Patents by Inventor Yukio Harma

Yukio Harma 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).

  • SEALED SECONDARY BATTERY, AND METHOD FOR MANUFACTURING THE BATTERY
    Publication number: 20100247992
    Abstract: An electrode group 4 formed by stacking or winding a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed therebetween, is housed in a battery case 5. An opening of the battery case 5 is sealed with a sealing plate 10. A lead 11 extending from one of the positive and negative electrode plates in the electrode group 4 is laser-welded to the sealing plate 10 by application of a laser beam 12 having a spot diameter smaller than a thickness of the lead 11.
    Type: Application
    Filed: June 23, 2009
    Publication date: September 30, 2010
    Inventors: Kyosuke Miyata, Takahiro Fukuoka, Yukio Harma, Koji Funami, Seiji Kumazawa