Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2008-07-15
2008-07-15
La Villa, Michael (Department: 1794)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S632000, C428S681000, C428S335000, C428S340000
Reexamination Certificate
active
11254641
ABSTRACT:
A hot press-formed article having improved corrosion resistance and coating adhesion when coated is obtained by hot press forming of a zinc-based plated steel material. It has a zinc-based plating layer comprising an iron-zinc solid solution phase and atop it a zinc oxide layer. The average thickness of the zinc oxide layer which is the outermost layer is at most 2 μm. A hot press-formed article having a good appearance and excellent corrosion resistance, coating adhesion, post-coating corrosion resistance, and weldability has a layer (2) consisting essentially of an iron-zinc solid solution phase atop a base material steel sheet (1). It also has a zinc oxide layer (3) with an average thickness of at most 5 μm as an uppermost layer, but it does not have a substantial amount of an iron-zinc intermetallic compound phase. The total amount of Al contained in the iron-zinc solid solution layer (2) and the zinc oxide layer (3) is at most 0.5 g/m2, and/or the total amount of Al oxides contained in these layers is at most 5 mg/m2.
REFERENCES:
patent: 4707415 (1987-11-01), Ikeda et al.
patent: 58-052494 (1983-03-01), None
patent: 58-52494 (1983-03-01), None
patent: 03-002391 (1991-01-01), None
patent: 2000-038640 (2000-02-01), None
patent: 2000-054161 (2000-02-01), None
patent: 2000-160358 (2000-06-01), None
patent: 2001-353548 (2001-12-01), None
patent: 2002-012958 (2002-01-01), None
patent: 2002-102980 (2002-04-01), None
patent: 2002-282951 (2002-10-01), None
patent: 2003-002058 (2003-01-01), None
patent: 2003-073774 (2003-03-01), None
patent: 2003-126921 (2003-05-01), None
patent: 2004-323897 (2004-11-01), None
Fukui Kunihiro
Ichikawa Masanobu
Imai Kazuhito
Obayashi Akira
Sudo Shuntaro
Clark & Brody
La Villa Michael
Sumitomo Metal Industries Ltd.
Toyoda Iron Works Co., Ltd.
Toyota Jodosha Kabushiki Kaisha
LandOfFree
Hot press-formed article does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot press-formed article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot press-formed article will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3937552