Patents by Inventor Lutz L asker

Lutz L asker 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).

  • Patent number: 5543267
    Abstract: Flat materials made from a polymer with a backbone and side groups branching off the backbone (side group polymer), which polymer has the following structural features (1) to (3):(1) the side group polymer contains at least one photoinducibly configuration-changing side group;(2) the side group polymer contains at least one permanently conformationally anisotropic side group with high anisotropy of molecular polarisability which differs from (1);(3) the side group polymer contains flexible spacer groups between the backbone and the side groups (1) and (2);wherein the flat material in the glassy state of the side group polymers is optically isotropic, transparent, non-scattering and amorphous before irradiation and, after irradiation, is transparent and durably birefringent and dichroic due to a reversible, photoinduced alignment of the side groups (1) and (2) in the glassy state, may be purposefully modified in terms of their optical properties by the action of light.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: August 6, 1996
    Assignee: Agfa-Gevaert AG
    Inventors: Joachim Stumpe, Valery Shibaev, Sergei Kostromin, Sergei Ivanov, Thomas Fischer, Lutz L asker, Ralf Ruhmann, Uwe Claussen