Steel for components of chemical installations

Details Steel for components of chemical installations Steel for components of chemical installations

2004-11-05

2010-02-16

Yee, Deborah (Department: 1793)

Metal treatment

Stock

Ferrous

C420S108000, C420S109000

Reexamination Certificate

active

07662246

ABSTRACT:
An iron-based alloy for use in a material for high-pressure components. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

REFERENCES:
patent: 5225156 (1993-07-01), Ototani
patent: 5458704 (1995-10-01), Bobbert et al.
patent: 5746843 (1998-05-01), Miyata et al.
patent: 0580062 (1994-01-01), None
patent: 1127951 (2001-08-01), None
patent: 59-129724 (1984-07-01), None
patent: 401179896 (1989-07-01), None
patent: 03-232946 (1991-10-01), None
patent: 08-120400 (1996-05-01), None
English translation of Japanese patent 01-179896, Hiroyuki Doi et al., Jul. 17, 1989.
Metals Handbook, Second Desk Edition, ASM International, 1998, “Carbon and Alloy Steels” 220-221.
Böhler Hochdrucktechnik, “Bars for Ultra High Pressure pipes from DIN 1.6952”, Aug. 30, 1999.
Stamicarbon bv “Chemical 53 Plant—Ultra-HSLA VAR/ESR material for tubular reactor application”, A4 72767, Nov. 2002/Feb. 2003.
Stamicarbon bv “Chemical 53 Plant—Low alloy forging steel 26NiCrMo 14.6”, A4 71434, Jan. 2001.
Azuma T., et al. “Production and Properties of Superclean 3.5% NiCrMoV Rotor Forging for Low Pressure Steam Turbine”, Proceedings of the Robert I. Jaffee Memorial Symposium on Clean Materials Technology, ASM Materials Week, Chicago, Illinois, USA, Nov. 2-5, 1992, pp. 213-220.
Honeyman G.A., et al. “Temper Embrittlement in High Strength Pressure Vessel Steels for Polyethylene Manufacture”, pp. 243-253, accompanied by a printout from the Internet allegedly showing this article to be from Clean Steel: Superclean Steel; Conference proceedings Mar. 6-7, 1995, London, UK, 1996, editors: Nutting J., Viswanathan, R., Institute of Materials.
Analysis sheets (E1-E8) relating to steels allegedly sold in Germany in Jul. and Aug. 2003 by the company BGH Edelstahl Siegen GmbH, Siegen, Germany, to the company Uhde High Pressure Technologies GmbH, Hagen, Germany.
Böhler Edelstahl Handbuch (Böhler Stainless Steel Handbook), Böhler Edelstahl GmbH & Co KG, Kapfenberg Austria, 1998 (AL 005 D—07.98—1000 N), pp. 446-454, 468-473.
P.A. Bralsford, E. Hydes, G.A. Honeyman: “Residual contents in purchased scrap for use in basic electric arc technology” Clean Steel: Superclean Steel, Conference Proceedings, 1996, pp. 53-58, XP002427800, Londo.
R. Viswanathan: “Application of clean steel/superclean steel technology inThe electric power industry—overview of EPRI research and products” Clean Steel: Superclean Steel, Conference Proceedings, 1996, pp. 1-31, XP002427801, London.
L.E.K. Holappa, A.S. Helle: “Inclusion control in high performance steels”Journal of Materials Processing Technology, Nr. 53, 1995, pp. 177-186, XP002427802, London.
English language Abstract of JP 59-129724.

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