Patents by Inventor Toshitaka Matuoka

Toshitaka Matuoka 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).

  • Precast concrete panel for a composite floor
    Patent number: 5317854
    Abstract: A precast concrete panel for a composite floor has a number of concavities provided in a surface thereof. Each concavity is in the form of a groove and includes alternately formed shallow and deep sections which are adjacent each other. The concavities extend in a transverse direction of the concrete panel and are spaced apart from each other in a longitudinal direction of the panel.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: June 7, 1994
    Assignees: Obayashi Corporation, Partex Concrete Oy AB, Eastern Partek PTE Ltd.
    Inventors: Minoru Yoshida, Toshitaka Matuoka, Takeharu Serizawa