Patents by Inventor Andrew Stewart Hughes

Andrew Stewart Hughes 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).

  • Wood preservative formulations comprising isothtazolones which provide protection against surface staining
    Patent number: 11457630
    Abstract: The present invention provides a wood preservative formulation comprising an isothiazolone, an organic fungicidal timber decay preservative and an unsaturated carboxylic or sulphonic acid, salt or anhydride thereof. The formulations of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing prolonged protection against in-service surface staining. The invention also provides methods for treating wood and other cellulosic substrates with said formulations.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 4, 2022
    Assignee: Arch Timber Protection Limited
    Inventors: Paul Stuart Warburton, Lee MAson, Andrew Stewart Hughes
  • WOOD PRESERVATIVE FORMULATIONS COMPRISING ISOTHIAZOLONES WHICH PROVIDE PROTECTION AGAINST SURFACE STAINING
    Publication number: 20170064960
    Abstract: The present invention provides a wood preservative formulation comprising an isothiazolone, an organic fungicidal timber decay preservative and an unsaturated carboxylic or sulphonic acid, salt or anhydride thereof. The formulations of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing prolonged protection against in-service surface staining. The invention also provides methods for treating wood and other cellulosic substrates with said formulations.
    Type: Application
    Filed: November 17, 2016
    Publication date: March 9, 2017
    Inventors: Paul Stuart WARBURTON, Lee MASON, Andrew Stewart HUGHES
  • Wood preservative compositions useful for treating copper-tolerant fungi
    Patent number: 9023483
    Abstract: The present invention provides a method of protecting wood or other celiulosic material from decay by copper-tolerant fungi, and wood preservative formulations for use in the same. The wood preservative formulations comprise a biocidal metal compound, a 1,2,4-triazole and a didecyl quaternary ammonium cation. Didecyldimethyl quaternary ammonium compounds are particularly preferred.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: May 5, 2015
    Assignee: Arch Timber Protection Limited
    Inventors: Craig Andrew Mars, David Grindon Cantrell, Kevin Hughes, Andrew Stewart Hughes
  • WOOD PRESERVATIVE COMPOSITIONS USEFUL FOR TREATING COPPER-TOLERANT FUNGI
    Publication number: 20130209823
    Abstract: The present invention provides a method of protecting wood or other celiulosic material from decay by copper-tolerant fungi, and wood preservative formulations for use in the same. The wood preservative formulations comprise a biocidal metal compound, a 1,2,4-triazole and a didecyl quaternary ammonium cation. Didecyldimethyl quaternary ammonium compounds are particularly preferred.
    Type: Application
    Filed: June 21, 2011
    Publication date: August 15, 2013
    Applicant: ARCH TIMBER PROTECTION LIMITED
    Inventors: Craig Andrew Mars, David Grindon Cantrell, Kevin Hughes, Andrew Stewart Hughes
  • WOOD PRESERVATIVE FORMULATIONS COMPRISING ISOTHIAZOLONES WHICH PROVIDE PROTECTION AGAINST SURFACE STAINING
    Publication number: 20130210873
    Abstract: The present invention provides a wood preservative formulation comprising an isothiazolone, an organic fungicidal timber decay preservative and an unsaturated carboxylic or sulphonic acid, salt or precursor thereof. The formulations of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing prolonged protection against in-service surface staining. The invention also provides methods for treating wood and other cellulosic substrates with said formulations.
    Type: Application
    Filed: April 13, 2011
    Publication date: August 15, 2013
    Applicant: Arch Timber Protection Limited
    Inventors: Paul Stuart Warburton, Lee Mason, Andrew Stewart Hughes
  • Antisapstain compositions comprising a haloalkynl compound, an azole and an unsaturated acid
    Patent number: 8435643
    Abstract: The present invention provides antisapstain compositions comprising a haloalkynyl compound, an azole and an unsaturated carboxylic or sulphonic acid. The compositions of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing antisapstain activity. The invention also provides methods for treating wood and other cellulosic substrates with said compositions.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: May 7, 2013
    Assignee: Arch Timber Protection Limited
    Inventors: Paul Stuart Warburton, Lee Mason, Andrew Stewart Hughes
  • Antisapstain compositions comprising a haloalkynl compound, an azole and an unsaturated acid
    Publication number: 20110111245
    Abstract: The present invention provides antisapstain compositions comprising a haloalkynyl compound, an azole and an unsaturated carboxylic or sulphonic acid. The compositions of the invention are surprisingly effective at protecting wood and other cellulosic substrates, in particular at providing antisapstain activity. The invention also provides methods for treating wood and other cellulosic substrates with said compositions.
    Type: Application
    Filed: October 28, 2010
    Publication date: May 12, 2011
    Inventors: Paul Stuart Warburton, Lee Mason, Andrew Stewart Hughes