Patents Assigned to Partex Concrete Oy AB
  • 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