US3785939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin/lead plating bath and method
Assignee: Conversion Chemical Corp
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Filing: 1970-10-22
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Granted: 1974-01-15
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Expires: 1990-10-22
Abstract
Abstract A PLATING BATH FOR ELECTRODEPOSITION OF TIN/LEAD ALLOYS CONTAINS STANNOUS ION, LEAD ION, A FLUOBORATE, FLUOSILICATE OR SULFAMATE RADICAL AND, AS A BRIGHTENER SYSTEM, A NON IONIC POLYOXALKYLATED SURFACTANT, A LOWER ALIPHATIC ALDEHYDE, AN ALIPHATIC OR AROMATIC AMINE AND AN AROMATIC ALDEHYDE, THE PH OF THE BATH BEING LESS THAN ABOUT 3.0.
Inventors
- 👤 G Hsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:26
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/30; C25D3/32; C25D3/34; C25D3/36; 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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |