Patents by Inventor Kazunari Kawashima

Kazunari Kawashima 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).

  • Patent number: 5375830
    Abstract: A slot machine, which is to be started by inserting tokens into a slot 12 and by activating a game start switch 13 to turn and change a plurality of symbols and then stop the symbols in timed relation with activations of respective stop switches 25a, 25b, 25c, comprises a plurality of liquid crystal displays 20a, 20b, 20c situated on a front side of said slot machine, and display controlling means 31 for controlling said liquid crystal displays 20a, 20b, 20c to display a combination of the symbols. The liquid crystal displays can be reduced in depth, without changing the number and size of symbols. The plural liquid crystal displays can give symbols-on-the-drum ambience. Therefore it is possible not only to increase profits with a limited space of installation of slot machines but also to simplify the planning of an amusement parlor to save time and cost. The slot machine has strong appeal to the player.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: December 27, 1994
    Assignee: Kabushiki Kaisha Ace Denken
    Inventors: Takatoshi Takemoto, Kazunari Kawashima
  • Patent number: 5303919
    Abstract: In a slot machine wherein a plurality of indications of patterns are changed by inserting a game medium into a slot and manipulating a game initiation switch, and the respective indications are stopped at stop timings selected by manipulating a stop switch; a slot machine comprising a handle which includes the game initiation switch and the stop switch.
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: April 19, 1994
    Assignee: Kabushiki Kaisha Ace Denken
    Inventors: Takatoshi Takemoto, Kazunari Kawashima