US2716596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Determination of tin on tinplate
Assignee: National Steel Corp
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Filing: 1952-01-18
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Granted: 1955-08-30
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Expires: 1972-01-18
Abstract
No abstract record available.
Inventors
- 👤 Delbert P Robertson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:42
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/423; G01N31/00; G01N31/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF DETERMINING THE AMOUNT OF TIN ON A SAMPLE OF TINPLATE HAVING A FERROUS METAL BASE COMPRISING THE STEPS OF ARRANGING THE SAMPLE AS AN ANODE IN A BATH OF AN ELECTROLYTIC CELL, THE REACTIVE CONSISTUENT OF THE BATH CONSISTING ESSENTIALLY OF AQUEOUS HYROCHLORIC ACID, PASSING AN ELECTRIC CURRENT THROUGH THE SAMPLE AND THE BATH THEREBY ELECTROLYTICALLY CONVERTING THE TIN TO STANNOUS IONS, SIMULTANEOUSLY BUDDLING AN INERT GAS THROUGH THE BATH THEREBY PREVENTING OXIDATION OF STANNOUS IONS, AND THEREAFTER TITRATING THE STANNOUS CHLORIDECONTAINING BATH SOLUTION WITH IODINE TO DETERMINE THE AMOUNT OF TIN ON THE SAMPLE.
Claim 2
Independent Claim
98 words
THE METHOD OF DETERMINING THE AMOUNT OF TIN ON A SAMPLE OF TINPLATE HAVING A FERROUS METAL BASE COMPRISING THE STEPS OF ARRANGING THE SAMPLE AS AN ANODE IN A BATH OF AN ELECTROLYTIC CELL, THE REACTIVE CONSISTUENT OF THE BATH CONSISTING ESSENTIALLY OF AQUEOUS HYROCHLORIC ACID, PASSING AN ELECTRIC CURRENT THROUGH THE SAMPLE AND THE BATH THEREBY ELECTROLYTICALLY CONVERTING THE TIN TO STANNOUS IONS, SIMULTANEOUSLY BUDDLING AN INERT GAS THROUGH THE BATH THEREBY PREVENTING OXIDATION OF STANNOUS IONS, AND THEREAFTER TITRATING THE STANNOUS CHLORIDECONTAINING BATH SOLUTION WITH IODINE TO DETERMINE THE AMOUNT OF TIN ON THE SAMPLE.
References Cited (Backward Citations)
DE679931C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-29 | 1959-02-28 | 1959-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-29 | 1963-02-28 | 1963-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-29 | 1967-02-28 | 1967-08-30 | $7700.00 | Window Closed / Lapsed |