Patents by Inventor Patrick S. Bryant

Patrick S. Bryant 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).

  • Chemical process and production unit
    Patent number: 7682592
    Abstract: The invention relates to a continuous process for producing chlorine dioxide comprising the steps of continuously: a) feeding to a reactor (1) an acid, hydrogen peroxide and alkali metal chlorate; b) reacting the alkali metal chlorate with the acid and the hydrogen peroxide to form a product stream (2) containing chlorine dioxide, oxygen and alkali metal salt of the acid, c) bringing the product stream from the reactor to an eductor (3) and mixing it with motive water fed to the eductor and thereby forming a diluted product stream; d) removing oxygen from the diluted product stream; e) withdrawing part of the diluted product stream (9), before, during or after the step of removing oxygen; f) adding water (11) to the non-withdrawn part of the diluted product stream to form a recycle stream (12); and, g) bringing the recycle stream (12) to the eductor and feeding it thereto as motive water (4).
    Type: Grant
    Filed: November 18, 2005
    Date of Patent: March 23, 2010
    Assignee: AKZO Nobel N.V.
    Inventors: Gary Charles, Daniel D. Olson, Patrick S. Bryant
  • Process for removal of lignin from lignocellulosic material
    Patent number: 6752904
    Abstract: The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a high-yield pulping process with a delignifying gas comprising gaseous compounds comprising at least one oxygen atom such as chlorine dioxide containing gas.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: June 22, 2004
    Assignee: Akzo Nobel N.V.
    Inventors: Patrick S. Bryant, John C. Sokol, Dwane S. Hutto
  • Process for gas phase pretreating of lignocellulosic containing material
    Patent number: 6569285
    Abstract: The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a chemical pulping process with a delignifying gas, wherein the gas comprises chlorine dioxide.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: May 27, 2003
    Assignee: Akzo Nobel N.V.
    Inventors: Patrick S. Bryant, John C. Sokol
  • Pulping process
    Publication number: 20020088569
    Abstract: The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a high-yield pulping process with a delignifying gas comprising gaseous compounds comprising at least one oxygen atom such as chlorine dioxide containing gas.
    Type: Application
    Filed: March 2, 2001
    Publication date: July 11, 2002
    Inventors: Patrick S. Bryant, John C. Sokol, Dwane S. Hutto
  • Pulping process
    Publication number: 20020088573
    Abstract: The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a chemical pulping process with a delignifying gas, wherein the gas comprises chlorine dioxide.
    Type: Application
    Filed: March 2, 2001
    Publication date: July 11, 2002
    Inventors: Patrick S. Bryant, John C. Sokol
  • Film tear-tape and packaging film having tear-tape adherent thereto
    Patent number: 4337284
    Abstract: A tear-tape for attachment to a polymeric packaging film comprises a thermoplastic polymeric substrate having on a surface thereof a layer of a sealing resin comprising a blend of an ethylene-vinyl acetate copolymer and a plasticizer therefor. Bonding between the tear-tape and a polymeric packaging film substrate is enhanced by the presence of the plasticizer.
    Type: Grant
    Filed: January 28, 1980
    Date of Patent: June 29, 1982
    Assignee: Imperial Chemical Industries Limited
    Inventors: Gordon Cooper, Patrick S. Bryant