Patents by Inventor Tekkan Takasue

Tekkan Takasue 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).

  • Method for forming steel sheet by hot pressing
    Patent number: 9321092
    Abstract: Consumed energy is minimized to reduce running cost. Final formed products of uniform quality are successively obtained. High productivity is provided. A primary forming step of obtaining a primary formed product by plastically working a heated steel sheet with a primary forming die set for a predetermined time period, a secondary forming step of machining the primary formed product with the secondary forming die set for a predetermined time period to obtain a secondary formed product, and a hardening step of allowing a cooling die set placed in a hydraulic press controlled by a servomotor to hold the secondary formed product under pressure for a longer time period than the time period of each of the primary and secondary forming steps to obtain a hardened final formed product are successively performed in sequence. The hardening step is performed independently without coordinating with the primary and secondary forming steps.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: April 26, 2016
    Assignees: MAZDA MOTOR CORPORATION, IMANISHI MANUFACTURING CO., LTD., SEKISOU KANAGATA CO., LTD., KEYLEX CORPORATION
    Inventors: Tekkan Takasue, Kyousou Ishida, Kouji Hironaka, Takuya Yamazaki, Kenichi Hatakeyama, Shinichiro Kurusu, Akihiro Nakashima, Toshiharu Nakashima
  • METHOD FOR FORMING STEEL SHEET BY HOT PRESSING
    Publication number: 20130111966
    Abstract: Consumed energy is minimized to reduce running cost. Final formed products of uniform quality are successively obtained. High productivity is provided. A primary forming step of obtaining a primary formed product by plastically working a heated steel sheet with a primary forming die set for a predetermined time period, a secondary forming step of machining the primary formed product with the secondary forming die set for a predetermined time period to obtain a secondary formed product, and a hardening step of allowing a cooling die set placed in a hydraulic press controlled by a servomotor to hold the secondary formed product under pressure for a longer time period than the time period of each of the primary and secondary forming steps to obtain a hardened final formed product are successively performed in sequence. The hardening step is performed independently without coordinating with the primary and secondary forming steps.
    Type: Application
    Filed: June 21, 2011
    Publication date: May 9, 2013
    Applicants: MAZDA MOTOR CORPORATION, KEYLEX CORPORATION, SEKISOU KANAGATA CO., LTD., IMANISHI MANUFACTURING CO., LTD.
    Inventors: Tekkan Takasue, Kyousou Ishida, Kouji Hironaka, Takuya Yamazaki, Kenichi Hatakeyama, Shinichiro Kurusu, Akihiro Nakashima, Toshiharu Nakashima