US3062725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making tin plate
Assignee: United States Steel Corp
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Filing: 1960-08-05
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Granted: 1962-11-06
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Expires: 1980-08-05
Abstract
No abstract record available.
Inventors
- 👤 Robert P Frankenthal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/48; C25D5/50; C25D7/00; C25D7/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
IN A METHOD OF MAKING TIN PLATE, THE STEPS COMPRISING ELECTROLYTICALLY DEPOSITING A COATING OF TIN ON LOWCARBON STEEL STRIP OF TIN-PLATE GAGE, THEN, IN THE ABSENCE OF PREHEATING WHICH WOULD TEND TO INITIATE THE FORMATION OF IRON-TIN ALLOY AT THE SURFACE OF CONTACT BETWEEN THE TIN COATING AND THE STEEL BASE, HEATING THE STRIP AT A RATE OF FROM 700 TO 1200*F. PER SECOND TO IMPART TO IT A TEMPERATURE BETWEEN THE MELTING POINT OF TIN AND 475*F., THEREAFTER SUPPLEMENTALLY HEATING THE STRIP TO HOLD IT SUBSTANTIALLY AT SAID TEMPERATURE FOR FROM 1 TO 3 SECONDS AND THEN QUICKLY COOLING THE STRIP TO A TEMPERATURE OF ABOUT 200*F., WHEREBY SUBSTANTIALLY ALL THE IRON-TIN ALLOY RESULTING IS FORMED AT A TEMPERATURE ABOVE SAID MELTING POINT AND AN INCREASED CORROSION RESISTANCE IS IMPARTED TO THE TIN COATING.
Claim 2
Dependent Claim
136 words
IN A METHOD OF MAKING TIN PLATE, THE STEPS COMPRISING ELECTROLYTICALLY DEPOSITING A COATING OF TIN ON LOWCARBON STEEL STRIP OF TIN-PLATE GAGE, THEN, IN THE ABSENCE OF PREHEATING WHICH WOULD TEND TO INITIATE THE FORMATION OF IRON-TIN ALLOY AT THE SURFACE OF CONTACT BETWEEN THE TIN COATING AND THE STEEL BASE, HEATING THE STRIP AT A RATE OF FROM 700 TO 1200*F. PER SECOND TO IMPART TO IT A TEMPERATURE BETWEEN THE MELTING POINT OF TIN AND 475*F., THEREAFTER SUPPLEMENTALLY HEATING THE STRIP TO HOLD IT SUBSTANTIALLY AT SAID TEMPERATURE FOR FROM 1 TO 3 SECONDS AND THEN QUICKLY COOLING THE STRIP TO A TEMPERATURE OF ABOUT 200*F., WHEREBY SUBSTANTIALLY ALL THE IRON-TIN ALLOY RESULTING IS FORMED AT A TEMPERATURE ABOVE SAID MELTING POINT AND AN INCREASED CORROSION RESISTANCE IS IMPARTED TO THE TIN COATING.
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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |