Patents by Inventor Akihisa Kusayanagi

Akihisa Kusayanagi 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).

  • Disk cartridge
    Patent number: 7023662
    Abstract: A disk cartridge comprising a flat housing and a recording disk medium. The flat housing is constructed of upper and lower metal shells, and the recording disk medium is rotatably enclosed within the housing. The housing is assembled by mechanically linking the circumferential edge portions of the upper and lower shells together.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: April 4, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Fumihito Imai, Hideaki Shiga, Akihisa Kusayanagi
  • Drive device
    Publication number: 20040212927
    Abstract: To improve the reliability of an engagement and ejection mechanism of a drive device having an accommodating portion for accommodating therein a magnetic disk.
    Type: Application
    Filed: March 10, 2004
    Publication date: October 28, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Harumi Aoishi, Akihisa Kusayanagi
  • Disk cartridge
    Publication number: 20040047074
    Abstract: A disk cartridge comprising a flat housing and a recording disk medium. The flat housing is constructed of upper and lower metal shells, and the recording disk medium is rotatably enclosed within the housing. The housing is assembled by mechanically linking the circumferential edge portions of the upper and lower shells together.
    Type: Application
    Filed: September 2, 2003
    Publication date: March 11, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Fumihito Imai, Hideaki Shiga, Akihisa Kusayanagi
  • Recording medium cartridge
    Publication number: 20030197977
    Abstract: A recording medium cartridge comprising a housing that accommodates a recording medium. By accommodating a different recording medium with a different recording capacity within the housing of approximately the same shape, recording medium cartridges of different generations can be constituted. An external surface of the housing is provided with an identification part, which differs in shape from generation to generation, for discriminating between the different generations.
    Type: Application
    Filed: April 21, 2003
    Publication date: October 23, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Harumi Aoishi, Fumihito Imai, Hideaki Shiga, Akihisa Kusayanagi, Kiyoo Morita