Patents by Inventor Fred de Sylva

Fred de Sylva 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).

  • Casting steel strip
    Patent number: 5701948
    Abstract: In continuous casting of steel strip, a casting pool of molten metal is supported on moving casting surfaces which are chilled to cause solidification of steel on the casting surfaces. The casting surfaces are textured by provision of parallel groove and ridge formations (11) defining V-shaped grooves (12) and ridges (13) with sharp edges (14). The depth (d) of the texture from ridge peak to groove root is in the range 5 to 50 microns and the pitch (p) between the grooves is in the range 100 to 250 microns. The casting surfaces may be peripheral surfaces of casting rolls of a twin roll caster.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: December 30, 1997
    Assignees: Iskikawajima-Harima Heavy Industries Company Limited, BHP Steel (JLA) Pty Ltd.
    Inventors: Lazar Strezov, Rama Ballav Mahapatra, Fred de Sylva, Kannappar Mukunthan