Patent US2552920A successfully refreshed from Google Patents.
US2552920A
Expired / Lapsed
US
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Electrolytic tin plating bath
Assignee: United States Steel Corp
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Filing: 1947-08-27
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Granted: 1951-05-15
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Expires: 1967-08-27
Abstract
No abstract record available.
Inventors
- 👤 William S Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:24
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/30; C25D3/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
AN ELECTROLYTIC TIN PLATING BATH CONSISTING ESSENTIALLY OF AN AQUEOUS ACID SOLUTION HAVING A MAXIMUM PH VALUE OF 2, OF 10 TO 80 GRAMS PER LITER OF TIN IN THE FORM OF A STANNOUS SALT OF AN ACID OF THE GROUP CONSISTING OF SULFURIC ACID, PHENOLSULFONIC ACID AND HYDROFLUOBORIC ACID AND 0.2 TO 7.0 GRAM PER LETER OF AN ADDITION AGENT WHICH IS A POLYMER OF A MONOMER OF THE GROUP CONSISTING OF: 2,24 TRIMETHYL-1,2 DIHYDROQUINOLINE, 2,2,4,8 TETRAMETHYL-1,2 DIHYDROQUINOLINE, 2,2,4,7 TETRAMETHYL-1,2 DIHYDROQUINOLINE, 2,2,4,6 TETRAMETHYL-1,2 KIHYDROQUINOLINE, 2 METHYL 2,4 DIETHYL-1,2 DIHYDROQUINOLINE, 2,8 DIMETHYL 2,4 DIETHYL-1,2 DIHYDROQUINOLINE, 2,7 DIMETHYL 2,4 DIETHYL-1,2 DIHYDROQUINOLINE, AND 2,6 DIMETHYL 2,4 DIETHYL-1-2 DIHYDROQUINOLINE.
Claim 2
Dependent Claim
106 words
AN ELECTROLYTIC TIN PLATING BATH CONSISTING ESSENTIALLY OF AN AQUEOUS ACID SOLUTION HAVING A MAXIMUM PH VALUE OF 2, OF 10 TO 80 GRAMS PER LITER OF TIN IN THE FORM OF A STANNOUS SALT OF AN ACID OF THE GROUP CONSISTING OF SULFURIC ACID, PHENOLSULFONIC ACID AND HYDROFLUOBORIC ACID AND 0.2 TO 7.0 GRAM PER LETER OF AN ADDITION AGENT WHICH IS A POLYMER OF A MONOMER OF THE GROUP CONSISTING OF: 2,24 TRIMETHYL-1,2 DIHYDROQUINOLINE, 2,2,4,8 TETRAMETHYL-1,2 DIHYDROQUINOLINE, 2,2,4,7 TETRAMETHYL-1,2 DIHYDROQUINOLINE, 2,2,4,6 TETRAMETHYL-1,2 KIHYDROQUINOLINE, 2 METHYL 2,4 DIETHYL-1,2 DIHYDROQUINOLINE, 2,8 DIMETHYL 2,4 DIETHYL-1,2 DIHYDROQUINOLINE, 2,7 DIMETHYL 2,4 DIETHYL-1,2 DIHYDROQUINOLINE, AND 2,6 DIMETHYL 2,4 DIETHYL-1-2 DIHYDROQUINOLINE.
References Cited (Backward Citations)
US1824100A
Cited
US2370986A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |