Patent US4125670A successfully refreshed from Google Patents.
US4125670A
Expired / Lapsed
US
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Thermosetting organic coated metallic sheet
Assignee: Bethlehem Steel Corp
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Filing: 1977-04-12
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Granted: 1978-11-14
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Expires: 1997-04-12
Abstract
Abstract Sheet metal having a partially cured organic thermosetting coating thereon and method of forming drawn and ironed seamless containers therefrom.
Inventors
- 👤 Guido A. Perfetti
- 👤 Henry Darlington
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:40
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/12; B05D7/00; B05D7/14; B05D7/16; B05D2701/00; B05D2701/10; B05D3/02; B05D3/0254; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31681; Y10T428/31685; Y10T428/31688; Y10T428/31692; Y10T428/31696; Y10T428/31699; Y10T428/31714; Y10T428/31786; Y10T428/31797; Y10T428/31801; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/3192; Y10T428/31928
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A coated sheet metal for use in manufacturing drawn and ironed seamless containers consisting essentially of a metallic substrate coated with a thermosetting organic coating which has been heated for a time to effect a partial cure in the range of between about 1 and about 75% MEK insoluble residue, which cure provides a bond between the coating and the metallic substrate and a coating with the ability to elongate with the metallic substrate without becoming detached from the metallic substrate in a drawing and ironing operation.
Claim 2
Dependent Claim
87 words
A coated sheet metal for use in manufacturing drawn and ironed seamless containers consisting essentially of a metallic substrate coated with a thermosetting organic coating which has been heated for a time to effect a partial cure in the range of between about 1 and about 75% MEK insoluble residue, which cure provides a bond between the coating and the metallic substrate and a coating with the ability to elongate with the metallic substrate without becoming detached from the metallic substrate in a drawing and ironing operation.
Claim 3
Dependent Claim
26 words
A sheet product according to claim 1 wherein the metallic substrate is selected from the group consisting of blackplate, electrolytic chromium-coated container steel, tinplate and aluminum.
Claim 4
Dependent Claim
16 words
A sheet product according to claim 1 wherein the thermosetting organic coating include an internal lubricant.
Claim 5
Dependent Claim
28 words
A sheet product according to claim 1 wherein the thermosetting organic coating is selected from the group consisting of epoxy phenolic, epoxy urea formaldehyde and a thermosetting vinyl.
Claim 6
Dependent Claim
13 words
A sheet product according to claim 4 wherein the metallic substrate is blackplate.
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) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |