US2633450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tin and tin alloy plating bath
Assignee: United States Steel Corp
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Filing: 1949-05-27
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Granted: 1953-03-31
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Expires: 1969-05-27
Abstract
No abstract record available.
Inventors
- 👤 John W Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:17
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/30; C25D3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A BATH FOR THE ELECTRODEPOSITION OF TIN COMPRISING AN AQUEOUS ACID SOLUTION OF TIN, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF HYDROFLUOBORIC ACID, PHENOLSULPHONIC ACID, SULPHURIC ACID, AND MIXTURES OF THE LAST TWO NAMED ACIDS, AND, AS AN ADDITION AGENT, AN EFFECTIVE AMOUNT OF A MIXTURE CONSISTING OF 60 TO 85% BY WEIGHT 4-4'' DIHYDROXY DIPHENYL SULPHONE AND 40 TO 15% 2-4'' DIHYDROXY DIPHENYL SULPHONE; SAID EFFECTIVE AMOUNT BEING BETWEEN 50 AND 100% OF SAID MIXTURE''S MAXIMUM SOLUBILITY IN SAID BATH.
Claim 2
Dependent Claim
83 words
A BATH FOR THE ELECTRODEPOSITION OF TIN COMPRISING AN AQUEOUS ACID SOLUTION OF TIN, SAID ACID BEING SELECTED FROM THE GROUP CONSISTING OF HYDROFLUOBORIC ACID, PHENOLSULPHONIC ACID, SULPHURIC ACID, AND MIXTURES OF THE LAST TWO NAMED ACIDS, AND, AS AN ADDITION AGENT, AN EFFECTIVE AMOUNT OF A MIXTURE CONSISTING OF 60 TO 85% BY WEIGHT 4-4'' DIHYDROXY DIPHENYL SULPHONE AND 40 TO 15% 2-4'' DIHYDROXY DIPHENYL SULPHONE; SAID EFFECTIVE AMOUNT BEING BETWEEN 50 AND 100% OF SAID MIXTURE''S MAXIMUM SOLUBILITY IN SAID BATH.
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) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |