Patents by Inventor Nobuhiro Katase

Nobuhiro Katase 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).

  • Disc apparatus for accepting a disc having at least one portion for preventing misinsertion
    Patent number: 5859829
    Abstract: An optical disc cartridge provided with a mechanism for preventing incorrect insertion of a cartridge. A cut-off portion is provided at a head and side portion at an inserting side of, for example, a 3.5" erasable optical disc cartridge. The cut-off portion is located at an side opposite to a corresponding cut-off portion used in a 3.5" (86 mm) floppy disc cartridge. A stopper is provided in a cartridge insertion portion of the reproducing apparatus to prevent incorrect insertion of the cartridge and is located to correspond to the location of the cartridge cut-off portion. A depression or the like is provided at a front end of the cartridge and at a portion symmetrical about an axis to an edge of the shutter where the shutter opening lever normally strikes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: January 12, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Otsuka, Nobuhiro Katase, Tohru Sasaki
  • Cartridge for preventing misinsertion
    Patent number: 5831967
    Abstract: An optical disc cartridge provided with a mechanism for preventing incorrect insertion of a cartridge. A cut-off portion is provided at a head and side portion at an inserting side of, for example, a 3.5" erasable optical disc cartridge. The cut-off portion is located at an side opposite to a corresponding cut-off portion used in a 3.5" (86 mm) floppy disc cartridge. A stopper is provided in a cartridge insertion portion of the reproducing apparatus to prevent incorrect insertion of the cartridge and is located to correspond to the location of the cartridge cut-off portion. A depression or the like is provided at a front end of the cartridge and at a portion symmetrical about an axis to an edge of the shutter where the shutter opening lever normally strikes.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 3, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Otsuka, Nobuhiro Katase, Tohru Sasaki
  • Disc cartridge for receiving a disk and mechanism for preventing an incorrect insertion of a cartridge
    Patent number: 5612940
    Abstract: An optical disc cartridge provided with a mechanism for preventing incorrect insertion of a cartridge. A cut-off portion is provided at a head and side portion at an inserting side of, for example, a 3.5" erasable optical disc cartridge. The cut-off portion is located at an side opposite to a corresponding cut-off portion used in a 3.5" (86 mm) floppy disc cartridge. A stopper is provided in a cartridge insertion portion of the reproducing apparatus to prevent incorrect insertion of the cartridge and is located to correspond to the location of the cartridge cut-off portion. A depression or the like is provided at a front end of the cartridge and at a portion symmetrical about an axis to an edge of the shutter where the shutter opening lever normally strikes.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: March 18, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Otsuka, Nobuhiro Katase, Tohru Sasaki
  • Optical disc cartridge and mechanism for preventing an incorrect insertion of a cartridge
    Patent number: 5606547
    Abstract: An optical disc cartridge provided with a mechanism for preventing incorrect insertion of a cartridge. A cut-off portion is provided at a head and side portion at an inserting side of, for example, a 3.5" erasable optical disc cartridge. The cut-off portion is located at an side opposite to a corresponding cut-off portion used in a 3.5" (86 mm) floppy disc cartridge. A stopper is provided in a cartridge insertion portion of the reproducing apparatus to prevent incorrect insertion of the cartridge and is located to correspond to the location of the cartridge cut-off portion. A depression or the like is provided at a front end of the cartridge and at a portion symmetrical about an axis to an edge of the shutter where the shutter opening lever normally strikes.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: February 25, 1997
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Otsuka, Nobuhiro Katase, Tohru Sasaki
  • Optical disc cartridge and mechanism for preventing an incorrect insertion of a cartridge
    Patent number: 5297133
    Abstract: An optical disc cartridge provided with a mechanism for preventing incorrect insertion of a cartridge. A cut-off portion is provided at a head and side portion at an inserting side of, for example, a 3.5" erasable optical disc cartridge. The cut-off portion is located at an side opposite to a corresponding cut-off portion used in a 3.5" (86 mm) floppy disc cartridge. A stopper is provided in a cartridge insertion portion of the reproducing apparatus to prevent incorrect insertion of the cartridge and is located to correspond to the location of the cartridge cut-off portion. A depression or the like is provided at a front end of the cartridge at a portion symmetrical about an axis to an edge of a shutter of the cartridge where a shutter opening lever normally strikes when the cartridge is inserted into the cartridge insertion portion.
    Type: Grant
    Filed: July 27, 1988
    Date of Patent: March 22, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Yasuo Otsuka, Nobuhiro Katase, Tohru Sasaki