Patents by Inventor Tatsuji Tanahashi

Tatsuji Tanahashi 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).

  • High strength porous concrete structure and method of manufacturing the high strength porous concrete structure
    Patent number: 6293065
    Abstract: This invention is intended to provide a high strength porous concrete structure which is preferably applied to a water permeable pavement, a draining pavement, a sound insulating board, a sound-proofing barrier, a sound absorbing block for acoustic, a block for plants, a riverbed block, a water purifying matrix, a gas absorbing matrix, a decorative board for building, a fish reef, a block for fish reef or a block for breeding algae and to provide a method of manufacturing the high strength porous concrete structure.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: September 25, 2001
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Hiroaki Suzuki, Kikuo Tachibana, Tatsuji Tanahashi, Tetsuo Kobayashi