Patents Represented by Attorney Michael J. Buschenhorner

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  • Prism sheet including reflective elements with different curvature surfaces
    Patent number: 7661863
    Abstract: A prism sheet, including a reflective surface having a first side formed by at least a small curvature surface and a surface different from the small curvature surface, and a second side formed by a planar surface.
    Type: Grant
    Filed: November 5, 2002
    Date of Patent: February 16, 2010
    Assignee: International Business Machines Corporation
    Inventors: Sayuri Kohara, Daiju Nakano, Fumiaki Yamada