Patents by Inventor Masanori Sawano

Masanori Sawano 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).

  • Spinel type lithium-mangenese oxide material, process for preparing the same and use thereof
    Patent number: 5807646
    Abstract: A novel lithium-manganese oxide composition suitable for use in lithium secondary batteries as an active material for positive electrodes, said oxide having a spinel type crystal structure, an Li:Mn molar ratio of 0.9-1.10:2.00, a mean Mn oxidation number of 3.40-3.60 valencies, and a BET specific surface area of at least 1 m.sup.2 /g, substantially all the primary particles of said oxide being less than 1 .mu.m; a process for preparing such an oxide and a lithium secondary battery containing such an oxide are also disclosed.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: September 15, 1998
    Assignee: Tosoh Corporation
    Inventors: Eiichi Iwata, Ken-ichi Takahashi, Setsuo Yoshida, Masaki Okada, Masanori Sawano