Patents by Inventor Shuji Kumano

Shuji Kumano 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).

  • Frame structure for a seatback of a seat
    Patent number: 6371561
    Abstract: A seatback frame structure (F) for a seatback (2) of a seat (S) comprises a generally rectangular seatback frame (4) and a lower or primary wire frame (9) which has base frame sections (9a) extending from opposite vertical side frame sections (4a) of the rectangular seatback frame (4) at a height of lumbar vertebras, respectively, an upward extending support frame section (91) which extends upward from the base frame sections (9a) and comprises opposite vertical side frame sections (91b) extending from the base sections (4a), respectively, and a horizontal frame section (91a) extending between the opposite vertical side frame sections (91b) at a height of shoulder blades, and an upper or subsidiary wire frame (8) extending between the opposite vertical side frame sections (4a) behind the upward extending support frame section (91). The upward extending support frame section (91) at its upper part is bent backward so as to extend along the backbone of a person P sitting on the seat S.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: April 16, 2002
    Assignee: Mazda Motor Corporation
    Inventors: Yoshiyuki Iwamoto, Shuji Kumano, Kazuhiro Matsuhashi