Patents by Inventor Kiyoteru Enomoto

Kiyoteru Enomoto 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).

  • Process of producing manganese dioxide for a lithium primary battery
    Patent number: 6821678
    Abstract: Manganese dioxide for lithium primary batteries which is obtained by soda neutralization and heat treatment of electrolytic manganese dioxide and has a sodium content of 0.05 to 0.2% by weight and a process for producing the same.
    Type: Grant
    Filed: January 3, 2001
    Date of Patent: November 23, 2004
    Assignee: Mitsui Mining & Smelting Company, Ltd.
    Inventors: Hiroshi Sumida, Kiyoteru Enomoto, Masaki Sato
  • Manganese dioxide for lithium primary battery and process for producing the same
    Publication number: 20010024752
    Abstract: Manganese dioxide for lithium primary batteries which is obtained by soda neutralization and heat treatment of electrolytic manganese dioxide and has a sodium content of 0.05 to 0.2% by weight and a process for producing the same.
    Type: Application
    Filed: January 3, 2001
    Publication date: September 27, 2001
    Applicant: Mitsui Mining & Smelting Company, Ltd.,
    Inventors: Hiroshi Sumida, Kiyoteru Enomoto, Masaki Sato
  • Electrolytic manganese dioxide, process for preparing the same, and manganese dry cell
    Patent number: 5866278
    Abstract: An electrolytic manganese dioxide having a composition of MnOx, wherein X is 1.90 to 1.96, an adhesive moisture content of not less than 1.5% by weight as measured according to the procedure specified in JIS, and a content of bound water, eliminative in the temperature range of 120.degree. to 400.degree. C., of not less than 3.0% by weight as measured by gravimetry, a process for preparing the same, and a manganese dry cell comprising a cathode mix comprised of a mixing of the electrolytic manganese dioxide with a conductive acetylene black, preferably a conductive acetylene black having a BET specific surface area of 70 to 2.50 m.sup.2 /g, and an electrolyte composed mainly of zinc chloride and/or ammonium chloride. In the process of preparing the electrolytic manganese dioxide, after electrolysis and during or after neutralization, the manganese dioxide is heated in an aqueous solution at 50.degree. to 100.degree. C. for 12 to 48 hours in the presence of an alkaline ammonium compound.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: February 2, 1999
    Assignees: Mitsui Mining & Smelting Co., Ltd., Matsushita Electric
    Inventors: Hiroshi Sumida, Takuya Inoue, Kiyoteru Enomoto, Hajime Murakami, Michiko Inui, Yoshihiro Sakurai