Patents by Inventor Akira Hirama

Akira Hirama 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).

  • Negative electrode, battery, battery pack, electronic apparatus, electrically driven vehicle, electrical storage device, and electric power system
    Patent number: 11069887
    Abstract: Provided is a battery including a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a negative electrode active material layer including a negative electrode active material and a binding agent. The negative electrode active material includes a silicon-containing material. The binding agent includes a fluorine-containing resin and a polyacrylic acid metal salt. A total amount of the fluorine-containing resin and the polyacrylic acid metal salt is 10 parts by mass to 30 parts by mass on the basis of 100 parts by mass of the negative electrode active material.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 20, 2021
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akira Hirama, Yusuke Suzuki, Akira Yamaguchi
  • NEGATIVE ELECTRODE, BATTERY, BATTERY PACK, ELECTRONIC APPARATUS, ELECTRICALLY DRIVEN VEHICLE, ELECTRICAL STORAGE DEVICE, AND ELECTRIC POWER SYSTEM
    Publication number: 20180159120
    Abstract: Provided is a battery including a positive electrode, a negative electrode, and an electrolytic solution. The negative electrode includes a negative electrode active material layer including a negative electrode active material and a binding agent. The negative electrode active material includes a silicon-containing material. The binding agent includes a fluorine-containing resin and a polyacrylic acid metal salt. A total amount of the fluorine-containing resin and the polyacrylic acid metal salt is 10 parts by mass to 30 parts by mass on the basis of 100 parts by mass of the negative electrode active material.
    Type: Application
    Filed: April 22, 2016
    Publication date: June 7, 2018
    Inventors: Akira HIRAMA, Yusuke SUZUKI, Akira YAMAGUCHI
  • Flux for a build-up welding
    Patent number: 3932200
    Abstract: A flux particularly adapted to the carrying out of a method for a build-up welding proposed by the present applicant essentially comprises, by weight, 50 to 90% of calcium fluoride and 10 to 40% of alumina with an addition of one or more compounds selected from the group consisting of 0.5 to 7% of iron oxide, 2 to 10% silica, 1 to 17% of manganese oxide and 2 to 10% of chrome oxide.
    Type: Grant
    Filed: January 31, 1974
    Date of Patent: January 13, 1976
    Assignee: Japan Steel Works, Ltd.
    Inventors: Katao Miyano, Shunichi Tomizuka, Takao Adachi, Tomoo Takenouchi, Satoshi Kondo, Akira Hirama, Yasuo Endo