Patents by Inventor Tatsunobu Nakai

Tatsunobu Nakai 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).

  • Operation indicator device and panel unit
    Patent number: 6525667
    Abstract: Panel units (24a to 24d) continuing an operation indicating panel (20) each have a rectangular surface S with length and width each being substantially an integral multiple of a predetermined reference size (L). The panel units (24a and 24d) are placed so that their surfaces S may be adjacent to one another. A whole surface (AS) consisting of the surfaces S of all the panel units (24a to 24d) is formed in a rectangular shape with length and width each being substantially an integral multiple of the predetermined reference size (L). The arrangement and the like of the panel units (24a to 24d) can be easily changed.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: February 25, 2003
    Assignee: IDEC Izumi Corporation
    Inventors: Toshihiro Fujita, Yoshitaka Tsuji, Tatsunobu Nakai, Yoshihide Nakano, Yosio Sekino, Masaaki Fujii, Toshiyuki Kasama, Takao Hosorogi, Masao Dohi, Shinichi Ishino, Shigoto Ogino, Tomonori Nishiki, Takehiko Tajika, Masahiko Kawakami, Yuuhei Sugai
  • Programmable logic controller
    Patent number: D368252
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: March 26, 1996
    Assignee: Idec Izumi Corporation
    Inventor: Tatsunobu Nakai