Patents by Inventor Takaaki Aoto

Takaaki Aoto 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 having bottomed tubular casing, closure plate fixed to opening of the casing, and valve plate closing hole formed through the closure plate
    Publication number: 20080044724
    Abstract: The aim is to provide a sealed secondary battery with an electrode body that is larger in volume and thus incapacity, without affecting the operability of a valve member and the battery hermeticity. To achieve the aim, the sealed secondary battery includes an electrode body, an external casing, a closure plate, and a valve member. The external casing is of a tubular shape having a bottom and an opening. The closure plate has a hole formed through a central portion thereof and is secured at a peripheral portion to the edge of the opening of the external casing. The valve member has a resilient portion and a plate portion. The plate portion is biased by the resilient portion against the closure plate to close off the hole. The closure plate is smaller in average thickness at portions opposite a main surface of the plate portion than at other portions.
    Type: Application
    Filed: March 30, 2007
    Publication date: February 21, 2008
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Hiroyuki Inoue, Masahiro Hosoda, Takaaki Aoto