Patents by Inventor Ken Wijaya

Ken Wijaya 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 performance flush toilet
    Patent number: 5983413
    Abstract: A flush toilet bowl comprises a bowl part (1) and a discharge trap (2) formed continuously at the bottom of the bowl part, and the discharge trap (2) further comprises a rising channel (22) extending in the obliquely upward direction from the bottom of the bowl part, a first weir (27) formed at the upper end of the rising channel, a descending channel (23) extending downwardly from the first weir, and a cross-laid channel (24) extending substantially in the horizontal direction from the lower end of the descending channel and having a discharge opening (25) at the end.
    Type: Grant
    Filed: March 5, 1998
    Date of Patent: November 16, 1999
    Assignee: Toto Ltd.
    Inventors: Ryosuke Hayashi, Ken Wijaya, Kinya Arita, Ryoichi Tsukada, Shinji Shibata, Hiroyuki Matsushita