Patents by Inventor Kazunori Koishi

Kazunori Koishi 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).

  • Upward-type filtering apparatus characterized in laminating method of filtering material
    Patent number: 8864989
    Abstract: [Object] It is an object of the present invention to provide a filtering apparatus capable of efficiently filtering a large volume of to-be filtered water, in which its filtering material is less prone to be clogged, and even if the filtering material is clogged, it is possible to wash the filtering material. [Solving Means] An upward-type filtering apparatus (1) includes a pressure container (2) and a filtering material (3) made of gravels, filtering sands or particles.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: October 21, 2014
    Inventor: Kazunori Koishi
  • UPWARD-TYPE FILTERING APPARATUS CHARACTERIZED IN LAMINATING METHOD OF FILTERING MATERIAL
    Publication number: 20120138524
    Abstract: [Object] It is an object of the present invention to provide a filtering apparatus capable of efficiently filtering a large volume of to-be filtered water, in which its filtering material is less prone to be clogged, and even if the filtering material is clogged, it is possible to wash the filtering material. [Solving Means] An upward-type filtering apparatus (1) includes a pressure container (2) and a filtering material (3) made of gravels, filtering sands or particles.
    Type: Application
    Filed: April 11, 2011
    Publication date: June 7, 2012
    Inventor: Kazunori Koishi
  • Operation device for crane
    Patent number: D916418
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: April 13, 2021
    Assignee: TADANO LTD.
    Inventors: Nanami Ikeuchi, Kazue Inoshita, Makoto Tsuji, Kazunori Koishi, Mami Nagata
  • Operation device for crane
    Patent number: D953682
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: May 31, 2022
    Assignee: TADANO LTD.
    Inventors: Nanami Ikeuchi, Kazue Inoshita, Makoto Tsuji, Kazunori Koishi, Mami Nagata