Patents by Inventor Shigeaki Ohkawara

Shigeaki Ohkawara 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: 4767240
    Abstract: An underwater pile-framed structure comprises a plurality of upright piles 11 arranged in two parallel and spaced rows, reinforcing cages 13 surrounding the piles in peripherally spaced relationship thereto, and precast block stacks 22, 23 connecting together the piles in the two rows and surrounding individual pile-cage assemblies in each row. The piles are driven into the seabed in two spaced and parallel rows, the reinforcing cages are lowered over the piles to predetermined positions, the blocks are stacked over the cages to connect together the pile-cage assemblies in the two rows, and concrete is poured into the annular clearances between the piles and the block stacks.
    Type: Grant
    Filed: October 27, 1986
    Date of Patent: August 30, 1988
    Assignee: Tobishima Corporation
    Inventors: Shigeaki Ohkawara, Yukio Oka