Patents by Inventor Etsuji Yamamoto

Etsuji Yamamoto 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).

  • Arrangement of heat transfer tubes in a heating furnace
    Patent number: 4002149
    Abstract: Arrangement of heat transfer tubes in a heating furnace in which the heat transfer tube is divided into several paths in the radiant heat transfer zone and these branched tubes are arranged in juxtaposition and alternative relation in each row and divided into a plurality of groups in a cycle of the alternation, and burners are provided in front of each tube group.
    Type: Grant
    Filed: August 28, 1975
    Date of Patent: January 11, 1977
    Assignees: Mitsui Shipbuilding and Engineering Co., Ltd., Mitsui Petrochemical Industries, Ltd.
    Inventors: Etsuji Yamamoto, Noriaki Nakase