Patents by Inventor Timothy C. Duzick

Timothy C. Duzick 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).

  • Methods for preparing agglomerated pellets of polytetrafluoroethylene and molded articles and the agglomerated pellets of polytetrafluoroethylene and molded articles prepared thereby
    Patent number: 6911489
    Abstract: PTFE pellets with good bulk density, homogeneity, and flowability properties may be obtained by: (1) wetting a PTFE powder with a solvent, to obtain a wetted PTFE powder; (2) forming the wetted PTFE powder into agglomerated pellets of PTFE; and (3) drying the agglomerated pellets of PTFE pellets, in which the drying of the agglomerated pellets of PTFE is carried out in a fluidized bed drier. The PTFE pellets so obtained may be used to prepare molded articles of PTFE.
    Type: Grant
    Filed: June 10, 2002
    Date of Patent: June 28, 2005
    Assignee: Asahi Glass Fluoropolymers USA, Inc.
    Inventors: Pamela J. Baron, Gary Eckrote, Tonya James, Ronald Partridge, Timothy C. Duzick
  • Methods for preparing agglomerated pellets of polytetrafluoroethylene and molded articles and the agglomerated pellets of polytetrafluoroethylene and molded articles prepared thereby
    Publication number: 20030229167
    Abstract: PTFE pellets with good bulk density, homogeneity, and flowability properties may be obtained by:
    Type: Application
    Filed: June 10, 2002
    Publication date: December 11, 2003
    Applicant: Asahi Glass Fluoropolymers USA, INC.
    Inventors: Pamela J. Baron, Gary Eckrote, Tonya James, Ronald Partridge, Timothy C. Duzick
  • Sanitary seal
    Publication number: 20020074798
    Abstract: The present invention is directed to a seal assembly for use in sealing a joint between grooved pipe joint ferrules and in particular to a sanitary seal assembly. The seal assembly has an annular retaining part that has a seal cavity and an elastomeric seal shaped to fit within the cavity and is positioned by the cavity.
    Type: Application
    Filed: December 14, 2000
    Publication date: June 20, 2002
    Inventors: Timothy C. Duzick, Thomas C. Lucier
  • Catalysts for halogenated hydrocarbon processing, their precursors and their preparation and use
    Patent number: 6127585
    Abstract: Processes are disclosed for decreasing the chlorine to carbon ratio for halogenated hydrocarbons containing chlorine and from 1 to 6 carbon atoms, in the presence of a multiphase catalyst. The processes each involve (1) preparing a single phase solid catalyst precursor which has a structure that collapses at a temperature of about 400.degree. C. or less and has the formula (NH.sub.3).sub.6 Ru.sub.l-r-s Co.sub.r Cr.sub.s MF.sub.6, where r+s is in the range of 0.00 to 0.99, and M is at least one trivalent metal selected from the group consisting of Al, Cr, Fe, V, Sc and Ga; and (2) producing the multiphase catalyst by heating the single phase solid catalyst precursor to about 400.degree. C. or less in an non-oxidizing atomsphere to produce a multiphase composition wherein a phase containing ruthenium is homogeneously dispersed with a phase containing metal fluoride.Also disclosed are single phase fluoride compositions having the formula (NH.sub.3).sub.6 Ru.sub.l-r-s Co.sub.r Cr.sub.s MF.sub.
    Type: Grant
    Filed: May 27, 1998
    Date of Patent: October 3, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Timothy C. Duzick, Velliyur Nott Mallikarjuna Rao, Munirpallam A. Subramanian