US4610936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot-dip zinc alloy coated steel products
Assignee: Nippon Soda Co Ltd
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Filing: 1984-11-19
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Granted: 1986-09-09
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Expires: 2004-11-19
Abstract
Abstract Hot-dip zinc alloy coated steel products coated with a Zn-Al-Si-Mg alloy having a composition of between 3.5 and 5.0 wt % aluminum, between 0.02 and 0.5 wt % silicon, between 0.01 and less than 0.05 wt % magnesium, and remainder zinc with unavoidable impurities.
Inventors
- 👤 Takehiro Isobe
- 👤 Tatsuji Hashimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 00:59
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/013; C; C22; C22C; C22C18/00; C22C18/04; C23; C23C; C23C2/00; C23C2/04; C23C2/06; C23C2/12; C23C2/30; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/12799
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
71 words
A zinc alloy coated steel product coated with a Zn-Al-Si-Mg alloy having a composition consisting of between 3.5 and 5.0 wt% aluminum, between 0.02 and 0.5 wt% silicon, between 0.01 and less than 0.05 wt% magnesium and remainder zinc and unavoidable impurities, said product being capable of withstanding, after exposure to saturated steam for three days at 98° C., a 2T bending test without cracking and a tape test without peeling.
Claim 2
Dependent Claim
71 words
A zinc alloy coated steel product coated with a Zn-Al-Si-Mg alloy having a composition consisting of between 3.5 and 5.0 wt% aluminum, between 0.02 and 0.5 wt% silicon, between 0.01 and less than 0.05 wt% magnesium and remainder zinc and unavoidable impurities, said product being capable of withstanding, after exposure to saturated steam for three days at 98° C., a 2T bending test without cracking and a tape test without peeling.
Claim 3
Dependent Claim
19 words
The zinc alloy coated steel product of claim 1, wherein said composition contains between 0.01 and 0.04 wt% magnesium.
Claim 4
Dependent Claim
22 words
The zinc alloy coated steel product of claim 1, wherein said composition contains less than 0.02 wt% iron as an unavoidable impurity.
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) | 1989-09-08 | 1990-03-10 | 1990-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-08 | 1994-03-10 | 1994-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-08 | 1998-03-10 | 1998-09-09 | $7700.00 | Window Closed / Lapsed |