Patents by Inventor Gareth Charles Riggs

Gareth Charles Riggs 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).

  • Methods of Making Light Diffusing Films and Articles Using the Same
    Publication number: 20080128928
    Abstract: Disclosed herein are light diffusing films, methods of making the same and articles using the same. In one embodiment, a method for producing a film, comprising: combining, to form a combination, a polycarbonate having a yellowness index of about 0.8 to about 1.5 as measured in accordance with ASTM E313-73 (D1925), a phosphite stabilizer, an epoxy stabilizer, and light diffusing; forming the combination into the film; wherein the film comprises a hiding power of 0 to about 0.5.
    Type: Application
    Filed: February 4, 2008
    Publication date: June 5, 2008
    Inventors: Cristina Cojocariu, Emine Elif Gurel, Grant Hay, Philip M. Peters, Shixiong Zhu, Christopher A. Coenjarts, Gareth Charles Riggs
  • Light diffusing films, methods of making the same, and articles using the same
    Patent number: 7297381
    Abstract: Disclosed herein are light diffusing films, methods of making the same and articles using the same. In one embodiment, a light diffusing film is formed from a composition comprising: a polycarbonate, phosphite stabilizer, epoxy stabilizer, hindered phenol stabilizer, and light diffusing particles having a refractive index of about 1.3 to about 1.7. The film comprises a hiding power of 0 to about 0.5. In one embodiment, a method for producing a film comprises combining a polycarbonate, a phosphite stabilizer, an epoxy stabilizer, and light diffusing particles to form a combination, and forming the combination into the film.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: November 20, 2007
    Assignee: General Electric Company
    Inventors: Cristina Cojocariu, Emine Elif Gurel, Grant Hay, Philip M. Peters, Shixiong Zhu, Christopher A. Coenjarts, Gareth Charles Riggs