Patents by Inventor Ryujitsu Son

Ryujitsu Son 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).

  • Method of partially replacing shell plate of tower or vessel
    Patent number: 8745833
    Abstract: Provided is a method of partially replacing a shell plate of a tower or a vessel, capable of partially replacing the shell plate of the tower or the vessel in a short construction period at low construction cost. The method of partially replacing a shell plate of a main distillation tower is a method for replacing a cylindrical shell plate portion 2 serving as one portion of the shell plate 1 of a main distillation tower, wherein two facing parts located in the circumferential direction of the cylindrical shell plate portion 2 to be replaced are partially cut off and removed, new partial shell plates 3 are respectively attached to openings 6 generated by the removal, and the removal and the attachment are repeated, so that the cylindrical shell plate portion 2 is replaced. The new partial shell plate 3 is obtained in a case where the cylindrical shell plate portion 2 is substantially equally split into a plurality of sections in the circumferential direction.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: June 10, 2014
    Assignee: Chiyoda Corporation
    Inventors: Ryujitsu Son, Toshihiko Yamaguchi
  • METHOD OF PARTIALLY REPLACING SHELL PLATE OF TOWER OR VESSEL
    Publication number: 20110083312
    Abstract: Provided is a method of partially replacing a shell plate of a tower or a vessel, capable of partially replacing the shell plate of the tower or the vessel in a short construction period at low construction cost. The method of partially replacing a shell plate of a main distillation tower is a method for replacing a cylindrical shell plate portion 2 serving as one portion of the shell plate 1 of a main distillation tower, wherein two facing parts located in the circumferential direction of the cylindrical shell plate portion 2 to be replaced are partially cut off and removed, new partial shell plates 3 are respectively attached to openings 6 generated by the removal, and the removal and the attachment are repeated, so that the cylindrical shell plate portion 2 is replaced. The new partial shell plate 3 is obtained in a case where the cylindrical shell plate portion 2 is substantially equally split into a plurality of sections in the circumferential direction.
    Type: Application
    Filed: March 5, 2009
    Publication date: April 14, 2011
    Applicant: CHIYODA CORPORATION
    Inventors: Ryujitsu Son, Toshihiko Yamaguchi