Patents by Inventor Masashi Koseki

Masashi Koseki 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).

  • Powder filling apparatus, powder filling method and process cartridge
    Patent number: 8517064
    Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: August 27, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
  • Powder filling apparatus, powder filling method and process cartridge
    Patent number: 8205646
    Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: June 26, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
  • POWDER FILLING APPARATUS, POWDER FILLING METHOD AND PROCESS CARTRIDGE
    Publication number: 20120006446
    Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
    Type: Application
    Filed: September 22, 2011
    Publication date: January 12, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
  • POWDER FILLING APPARATUS, POWDER FILLING METHOD AND PROCESS CARTRIDGE
    Publication number: 20100326564
    Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
    Type: Application
    Filed: August 2, 2010
    Publication date: December 30, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
  • Powder filling apparatus, powder filling method and process cartridge
    Patent number: 7836921
    Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
    Type: Grant
    Filed: September 26, 2007
    Date of Patent: November 23, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban
  • POWDER FILLING APPARATUS, POWDER FILLING METHOD AND PROCESS CARTRIDGE
    Publication number: 20080017272
    Abstract: A powder filling apparatus and a powder filling method which enable powder to be densely filled in a short period of time is to be provided. This is a powder filling apparatus having a pressure hopper wherein the pressure hopper has a discharger for discharging powder and a gas inlet positioned above at least the surface of a powder layer formed by the powder in the pressure hopper; the powder layer is so formed as to blockade the discharger in the pressure hopper; in the powder filling apparatus, the inside of the pressure hopper is pressurized by leading in gas through the gas inlet in a state in which the discharger is closed, and the powder layer so formed as to blockade the discharger is discharged by opening the discharger after the pressurization thereby to utilize that pressure to load the powder into the filling container.
    Type: Application
    Filed: September 26, 2007
    Publication date: January 24, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Tetsuo Isomura, Manabu Jimba, Masashi Koseki, Kei Jomen, Yutaka Ban