Patents by Inventor Tosio Sata

Tosio Sata 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 of manufacturing a magnetic disk cartridge
    Patent number: 5804124
    Abstract: A magnetic disk cartridge which is free from the difficulty associated with the color of the cartridge being nonuniform in the area of weld lines which are likely to be formed in the injection molding of a colored synthetic resin, thus impairing the external appearance of the cartridge, and to a method of manufacturing the magnetic disk cartridge. In accordance with one embodiment of the invention, a magnetic disk cartridge is provided which is formed by injection molding a molten resin prepared by mixing master batch pellets of SAN resin at least 100 gm/10 min in melt flow rate and natural pellets of ABS resin at least 25 gm/10 min in melt flow rate in a ratio of 1:50 to 1:15 by weight.
    Type: Grant
    Filed: January 28, 1994
    Date of Patent: September 8, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tosio Sata
  • Magnetic disk cartridge and method of manufacturing same
    Patent number: 5307229
    Abstract: A magnetic disk cartridge which is free from the difficulty associated with the color of the cartridge being nonuniform in the area of weld lines which are likely to be formed in the injection molding of a colored synthetic resin, thus impairing the external appearance of the cartridge, and to a method of manufacturing the magnetic disk cartridge. In accordance with one embodiment of the invention, a magnetic disk cartridge is provided which is formed by injection molding a molten resin prepared by mixing master batch pellets of SAN resin at least 100 gm/10 min in melt flow rate and natural pellets of ABS resin at least 25 gm/10 min in melt flow rate in a ratio of 1:50 to 1:15 by weight.
    Type: Grant
    Filed: June 20, 1991
    Date of Patent: April 26, 1994
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Tosio Sata