Patents by Inventor Philippe Paradis

Philippe Paradis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6588494
    Abstract: The invention relates to a process for the casting of thin strip having a thickness of less than 10 mm, made of ferritic stainless steel, directly from liquid metal between two rotating cooled rolls having parallel horizontal axes, characterized in that: the said ferritic stainless steel contains (in percentages by weight) from 11 to 18% chromium, less than 1% manganese, less than 1% silicon and less than 2.5% molybdenum; the said ferritic stainless steel has carbon and nitrogen contents, the sum of the contents not exceeding 0.05%; the said ferritic stainless steel contains at least one of the stabilizing elements titanium, niobium, zirconium and aluminium and the sum of their contents is between 0.05 and 1%; the other elements present are iron and the usual impurities resulting from the smelting. The subject of the invention is also thin strip capable of being obtained by the above process.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: July 8, 2003
    Assignee: Usinor
    Inventors: Frédéric Mazurier, Philippe Paradis
  • Patent number: 6106638
    Abstract: The subject of the invention is a process for manufacturing ferritic stainless steel strip, in which a strip of a ferritic stainless steel, of the type containing at most 0.12% of carbon, at most 1% of manganese, at most 1% of silicon, at most 0.040% of phosphorus, at most 0.030% of sulfur and between 16 and 18% of chromium, is solidified, directly from liquid metal, between two close-together, internally-cooled, counterrotating rolls with horizontal axes, wherein said strip is then cooled or left to cool so as to avoid making it remain within the austenite to ferrite and carbides transformation range, wherein said strip is coiled at a temperature of between 600.degree. C. and the martensitic transformation temperature Ms, wherein the coiled strip is left to cool at a maximum rate of 300.degree. C./h down to a temperature of between 200.degree. C. and ambient temperature and wherein said strip then undergoes box annealing.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: August 22, 2000
    Assignee: Usinor
    Inventors: Philippe Paradis, Philippe Martin
  • Patent number: 5807444
    Abstract: The subject of the invention is a process for the continuous casting of an austenitic stainless steel strip directly from liquid metal of composition, expressed in percentages by weight: C.ltoreq.0.08%, Si.ltoreq.1%; Mn.ltoreq.2%; P.ltoreq.0.045%; S.ltoreq.0.030%; Cr between 17.0 and 20.0%; Ni between 8.0 and 10.5% on a machine for casting onto one or between two moving walls whose external surface is provided with dimples and in which the region surrounding the meniscus is inerted with an inerting gas of controlled composition, wherein:a Cr.sub.equ /Ni.sub.equ ratio greater than 1.55 is conferred on said liquid metal, with:Cr.sub.equ =% Cr+1.37.times.% Mo+1.5.times.% Si+2.times.% Nb+3.times.% Ti andNi.sub.equ =% Ni+0.31.times.% Mn+22.times.% C+14.2.times.% N+% Cu;one or more moving walls are used whose entire surface includes touching dimples having a diameter of between 100 and 1500 .mu.m and a depth of between 20 and 150 .mu.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: September 15, 1998
    Assignees: Usinor Sacilor, Thyssen Stahl Aktiengesellschaft
    Inventors: Philippe Paradis, Christian Marchionni, Manuel Bobadilla, Jean-Michel Damasse