Patents by Inventor Edwin James Lightfoot

Edwin James Lightfoot 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).

  • Diffuse reflective article
    Patent number: 7660040
    Abstract: A diffuse reflective article is provided including a diffuse reflector of light positioned within a structure defining an optical cavity. The diffuse reflector is a nonwoven sheet containing a plurality of inter-fiber and intra-fiber pores of optimal light scattering dimension. Also provided is an optical display, including: (i) a structure defining an optical cavity; (ii) a light source positioned within the optical cavity; (iii) a display panel through which light from the light source passes; and (iv) a diffuse reflector positioned within the optical cavity for reflecting light from the light source toward the display panel, wherein the diffuse reflector is a nonwoven sheet containing a plurality of inter-fiber and intra-fiber pores of optimal light scattering dimension.
    Type: Grant
    Filed: February 7, 2006
    Date of Patent: February 9, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Adam Ben Starry, William John Gambogi, Jr., Robert William Johnson, Edwin James Lightfoot, Hyunkook Shin, Robert D. Smith-Gillespie, Torence John Trout, Jr.
  • Diffuse reflector comprising nonwoven sheet with binder layer comprising binder and scatterer of visible light
    Publication number: 20080080055
    Abstract: This invention relates to diffuse reflectors of visible light comprising a nonwoven sheet having on at least one face thereof a binder layer comprising a binder and a scatterer of visible light dispersed in the binder. These diffuse reflectors have utility in light management in optical displays such as backlit LCD displays for lap top computers and televisions.
    Type: Application
    Filed: September 25, 2007
    Publication date: April 3, 2008
    Inventors: Edwin James Lightfoot, William George O'Brien, Adam Ben Starry, Robert William Johnson, William John Gambogi