Patents by Inventor Koichi Akamatsu

Koichi Akamatsu 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).

  • Housing device for SIM card
    Patent number: 6304454
    Abstract: When a housing device for an SIM card 600 is equipped with a mobile telephone 500, a objection 420 pioviel on an operational lever 400 can be seen from a lever hole 511 provided in the housing 510. In this way, it is possible to slidably displace a cover 300 of the housing device of the SIM card 600 which is housed within by moving the projection 420 with a finger or the like. Furthermore an SIM card insertion/detachment aperture 512 provided in said housing 510 is positioned on an extension of a container 120 of a body 120 in the SIM card insertion/detachment device. When the SIM card 600 is inserted from the SIM card insertion/detachment aperture 512, the card may be contained in the container.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: October 16, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koichi Akamatsu, Manabu Hasegawa