Patents by Inventor Hiroshi Ukai

Hiroshi Ukai 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).

  • Publication number: 20230314980
    Abstract: In a charging roll, grooves regularly defining spirals are formed on an elastic body layer, with a groove width of 4 ?m to 280 ?m and a groove depth of 2 ?m to 30 ?m. On an outer peripheral surface of the elastic body layer, an area ratio between an area of a bottom surface of the groove and an area of a plane part is 0.3 to 2.4. The surface layer includes a binder polymer and a roughness forming particle. The roughness forming particle is arranged on the plane part and the groove. A surface roughness of the surface layer on the groove is 2 ?m to 16 ?m. A surface roughness of the entire surface layer is 5 ?m to 26 ?m. A thickness of the binder polymer covering the roughness forming particle on the groove is greater than that on the plane part.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Yoshihiro SAITO, Hiroshi UKAI, Masanori ISHIDA
  • Patent number: 11422660
    Abstract: A position indicated by a user with a finger or a stylus can be detected even in a case where an edge of a hand on a little finger side or a wrist touches a touch panel. An input device acquires information indicating a plurality of points on a touch panel affected by a user's touch, including the touch with a finger or a stylus, calculates distances between a reference position and at least some of the plurality of points, the reference position indicating a position touched by the user on the touch panel other than with the finger or the stylus, selects one or more points affected by the touch with the finger or the stylus from the at least some of the plurality of points based on the calculated distances, and acquires coordinates of a position indicated by the user based on the selected point.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: August 23, 2022
    Assignee: RAKUTEN GROUP, INC.
    Inventor: Hiroshi Ukai
  • Patent number: 11106151
    Abstract: In a charging roll for electrophotographic equipment, an outer surface layer of an elastic layer includes a binder resin, large-diameter particles having an average particle diameter of 15-50 ?m, and small-diameter particles having an average particle diameter of 3-15 ?m, a difference in average particle diameter between the large-diameter particles and the small-diameter particles is 10-35 ?m, the small-diameter particles are arranged in one layer in the surface layer, the average distance between the small-diameter particles is not more than 1.2 times the average particle diameter of the small-diameter particles, the thickness a of the binder resin covering the large-diameter particles is within the range of 1.5-3.5 ?m, the thickness b of the binder resin covering the small-diameter particles is 3.0-6.0 ?m, and the thickness b is larger than the thickness a.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: August 31, 2021
    Assignee: Sumitomo Riko Company Limited
    Inventors: Yoshihiro Saito, Hiroshi Ukai
  • Publication number: 20210157252
    Abstract: In a charging roll for electrophotographic equipment, an outer surface layer of an elastic layer includes a binder resin, large-diameter particles having an average particle diameter of 15-50 ?m, and small-diameter particles having an average particle diameter of 3-15 ?m, a difference in average particle diameter between the large-diameter particles and the small-diameter particles is 10-35 ?m, the small-diameter particles are arranged in one layer in the surface layer, the average distance between the small-diameter particles is not more than 1.2 times the average particle diameter of the small-diameter particles, the thickness a of the binder resin covering the large-diameter particles is within the range of 1.5-3.5 ?m, the thickness b of the binder resin covering the small-diameter particles is 3.0-6.0 ?m, and the thickness b is larger than the thickness a.
    Type: Application
    Filed: February 3, 2021
    Publication date: May 27, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Yoshihiro SAITO, Hiroshi UKAI
  • Publication number: 20200387258
    Abstract: A position indicated by a user with a finger or a stylus can be detected even in a case where an edge of a hand on a little finger side or a wrist touches a touch panel. An input device acquires information indicating a plurality of points on a touch panel affected by a user's touch, including the touch with a finger or a stylus, calculates distances between a reference position and at least some of the plurality of points, the reference position indicating a position touched by the user on the touch panel other than with the finger or the stylus, selects one or more points affected by the touch with the finger or the stylus from the at least some of the plurality of points based on the calculated distances, and acquires coordinates of a position indicated by the user based on the selected point.
    Type: Application
    Filed: August 25, 2020
    Publication date: December 10, 2020
    Inventor: Hiroshi UKAI
  • Patent number: 10788917
    Abstract: A position indicated by a user with a finger or a stylus can be detected even in a case where an edge of a hand on a little finger side or a wrist touches a touch panel. An input device acquires information indicating a plurality of points on a touch panel affected by a user's touch, including the touch with a finger or a stylus, calculates distances between a reference position and at least some of the plurality of points, the reference position indicating a position touched by the user on the touch panel other than with the finger or the stylus, selects one or more points affected by the touch with the finger or the stylus from the at least some of the plurality of points based on the calculated distances, and acquires coordinates of a position indicated by the user based on the selected point.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: September 29, 2020
    Assignee: RAKUTEN, INC.
