US6528181B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-treated steel sheet having lowered contact resistance and connecting terminal members made by using the same
Assignee: Toyo Kohan Co Ltd
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Filing: 1998-11-10
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Granted: 2003-03-04
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Expires: 2018-11-10
Abstract
Abstract A plated steel sheet and a connection terminal material using the plated steel sheet have low contact resistance and excellent corrosion resistance. The coated film, which has excellent adhesion, is formed by coating a stainless steel base sheet which is coated with a nickel-tin alloy with a solution/suspension of carbon black or graphite, carboxymethyl cellulose, and a water-borne organic resin which is acrylic resin, polyester resin, urethane resin, or phenol resin.
Inventors
- 👤 Keiji Yamane
- 👤 Hitoshi Ohmura
- 👤 Tatsuo Tomomori
- 👤 Hideo Ohmura
- 👤 Yuji Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:37
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; C; C25; C25D; C25D5/00; C25D5/10; C25D5/12; C25D5/48; B05D2350/00; B05D2350/60; B05D2350/65; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12569; Y10T428/12708; Y10T428/12722; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/30; Y10T428/31504; Y10T428/31678; Y10T428/31703
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
49 words
A surface treated steel sheet with low contact resistance comprises: a. a steel sheet which is coated with a nickel-tin alloy; b. a film formed on the nickel-tin alloy coated steel sheet of (a), which film comprises carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin.
Claim 2
Dependent Claim
49 words
A surface treated steel sheet with low contact resistance comprises: a. a steel sheet which is coated with a nickel-tin alloy; b. a film formed on the nickel-tin alloy coated steel sheet of (a), which film comprises carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin.
Claim 3
Dependent Claim
33 words
The surface treated steel sheet according to claim 1 wherein the water borne organic resin is selected from the group consisting of acrylic resins, polyester resins, urethane resins, phenol resins, and mixtures thereof.
Claim 4
Dependent Claim
21 words
The surface treated steel sheet according to claim 1 wherein the steel sheet is iron-chromium stainless steel or iron-nickel-chromium stainless steel.
Claim 5
Dependent Claim
22 words
A connection terminal comprising the surface treated steel sheet according to claim 1 in contact with carbon in an electric connection terminal.
Claim 6
Dependent Claim
94 words
A surface treated steel sheet with low contact resistance comprises: a. a steel sheet which is coated with a nickel-tin alloy wherein said coated steel sheet is formed by plating nickel onto the steel sheet plating tin onto the nickel-plated steel sheet, and subjecting the plated steel sheet to difussion to form a nickel-tin alloy; and b. a film formed on the steel nickel-tin alloy coated sheet of (a), which film comprises carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin and a cross-linking agent for the water borne organic resin.
Claim 7
Dependent Claim
94 words
A surface treated steel sheet with low contact resistance comprises: a. a steel sheet which is coated with a nickel-tin alloy wherein said coated steel sheet is formed by plating nickel onto the steel sheet plating tin onto the nickel-plated steel sheet, and subjecting the plated steel sheet to difussion to form a nickel-tin alloy; and b. a film formed on the steel nickel-tin alloy coated sheet of (a), which film comprises carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin and a cross-linking agent for the water borne organic resin.
Claim 8
Dependent Claim
33 words
The surface treated steel sheet according to claim 5 wherein the water borne organic resin is selected from the group consisting of acrylic resins, polyester resins, urethane resins, phenol resins, and mixtures thereof.
Claim 9
Dependent Claim
21 words
The surface treated steel sheet according to claim 5 wherein the steel sheet is iron-chromium stainless steel or chromium-nickel-chromium stainless steel.
Claim 10
Dependent Claim
22 words
A connection terminal comprising the surface treated steel sheet according to claim 5 in contact with carbon in an electric connection terminal.
Claim 11
Dependent Claim
64 words
A process for producing a surface treated steel sheet with low contact resistance comprising: a. plating nickel onto the steel sheet; b. plating tin onto the nickel-plated steel sheet; c. subjecting the plated steel sheet to diffusion to form a nickel-tin alloy; d. coating said diffused steel sheet with a coating comprising carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin.
Claim 12
Dependent Claim
64 words
A process for producing a surface treated steel sheet with low contact resistance comprising: a. plating nickel onto the steel sheet; b. plating tin onto the nickel-plated steel sheet; c. subjecting the plated steel sheet to diffusion to form a nickel-tin alloy; d. coating said diffused steel sheet with a coating comprising carbon black or graphite, carboxymethyl cellulose, and a water borne organic resin.
Claim 13
Dependent Claim
30 words
The process according to claim 9 wherein the water borne organic resin is selected from the group consisting of acrylic resins, polyester resins, urethane resins, phenol resins, and mixtures thereof.
Claim 14
Dependent Claim
18 words
The process according to claim 9 wherein the steel sheet is iron-chromium stainless steel or iron-nickel-chromium stainless steel.
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) | 2006-03-03 | 2006-09-02 | 2007-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-03 | 2010-09-02 | 2011-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-03 | 2014-09-02 | 2015-03-04 | $7700.00 | Window Closed / Lapsed |