Patents by Inventor Darrell David Dyas

Darrell David Dyas 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).

  • Flame retardant compositions
    Publication number: 20030149143
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Application
    Filed: July 29, 2002
    Publication date: August 7, 2003
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Flame retardant compositions
    Publication number: 20030130384
    Abstract: Polyolefins, especially polypropylene, can be made flame retardant by the incorporation therein of a synergistic mixture of a selected hindered amine substituted by an alkoxy, cycloalkoxy or hydroxyalkoxy moiety and a selected organic or inorganic brominated and/or phosphorus containing flame retardant, such as ammonium polyphosphate or decabromodiphenyl oxide wherein the amount of organic or inorganic flame retardant required to achieve an acceptable level of flame retardancy is significantly reduced compared to that needed when the hindered amine is not present.
    Type: Application
    Filed: December 19, 2002
    Publication date: July 10, 2003
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan
  • Flame retardant compositions
    Publication number: 20020010235
    Abstract: Hindered amine compounds containing a group of the formula 1
    Type: Application
    Filed: August 1, 2001
    Publication date: January 24, 2002
    Inventors: Douglas Wayne Horsey, Stephen Mark Andrews, Leonard Harris Davis, Darrell David Dyas, Robert Leo Gray, Anunay Gupta, Bruce Vincent Hein, Joseph Stephen Puglisi, Ramanathan Ravichandran, Paul Shields, Rangarajan Srinivasan