Patents by Inventor Akira KOSHIMA

Akira KOSHIMA 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).

  • Carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries
    Patent number: 10381637
    Abstract: Provided is a less hygroscopic carbonaceous material that is obtained from a plant-derived carbonaceous raw material and that, when used as a negative electrode material for a nonaqueous electrolyte secondary battery, allows the battery to exhibit good battery characteristics. Provided is a carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries. This carbonaceous material is a particulate carbonaceous material containing carbonaceous particles. The carbonaceous material has a BET specific surface area of 1 m2/g or more and less than 20 m2/g. Each of the carbonaceous particles of the carbonaceous material has a core and a skin covering the core. The core contains a calcined product of a plant-derived carbonaceous raw material. The skin is made of a material that has higher electron emission ability upon irradiation with an electron beam than a material of the core.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: August 13, 2019
    Assignee: KURARAY CO., LTD.
    Inventors: Akira Koshima, Taketoshi Okuno, Kenichi Koyakumaru, Hideharu Iwasaki, Kenta Aoki, Makoto Imaji, Yasuhiro Tada, Naohiro Sonobe
  • CARBONACEOUS MATERIAL FOR NEGATIVE ELECTRODES OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES
    Publication number: 20160268590
    Abstract: Provided is a less hygroscopic carbonaceous material that is obtained from a plant-derived carbonaceous raw material and that, when used as a negative electrode material for a nonaqueous electrolyte secondary battery, allows the battery to exhibit good battery characteristics. Provided is a carbonaceous material for negative electrodes of nonaqueous electrolyte secondary batteries. This carbonaceous material is a particulate carbonaceous material containing carbonaceous particles. The carbonaceous material has a BET specific surface area of 1 m2/g or more and less than 20 m2/g. Each of the carbonaceous particles of the carbonaceous material has a core and a skin covering the core. The core contains a calcined product of a plant-derived carbonaceous raw material. The skin is made of a material that has higher electron emission ability upon irradiation with an electron beam than a material of the core.
    Type: Application
    Filed: October 10, 2014
    Publication date: September 15, 2016
    Applicants: KURARAY CO., LTD., KURARAY CHEMICAL CO., LTD., KUREHA CORPORATION
    Inventors: Akira KOSHIMA, Taketoshi OKUNO, Kenichi KOYAKUMARU, Hideharu IWASAKI, Kenta AOKI, Makoto IMAJI, Yasuhiro TADA, Naohiro SONOBE