Patents by Inventor DOUG McWILLIAMS

DOUG McWILLIAMS 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).

  • WIDE-VIEW OPTICAL FILM HAVING REVERSED WAVELENGTH DISPERSION
    Publication number: 20140205822
    Abstract: An optical compensation film is disclosed herein, which is made by uniaxially or biaxially stretching of a multilayer film including a first polymer film having a refractive index profile satisfying the equations of (nx+ny)/2?nz and |nx?ny|<0.005 and a second polymer film having a refractive index profile satisfying the equations of (nx+ny)/2<nz and |nx?ny|<0.005, wherein nx and ny represent in-plane refractive indices and nz the thickness-direction refractive index of the films, and wherein said optical compensation film has a positive in-plane retardation that satisfies the relations of 0.7<R450/R550<1 and 1<R650/R550<1.25, wherein R450, R550, and R650 are in-plane retardations at the light wavelengths of 450 nm, 550 nm, and 650 nm respectively.
    Type: Application
    Filed: January 24, 2013
    Publication date: July 24, 2014
    Applicant: AKRON POLYMER SYSTEMS, INC.
    Inventors: BIN WANG, THAUMING KUO, TED GERMROTH, DONG ZHANG, DOUG McWILLIAMS, FRANK HARRIS, JIAOKAI JING, XIAOLIANG ZHENG