFICIENT TO MAKE 1 LITER TOTAL.
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |