Patents by Inventor Kei Hashimoto

Kei Hashimoto 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).

  • Publication number: 20250062478
    Abstract: Provided are a spacer and an assembled battery which exhibit good elasticity and pressure resistance, and efficiently transfer heat generated from an adjacent unit battery to a neighboring unit battery in a normal state, and can prevent a chain of damage between unit batteries in an abnormal state in which adjacent unit batteries are damaged and there is a risk that the damage will spread to the entire assembled battery in a chain reaction. The spacer includes a heat conduction control member, a buffer member, and an outer package for housing these members.
    Type: Application
    Filed: August 8, 2024
    Publication date: February 20, 2025
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Tomohiro KAWAI, Kei HASHIMOTO
  • Publication number: 20250023145
    Abstract: In a partitioning member that is accommodated in a battery assembly to partition single cells and in which a liquid is sealed, an opening position of the partitioning member that opens upon receiving heat generated from the single cells is defined at a specific spot at a peripheral edge portion or a surface of the partitioning member. A partitioning member 1 includes a sealing portion 32 formed by sealing edge portions of multilayer sheets 31, 31 each including a resin layer and a metal layer in a band-like manner, a liquid and a heat insulation material 2 are sealed in an internal space surrounded by the sealing portion 32, and a weak seal strength portion 4A protruding from a side facing the internal space to an edge portion side of the sealing portion 32 is provided in the sealing portion 32.
    Type: Application
    Filed: September 30, 2024
    Publication date: January 16, 2025
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Naoya NINOMIYA, Kei HASHIMOTO, Akira MAKI, Shunsuke SATO
  • Publication number: 20240120605
    Abstract: A partition member, which separates objects to be separated from each other, includes a porous sheet, and a water absorbing material provided at least either on a surface of the porous sheet or inside the porous sheet. The partition member that has dimensions of 100 mm×60 mm and has been stored for 24 hours at a temperature of 25° C., a humidity of 40%, and an atmospheric pressure of 1 atm is used as a sample, and a ratio of a water absorption volume when a portion of 10 mm from an lower end of a 60 mm side of the sample is immersed in water for 2 minutes, to a volume of the sample {the water absorption volume (cm3) divided by a volume (cm3) of the partition member} is in a range of 0.1 to 0.9.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 11, 2024
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Tomohiro KAWAI, Kei HASHIMOTO
  • Patent number: 5776650
    Abstract: A charge generation layer and a method of manufacturing a charge generation layer of a highly sensitive organic photoconductor for electrophotography is provided, wherein the charge generation layer is formed by using a dispersion liquid in which an organic pigment or dye is so dispersed as to be fully utilized as a charge generation agent. The organic pigment or dye is dispersed and pulverized in a dispersing solvent, with ball-shaped pulverizing media of about 0.1 to about 0.3 mm in diameter, to an average particle size of from about 0.1 to about 0.3 .mu.m. The ratio of the organic pigment or dye to the solid components of the dispersion liquid is set at about 5 to about 95 weight %. The ball-shaped pulverizing media are removed from the dispersion liquid prior to dip coat formation of the charge generation layer. The total weight of the ball-shaped pulverizing media is set at about 0.25 to about 5 times as heavy as the weight of the dispersion liquid.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: July 7, 1998
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Kei Hashimoto, Nobuyoshi Mori