Patents by Inventor Steven Charles Davies

Steven Charles Davies 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).

  • Esterification catalyst, polyester process and polyester article
    Patent number: 7767612
    Abstract: A catalyst composition for producing polyesters comprises: a) an organometallic compound obtained by reacting an orthoester or condensed orthoester of titanium, zirconium or aluminum, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base; and b) at least one compound comprising germanium, antimony or tin. Polyesters obtained by esterification reaction in the presence of the catalyst compositions according to the present invention exhibit improved melt properties and are particularly suitable for production of textile and commercial fibers, films and rigid packaging.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: August 3, 2010
    Assignees: Johnson Matthey PLC, Performance Fibers, Inc.
    Inventors: Andrew Martin Bellamy, Charles Mark Lindall, Calum Harry McIntosh, Martin Graham Partridge, John Armstrong Young, Steven Charles Davies
  • Esterfication catalyst, polyester process and polyester article
    Publication number: 20040077486
    Abstract: A catalyst composition for producing polyesters comprises: a) an organometallic compound obtained by reacting an orthoester or condensed orthoester of titanium, zirconium or aluminum, an alcohol containing at least two hydroxyl groups, a 2-hydroxy carboxylic acid and a base; and b) at least one compound comprising germanium, antimony or tin. Polyesters obtained by esterification reaction in the presence of the catalyst compositions according to the present invention exhibit improved melt properties and are particularly suitable for production of textile and commercial fibers, films and rigid packaging.
    Type: Application
    Filed: November 24, 2003
    Publication date: April 22, 2004
    Inventors: Andrew Martin Bellamy, Charles Mark Lindall, Calum Harry McIntosh, Martin Graham Partridge, John Armstrong Young, Steven Charles Davies