Patents by Inventor Anna Catherine Andrews

Anna Catherine Andrews 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).

  • Method of forming lenticular sheets
    Patent number: 6726858
    Abstract: The present invention provides a method of forming a lenticular sheet for use in forming a substantially ghost-free lenticular image. In a preferred embodiment, the method according to the invention includes providing a means for forming a lenticular sheet and forming the lenticular sheet out of a polymeric material using the means such that the lenticular sheet has an actual thickness (da) that is within about ±15% of an optimal thickness (do) as determined according to the formula: do=(ns−1)r/s(n−1), wherein n is the refractive index of the polymeric material, s is the number of interlaced scenes in the lenticular image, and r is the radius of the lenticles formed using the means.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: April 27, 2004
    Assignee: Ferro Corporation
    Inventor: Anna Catherine Andrews
  • Method of forming lenticular sheets
    Publication number: 20030025224
    Abstract: The present invention provides a method of forming a lenticular sheet for use in forming a substantially ghost-free lenticular image. In a preferred embodiment, the method according to the invention includes providing a means for forming a lenticular sheet and forming the lenticular sheet out of a polymeric material using the means such that the lenticular sheet has an actual thickness (da) that is within about ±15% of an optimal thickness (do) as determined according to the formula: do=(ns−1)r/s(n−1), wherein n is the refractive index of the polymeric material, s is the number of interlaced scenes in the lenticular image, and r is the radius of the lenticles formed using the means.
    Type: Application
    Filed: June 13, 2001
    Publication date: February 6, 2003
    Inventor: Anna Catherine Andrews