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US4450209A
Expired / Lapsed
US
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Multi-layer surface-treated steel plate having zinc-containing layer
Assignee: JFE Engineering Corp
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Filing: 1982-12-07
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Granted: 1984-05-22
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Expires: 2002-12-07
Abstract
Abstract A multi-layer surface-treated steel plate comprises a zinc-containing plated layer, a lithium silicate film layer formed on said plated layer and an organic composite silicate film layer composed of colloidal silica and an organic resin, which is formed on the lithium silicate film layer.
Inventors
- 👤 Tomihiro Hara
- 👤 Masahiro Ogawa
- 👤 Masaaki Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:51
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/50; B05D7/51; B05D7/14; C; C23; C23C; C23C28/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12556; Y10T428/12569; Y10T428/12583; Y10T428/1259; Y10T428/12611; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A multi-layer surface-treated steel plate consisting essentially of a zinc-containing plating layer, a lithium silicate film layer formed on said plating layer and an organic composite silicate film layer composed of colloidal silica and an organic resin, which is formed on the lithium silicate film layer.
Claim 2
Dependent Claim
46 words
A multi-layer surface-treated steel plate consisting essentially of a zinc-containing plating layer, a lithium silicate film layer formed on said plating layer and an organic composite silicate film layer composed of colloidal silica and an organic resin, which is formed on the lithium silicate film layer.
Claim 3
Dependent Claim
21 words
A multi-layer surface-treated steel plate as set forth in claim 1, wherein the zinc-containing plating layer is a zinc plating layer.
Claim 4
Dependent Claim
22 words
A multi-layer surface-treated steel plate as set forth in claim 1, wherein the zinc-containing plating layer is a zinc alloy plating layer.
Claim 5
Dependent Claim
51 words
A multi-layer surface-treated steel plate as set forth in claim 1, wherein the amount of the lithium silicate film layer deposited on one surface is 0.001 to 1 g/m 2 and the amount of the organic composite silicate film layer deposited on one surface is 0.1 to 4.0 g/m 2 .
Claim 6
Dependent Claim
31 words
A multi-layer surface-treated steel plate as set forth in claim 1, wherein the amount of the lithium silicate film layer deposited on one surface is 0.01 to 0.5 g/m 2 .
Claim 7
Dependent Claim
34 words
A multi-layer surface-treated steel plate as set forth in claim 1 or 5, wherein the amount of the organic composite silicate film layer deposited on one surface is 0.5 to 3.0 g/m 2 .
Claim 8
Dependent Claim
38 words
A multi-layer surface-treated steel plate as set forth in claim 1 or 4, wherein in the lithium silicate (Li 2 O.nSiO 2 ) film layer, the molar ratio n is in the range of from 2 to 20.
Claim 9
Dependent Claim
72 words
A multi-layer surface-treated steel plate as set forth in claim 1, wherein the organic resin in the organic composite silicate film layer is selected from acrylic copolymers, alkyd resins, epoxy resins, fatty acid- and polybasic acid-modified polybutadiene resins, polyamine resins and polycarboxylic acid resins, each having hydrophilic groups such as hydroxyl, carboxyl and amino groups in the molecule, and mixtures and addition condensates of at least two members of the said resins.
References Cited (Backward Citations)
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JPS5477635A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-22 | 1987-11-21 | 1988-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-22 | 1991-11-21 | 1992-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-22 | 1995-11-21 | 1996-05-22 | $7700.00 | Window Closed / Lapsed |