Patents by Inventor William C. Sumner

William C. Sumner 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).

  • Optoelectronic devices incorporating fluoropolymer compositions for protection
    Patent number: 9219182
    Abstract: The fluoropolymer compositions of the present invention generally incorporate ingredients comprising one or more fluoropolymers, an ultraviolet light protection component (hereinafter UV protection component), and optionally one or more additional ingredients if desired. The UV protection component includes a combination of at least one hindered tertiary amine (HTA) compound having a certain structure and a weight average molecular weight of at least 1000. This tertiary amine is used in combination with at least one organic, UV light absorbing compound (UVLA compound) having a weight average molecular weight greater than 500. When the HTA compound and the UVLA compound are selected according to principles of the present invention, the UV protection component provides fluoropolymer compositions with significantly improved weatherability characteristics for protecting underlying materials, features, structures, components, and/or the like.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: December 22, 2015
    Assignee: Dow Global Technologies LLC
    Inventors: Xuming Chen, Pak-Wing S. Chum, Kevin E. Howard, Leonardo C. Lopez, William C. Sumner, Shaofu Wu
  • OPTOELECTRONIC DEVICES INCORPORATING FLUOROPOLYMER COMPOSITIONS FOR PROTECTION
    Publication number: 20140124031
    Abstract: The fluoropolymer compositions of the present invention generally incorporate ingredients comprising one or more fluoropolymers, an ultraviolet light protection component (hereinafter UV protection component), and optionally one or more additional ingredients if desired. The UV protection component includes a combination of at least one hindered tertiary amine (HTA) compound having a certain structure and a weight average molecular weight of at least 1000. This tertiary amine is used in combination with at least one organic, UV light absorbing compound (UVLA compound) having a weight average molecular weight greater than 500. When the HTA compound and the UVLA compound are selected according to principles of the present invention, the UV protection component provides fluoropolymer compositions with significantly improved weatherability characteristics for protecting underlying materials, features, structures, components, and/or the like.
    Type: Application
    Filed: July 3, 2012
    Publication date: May 8, 2014
    Applicant: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Xuming Chen, Pak-Wing S. Chum, Kevin E. Howard, Leonardo C. Lopez, William C. Sumner, Shaofu Wu
  • Process for hydrolysis of ortho-aromatic di-aryl ethers
    Patent number: 4978811
    Abstract: Ortho-aromatic diaryl ethers, such as o-biphenylyl phenyl ether, are hydrolyzed to corresponding phenolic compounds, such as o-phenylphenol and phenol, when contacted with water in the presence of ceria or thoria at a temperature of between about 250.degree. C. and 700.degree. C.
    Type: Grant
    Filed: April 1, 1988
    Date of Patent: December 18, 1990
    Assignee: The Dow Chemical Company
    Inventors: Robert A. Koster, Philip J. Brondsema, Willis J. Pennington, William C. Sumner, Susan E. Vilmer