US3978803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container or can and a method for manufacturing the same
Assignee: Nippon Steel Corp
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Filing: 1974-07-15
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Granted: 1976-09-07
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Expires: 1994-07-15
Abstract
Abstract A steel sheet having a Ni or Cu base plating layer and a Sn upper plating layer characterized by the absence of any alloy layer intervening therebetween is subjected to an ironing operation with the thickness of the plating being relatively small. The internal surface of the can thus formed is provided with an organic coating for packing foodstuffs including effervescent beverages.
Inventors
- 👤 Hidejiro Asano
- 👤 Yashichi Oyagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:58
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B05D7/22; B05D7/227; B65; B65D; B65D25/00; B65D25/14; B05D2350/00; B05D2350/60; B05D2350/65; Y; Y10; Y10S; Y10S220/00; Y10S220/917; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12708; Y10T428/12715; Y10T428/12722
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
A method for making a container or can which comprises the steps of: providing a steel sheet; applying a base plating of one of Ni or Cu on said steel sheet to the thickness of substantially 0.005 μ to 1.0 μ; electrically plating a coating of Sn over said base plating to a thickness of substantially 0.1 μ to 2.0 μ without effecting reflow of the Sn and thereby providing for the absence of any alloy layer between said two platings; subjecting said steel sheet to drawing and ironing operations to form a cup-like product; and applying an internal coating of an organic material to said cup-like product.
Claim 2
Independent Claim
108 words
A method for making a container or can which comprises the steps of: providing a steel sheet; applying a base plating of one of Ni or Cu on said steel sheet to the thickness of substantially 0.005 μ to 1.0 μ; electrically plating a coating of Sn over said base plating to a thickness of substantially 0.1 μ to 2.0 μ without effecting reflow of the Sn and thereby providing for the absence of any alloy layer between said two platings; subjecting said steel sheet to drawing and ironing operations to form a cup-like product; and applying an internal coating of an organic material to said cup-like product.
Claim 3
Dependent Claim
34 words
A method according to claim 1 in which the base plating is applied by one of a gas reduction process, an electric plating process or a chemical process, and optionally with a diffusion treatment.
References Cited (Backward Citations)
US3077421A
Cited
US3360157A
Cited
US3498823A
Cited
US3760751A
Cited
US3815535A
Cited
US3820368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |