Patents by Inventor Mitsugu Shozen

Mitsugu Shozen 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: 8511840
    Abstract: A hexagonal cube corner retroreflective article has a set of a large number of hexagonal cube corner retroreflective elements. In the retroreflective element, at least one reflective lateral face (face a, face b, and/or, face c) is divided into a pair of an upper secondary reflective lateral face (face a1, face b1, and/or face c1) and a lower secondary reflective lateral face (face a2, face b2, and/or face c2) partitioned by a line segment (EF, FD, and/or DE) connected by apexes (E, F, and/or D) constituting that reflective lateral face, in which two secondary reflective lateral faces constituting the pair of the secondary reflective lateral faces are not on the same plane. By these features the retroreflective article provides excellent observational angle characteristics.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: August 20, 2013
    Assignee: Nippon Carbide Industries Co., Inc.
    Inventors: Ikuo Mimura, Keiji Amemiya, Mitsugu Shozen
  • Publication number: 20120081787
    Abstract: There is provided a hexagonal cube corner retroreflective article with excellent observation angle characteristics. The hexagonal cube corner retroreflective article has a set of a large number of hexagonal cube corner retroreflective elements. In the hexagonal cube corner retroreflective element, at least one reflective lateral face (face a, face b, and/or, face c) is divided into a pair of an upper secondary reflective lateral face (face a1, face b1, and/or face c1) and a lower secondary reflective lateral face (face a2, face b2, and/or face c2) partitioned by a line segment (EF, FD, and/or DE) connected by apexes (E, F, and/or D) constituting that reflective lateral face, in which two secondary reflective lateral faces constituting the pair of the secondary reflective lateral faces are not on the same plane.
    Type: Application
    Filed: May 10, 2010
    Publication date: April 5, 2012
    Applicant: NIPPON CARBIDE INDUSTRIES CO., INC.
    Inventors: Ikuo Mimura, Keiji Amemiya, Mitsugu Shozen