Patents by Inventor Helen Skelton

Helen Skelton 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).

  • NOpurification catalyst
    Patent number: 9084988
    Abstract: The present invention relates to a catalyst able to exhibit an NOx purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxides purification catalyst composed of particles having an average particle size of 0.2 to 100 nm and including gold atoms and iron atoms in a state of close proximity.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 21, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Mayuko Osaki, Hirohito Hirata, Naoyuki Hara, Brian Johnson, Andrew Wheatley, Helen Skelton, Muriel Lepage
  • NOpurification catalyst
    Patent number: 9079167
    Abstract: The invention relates to a catalyst able to exhibit an NOX purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxide purification catalyst including gold atoms and nickel atoms in a solid and a state of close proximity.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: July 14, 2015
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CAMBRIDGE ENTERPRISE LIMITED
    Inventors: Mayuko Osaki, Hirohito Hirata, Naoyuki Hara, Brian Johnson, Andrew Wheatley, Helen Skelton, Muriel Lepage
  • NOX PURIFICATION CATALYST
    Publication number: 20140194280
    Abstract: The present invention relates to a catalyst able to exhibit an NOx purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxides purification catalyst composed of particles having an average particle size of 0.2 to 100 nm and including gold atoms and iron atoms in a state of close proximity.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicants: CAMBRIDGE ENTERPRISE LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko OSAKI, Hirohito HIRATA, Naoyuki HARA, Brian JOHNSON, Andrew WHEATLEY, Helen SKELTON, Muriel LEPAGE
  • NOX PURIFICATION CATALYST
    Publication number: 20140194281
    Abstract: The invention relates to a catalyst able to exhibit an NOX purification performance at a low temperature and/or in an oxidizing atmosphere, that is, a nitrogen oxide purification catalyst including gold atoms and nickel atoms in a solid and a state of close proximity.
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicants: CAMBRIDGE ENTERPRISE LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mayuko OSAKI, Hirohito HIRATA, Naoyuki HARA, Brian JOHNSON, Andrew WHEATLEY, Helen SKELTON, Muriel LEPAGE
  • Water-insoluble violet benzimidazolone monoazo pigments
    Patent number: 6706864
    Abstract: Water-insoluble violet benzimidazolone monoazo pigments of the formula: wherein R1, R2 and R3 each represent hydrogen, chlorine, bromine, methyl, methoxy, ethoxy, nitro or a group of the formula —COOR with R being hydrogen, methyl or ethyl, and R4 represents hydrogen, chlorine, bromine, methyl, methoxy, ethoxy or nitro group. Due to the presence of two 5-membered heterocyclic rings in the molecule, these pigments display very high thermoresistance and excellent fastness to migration.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: March 16, 2004
    Assignee: Dominion Colour Corporation
    Inventors: Mark J. Vincent, Helen Skelton, Jaroslav Slupecky, Justin Yee