Patents Assigned to xc
  • Publication number: 20040035544
    Abstract: A mold and a method of casting a part wherein the casting surfaces of the mold including the nooks and crannies of the mold are bounded by pitted mold surfaces with the pitted mold surfaces having surface voids therein that are sufficiently small to prevent the molten metal to enter therein; however, when the molten metal is poured in the mold having the pitted surfaces the molten metal solidifies on top of the pitted surface without entering into the pits in the mold surface, yet at the same time the molten metal flows smoothly over all the mold surfaces including the structural nooks and crannies of the mold to form a cast product that is substantially free of voids and fissures.
    Type: Application
    Filed: August 22, 2002
    Publication date: February 26, 2004
    Applicant: xc
    Inventors: Norman E. Peterson, Tracy L. Cain
  • Publication number: 20030034144
    Abstract: An apparatus and method for pressure casting a battery part wherein at least one of the mold members forming the surfaces of an internal battery part cavity are displaced with respect to one another to reduce the volume of the mold cavity formed between the two parts to thereby intensify the pressure sufficiently high pressure so as to inhibit the formation of cracks and tears in a cast part.
    Type: Application
    Filed: July 23, 2002
    Publication date: February 20, 2003
    Applicant: xc
    Inventor: Robert W. Ratte
  • Patent number: 6248268
    Abstract: Polymer microparticles suitable for gel chromatography are formed by spraying a composition of a thermally-gelling polymer in an aqueous medium into ambient air and allowing the atomized composition to gel in the air. The gelled microparticles have a gel strength sufficient to preserve the structural integrity of the gelled microparticle upon collection thereof.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: June 19, 2001
    Assignee: XC Corporation
    Inventor: Richard B. Cook
  • Patent number: 5962348
    Abstract: The present invention discloses a method a method of making a material for thermal cores and the material so made. In particular, the present invention disclose a method including the steps of applying thermally conductive particles over at least a portion of a fiber layer, providing another fiber layer upon the fiber layer, and repeating the above steps as desired. In another aspect of the present invention is disclosed a method of making a thermally conductive material including applying thermally conductive particles upon at least a portion of a fiber prepreg layer, providing another fiber prepreg layer upon the fiber layer, repeating the above steps as desired, and bonding the fiber prepreg layers, including the thermally conductive particles, together. The material in accordance with the present invention includes a plurality of layers made of thermally conductive fibers bonded by a resin, and a plurality of interposed layers of resin having a high concentration of high conductivity particles therein.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: October 5, 1999
    Assignee: XC Associates
    Inventors: John D. Bootle, Frank Burzesi