Patents by Inventor Andrey Karasev

Andrey Karasev 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).

  • Publication number: 20130121870
    Abstract: A ferritic stainless steel comprising Cr: max 24 mass %, Ti: 200 to 1000 mass ppm, Zr: at least 200 mass ppm, whereby the Zr/Ti ratio is greater than 0.3, O: 10 to 150 mass ppm, N: at least 70 mass ppm, whereby the N/O ratio is greater than 1.5, C: max. 0.03 mass %, and balance Fe and residual elements.
    Type: Application
    Filed: April 26, 2011
    Publication date: May 16, 2013
    Inventors: Keiji Nakajima, Jesper Janis, Andrey Karasev, Pär Jönsson, Stefan Jonsson
  • Patent number: 6740472
    Abstract: An authenticatable product comprising a non-opaque latent image layer of anisotropic polymer material having background optical properties with a given preferred direction of anisotropy and a given proportion of crystallinity, the latent image layer being treated so as to include: a first localized modification in the latent image layer being associated with a first latent image; and a second localized modification in the latent image layer being associated with a second latent image such that, when viewed directly, the first latent image and the second latent image are indistinguishable from the remainder of the latent image layer and, under polarized visualization, a maximum contrast between the first latent image and the remainder of the latent image layer is actualized at a different orientation of polarized visualization than a maximum contrast between the second latent image and the remainder of the latent image layer.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: May 25, 2004
    Assignee: Latent Image Technologies Ltd.
    Inventor: Andrey Karasev
  • Publication number: 20030224257
    Abstract: An authenticatable product comprising a non-opaque latent image layer of anisotropic polymer material having background optical properties with a given preferred direction of anisotropy and a given proportion of crystallinity, the latent image layer being treated so as to include: a first localized modification in the latent image layer being associated with a first latent image; and a second localized modification in the latent image layer being associated with a second latent image such that, when viewed directly, the first latent image and the second latent image are indistinguishable from the remainder of the latent image layer and, under polarized visualization, a maximum contrast between the first latent image and the remainder of the latent image layer is actualized at a different orientation of polarized visualization than a maximum contrast between the second latent image and the remainder of the latent image layer.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 4, 2003
    Applicant: Latent Image Technology Ltd.
    Inventor: Andrey Karasev