Patents by Inventor Edmund Kwok-Leung Lau

Edmund Kwok-Leung Lau 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).

  • Light stabilizer packages for partial paint applications
    Patent number: 6077889
    Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: June 20, 2000
    Assignee: Solvay Engineered Polymers
    Inventors: Edmund Kwok-Leung Lau, David K. Edge
  • Light stabilizer packages for partial paint applications
    Patent number: 6051637
    Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: April 18, 2000
    Assignee: Solvay Engineered Polymers
    Inventors: Edmund Kwok-Leung Lau, David K. Edge
  • Light stabilizer packages for paint applications
    Patent number: 5733956
    Abstract: A light stabilizer package is disclosed. The light stabilizer package comprises a monomeric HALS having a pKa of no greater than 7, an ultraviolet light absorber and, optionally, a polymeric HALS having a pKa of less than 7. The light stabilizer package may be blended with a thermoplastic olefin to form a moldable light stable composition. An article comprising the moldable light stable composition may have an exterior surface that is at least partially coated.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 31, 1998
    Assignee: Solvay Engineered Polymers
    Inventors: Edmund Kwok-Leung Lau, David K. Edge