Patents by Inventor Satomi Sabu

Satomi Sabu 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).

  • P-type oxide composition, and method for producing P-type oxide composition
    Patent number: 9396937
    Abstract: To provide an oxide composition, represented by: ZnO1?xSx+? (0<x?0.5, ?>0), where part of O sites of ZnO is substituted with an S atom, and another S atom is provided to an interstitial site by doping, and wherein the oxide composition is p-type.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: July 19, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satomi Sabu, Kenkichiro Kobayashi
  • Charger, ion generator, image forming apparatus, and process cartridge
    Patent number: 9201332
    Abstract: A charger to apply a charge to an object is provided. The charger includes an electron emitter including an electroconductive substrate; and a layer of n-type hexagonal boron nitride codoped with magnesium and oxygen atoms, which is located on the electroconductive substrate, wherein the concentration of oxygen atoms in the layer of n-type hexagonal boron nitride codoped with magnesium and oxygen atoms is higher than the concentration of magnesium atoms in the layer.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: December 1, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Satomi Sabu, Shinji Ohtani
  • CHARGER, ION GENERATOR, IMAGE FORMING APPARATUS, AND PROCESS CARTRIDGE
    Publication number: 20150016842
    Abstract: A charger to apply a charge to an object is provided. The charger includes an electron emitter including an electroconductive substrate; and a layer of n-type hexagonal boron nitride codoped with magnesium and oxygen atoms, which is located on the electroconductive substrate, wherein the concentration of oxygen atoms in the layer of n-type hexagonal boron nitride codoped with magnesium and oxygen atoms is higher than the concentration of magnesium atoms in the layer.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 15, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Satomi SABU, Shinji OHTANI
  • P-TYPE OXIDE COMPOSITION, AND METHOD FOR PRODUCING P-TYPE OXIDE COMPOSITION
    Publication number: 20140252344
    Abstract: To provide an oxide composition, represented by: ZnO1-xSx+a (0<x?0.5, a>0), where part of O sites of ZnO is substituted with an S atom, and another S atom is provided to an interstitial site by doping, and wherein the oxide composition is p-type.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 11, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Satomi Sabu, Kenkichiro Kobayashi
  • POLYMER PRODUCT, POLYMER COMPACT, POLYMER COMPACT FOR MEDICAL USE, TONER, AND POLYMER COMPOSITION
    Publication number: 20140200326
    Abstract: To provide a polymer product, which is substantially free from an organic solvent and a metal atom, and has a number average molecular weight of 12,000 or greater.
    Type: Application
    Filed: August 6, 2012
    Publication date: July 17, 2014
    Inventors: Yoshitaka Yamauchi, Chiaki Tanaka, Taichi Nemoto, Kazumi Suzuki, Keiko Osaka, Shinichi Wakamatsu, Satomi Sabu