Patents by Inventor Seiya Yamashita

Seiya Yamashita 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).

  • Anti-rolling structure for box-type floating body
    Patent number: 6487982
    Abstract: A floating body 1, which is substantially rectangular when seen from above, is provided with at least a protrusion 3 on at least either of sides in a transverse direction 5 of the floating body 1 at a level lower than a waterline 4.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: December 3, 2002
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Toru Takahashi, Yuji Awashima, Seiya Yamashita
  • Anti-rolling structure for box-type floating body
    Publication number: 20020083877
    Abstract: A floating body 1, which is substantially rectangular when seen from above, is provided with at least a protrusion 3 on at least either of sides in a transverse direction 5 of the floating body 1 at a level lower than a waterline 4.
    Type: Application
    Filed: September 26, 2001
    Publication date: July 4, 2002
    Applicant: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Toru Takahashi, Yuji Awashima, Seiya Yamashita
  • Floating structure
    Patent number: 4987846
    Abstract: A column belt is between upper and lower reduced-diameter columns and is only in the vicinity of and across the water surface so that the heave resonant period is increased which is due to the effect of the shape of the column belt.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: January 29, 1991
    Assignee: Ishikawajima-Harima Jukogyo Kabushiki Kaisha
    Inventors: Seiya Yamashita, Haruo Sasaki