Patents by Inventor Katsuichi Irifune

Katsuichi Irifune 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).

  • Siphon-jet flush water supply system for toilet stool
    Patent number: 5502845
    Abstract: A flush toilet stool includes a toilet bowl and a trap drainage passage connected to the toilet bowl. The toilet bowl has a water jet hole defined in a bottom region thereof and opening toward the trap drainage passage. A pressurizing unit such as a water pump is coupled to the water jet hole for drawing water under lower pressure directly from an external water supply and expelling the water under higher pressure through the water jet hole toward the trap drainage passage to develop a siphon flow to discharge sewage from the toilet bowl through the trap drainage passage.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: April 2, 1996
    Assignee: Toto Ltd.
    Inventors: Ryosuke Hayashi, Katsuichi Irifune, Yoshiki Ohta, Takashi Yoshioka, Osamu Tsutsui, Atsuo Makita, Ryouichi Tsukada, Shinji Shibata, Noboru Shinbara, Takayuki Ootani, Nobuichiro Ohsato