Patents by Inventor Kousuke OURA

Kousuke OURA 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).

  • Electroconductive roll
    Patent number: 11762306
    Abstract: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The arithmetic mean peak curvature Spc of a surface of the surface layer is equal to or greater than 1,880 (1/mm), and is equal to or less than 14,024 (1/mm).
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: September 19, 2023
    Inventors: Kousuke Oura, Shogo Suzuki, Satoshi Fukuoka, Kenji Sasaki
  • Charging roll
    Patent number: 11650514
    Abstract: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The surface area of the surface layer per unit projected area is equal to or greater than 1.255, and is equal to or less than 6.635.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: May 16, 2023
    Inventors: Kousuke Oura, Shogo Suzuki, Satoshi Fukuoka, Kenji Sasaki
  • Electroconductive roll
    Patent number: 11194263
    Abstract: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The density of peaks Spd of the surface of the surface layer is equal to or greater than 93,406 (1/mm2), and is equal to or less than 153,027 (1/mm2).
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: December 7, 2021
    Inventors: Kousuke Oura, Shogo Suzuki, Satoshi Fukuoka, Kenji Sasaki
  • ELECTROCONDUCTIVE ROLL
    Publication number: 20210311407
    Abstract: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The surface area of the surface layer per unit projected area is equal to or greater than 1.255, and is equal to or less than 6.635.
    Type: Application
    Filed: August 29, 2019
    Publication date: October 7, 2021
    Inventors: Kousuke OURA, Shogo SUZUKI, Satoshi FUKUOKA, Kenji SASAKI
  • ELECTROCONDUCTIVE ROLL
    Publication number: 20210302858
    Abstract: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The density of peaks Spd of the surface of the surface layer is equal to or greater than 93,406 (1/mm2), and is equal to or less than 153,027 (1/mm2).
    Type: Application
    Filed: August 29, 2019
    Publication date: September 30, 2021
    Inventors: Kousuke OURA, Shogo SUZUKI, Satoshi FUKUOKA, Kenji SASAKI
  • ELECTROCONDUCTIVE ROLL
    Publication number: 20210255556
    Abstract: An electroconductive roll includes a core member, a rubber base material disposed around the core member, and a surface layer disposed around the rubber base material. The arithmetic mean peak curvature Spc of a surface of the surface layer is equal to or greater than 1,880 (1/mm), and is equal to or less than 14,024 (1/mm).
    Type: Application
    Filed: August 29, 2019
    Publication date: August 19, 2021
    Inventors: Kousuke OURA, Shogo SUZUKI, Satoshi FUKUOKA, Kenji SASAKI
  • Conductive roll
    Patent number: 10268133
    Abstract: This conductive roll includes: at least one elastic layer 12 including primarily a conductive rubber body and provided along the outer periphery of a core 11; and a coating layer 14 provided along the outer periphery of the elastic layer 12. The conductive roll satisfies the following expressions: circumference Sm1?135 ?m and circumference Sm1<circumference Sm2 wherein circumference Sm1 represents an average interval Sm of irregularities along the circumferential direction of the elastic layer 12, and circumference Sm2 represents an average interval Sm of irregularities along the circumferential direction of the coating layer 14.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: April 23, 2019
    Assignees: NOK CORPORATION, SYNZTEC CO., LTD., NOK KLUEBER CO., LTD.
    Inventors: Kousuke Oura, Hiroshi Ogura, Masaki Tahara
  • CONDUCTIVE ROLL
    Publication number: 20190025727
    Abstract: This conductive roll includes: at least one elastic layer 12 including primarily a conductive rubber body and provided along the outer periphery of a core 11; and a coating layer 14 provided along the outer periphery of the elastic layer 12. The conductive roll satisfies the following expressions: circumference Sm1?135 ?m and circumference Sm1<circumference Sm2 wherein circumference Sm1 represents an average interval Sm of irregularities along the circumferential direction of the elastic layer 12, and circumference Sm2 represents an average interval Sm of irregularities along the circumferential direction of the coating layer 14.
    Type: Application
    Filed: August 1, 2017
    Publication date: January 24, 2019
    Applicants: NOK CORPORATION, SYNZTEC CO., LTD., NOK KLUEBER CO., LTD.
    Inventors: Kousuke OURA, Hiroshi OGURA, Masaki TAHARA