    Inventor: Hiroshi Ukai
  • Patent number: 10691038
    Abstract: There is provided a conductive roller for electrophotographic equipment in which a shaft made of core metal has excellent rust resistance. The conductive roller includes a shaft made of core metal, a protective layer formed on the outer periphery of the shaft, and a conductive rubber elastic layer formed on the outer periphery of the protective layer. In a conductive roller for electrophotographic equipment, the conductive rubber elastic layer contains a rubber containing halogen atoms, and the protective layer is formed of a crosslinked material of a composition containing a material obtained by melting and mixing the following components (a) to (c): (a) a polyfunctional maleimide compound having two or more maleimide groups; (b) a benzoxazine compound; and (c) an epoxy resin.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: June 23, 2020
    Assignee: Sumitomo Riko Company Limited
    Inventors: Takahisa Kose, Shigeki Kanda, Yasuyuki Hayasaki, Hiroshi Ukai
  • Patent number: 10642929
    Abstract: An information display device that includes circuitry that receives specification of an annotation position indicating a position of an annotation in display information to be displayed on a display; when specification of the annotation position is received, generates an annotation code corresponding to the annotation position, and stores the generated annotation code in association with the annotation position into a memory; outputs the generated annotation code in a format recognizable to an operator; receives input of annotation information containing at least the annotation code and representing the annotation; and performs control so that, when the annotation code contained in the received annotation information matches the annotation code stored in the memory, the annotation information is output at the position in the display information indicated by the annotation position corresponding to the annotation code.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: May 5, 2020
    Assignee: RAKUTEN, Inc.
    Inventor: Hiroshi Ukai
  • Publication number: 20200073274
    Abstract: There is provided a conductive roller for electrophotographic equipment in which a shaft made of core metal has excellent rust resistance. The conductive roller includes a shaft made of core metal, a protective layer formed on the outer periphery of the shaft, and a conductive rubber elastic layer formed on the outer periphery of the protective layer. In a conductive roller for electrophotographic equipment, the conductive rubber elastic layer contains a rubber containing halogen atoms, and the protective layer is formed of a crosslinked material of a composition containing a material obtained by melting and mixing the following components (a) to (c): (a) a polyfunctional maleimide compound having two or more maleimide groups; (b) a benzoxazine compound; and (c) an epoxy resin.
    Type: Application
    Filed: November 7, 2019
    Publication date: March 5, 2020
    Applicant: Sumitomo Riko Company Limited
    Inventors: Takahisa KOSE, Shigeki KANDA, Yasuyuki HAYASAKI, Hiroshi UKAI
  • Patent number: 10430475
    Abstract: Under a preliminary environment, test searches with a current algorithm and a new algorithm are performed. Based on evaluation values related to rankings of the searches calculated based on these results, a first evaluation value for the current algorithm and a second evaluation value for the new algorithm are acquired. A control is performed to present relative evaluation information of the new algorithm with respect to the current algorithm based on these first evaluation value and second evaluation value. The evaluation values related to the rankings are calculated based on relevance corresponding information. In the relevance corresponding information, a relevance score is made to correspond to a test query of a test content data item for each set of the test query and the test content data item related to this test query.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: October 1, 2019
    Assignee: Rakuten, Inc.
    Inventors: Hiroshi Ukai, Kazuaki Hiraga, Kotaro Ogino
  • Publication number: 20180275552
    Abstract: Provided is a charging roll for an electrophotographic device in which charge capability is increased and uniformity of charging is satisfied. A charging roll for an electrophotographic device, the charging roll being provided with a shaft body, an elastic body layer formed on the outer periphery of the shaft body, and a surface layer formed on the outer periphery of the elastic body layer, the surface layer containing a binder resin, large-diameter particles having an average particle diameter of 15-50 ?m, and small-diameter particles having an average particle diameter of 3 ?m or more and less than 15 ?m, the content of the small-diameter particles being within the range of 5-50 parts by mass with respect to 100 parts by mass of the binder resin, and the size of particle aggregates including the small-diameter particles contained in the surface layer being 6-50 ?m.
    Type: Application
    Filed: May 28, 2018
    Publication date: September 27, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Masanori Satoh, Yasuhide Watanabe, Masanori Ishida, Hiroshi Ukai, Yoshihiro Saito
  • Publication number: 20180217969
    Abstract: An information display device that includes circuitry that receives specification of an annotation position indicating a position of an annotation in display information to be displayed on a display; when specification of the annotation position is received, generates an annotation code corresponding to the annotation position, and stores the generated annotation code in association with the annotation position into a memory; outputs the generated annotation code in a format recognizable to an operator; receives input of annotation information containing at least the annotation code and representing the annotation; and performs control so that, when the annotation code contained in the received annotation information matches the annotation code stored in the memory, the annotation information is output at the position in the display information indicated by the annotation position corresponding to the annotation code.
    Type: Application
    Filed: April 30, 2015
    Publication date: August 2, 2018
    Applicant: Rakuten, Inc.
    Inventor: Hiroshi UKAI
  • Patent number: 10037101
    Abstract: A position indicated by a user with a finger or a stylus can be detected even in a case where an edge of a hand on a little finger side, a wrist or the like touches a touch panel. An input device acquires a touch intensity change signal that indicates a change of touch intensity at a plurality of measuring positions on a touch panel, applies a frequency filter, which suppresses a frequency component of the touch intensity change signal generated by a touch other than by a finger or a stylus, to the touch intensity change signal at at least one of the measuring positions, and generates data of a position indicated by a user on the touch panel based on the touch intensity change signal, to which the frequency filter is applied, at the respective measuring positions.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: July 31, 2018
    Assignee: RAKUTEN, INC.
    Inventor: Hiroshi Ukai
  • Patent number: 9971271
    Abstract: A charging roll includes a shaft, an elastic body layer formed around the shaft, and a surface layer formed around the elastic body layer. The surface layer contains a binder and roughness formation particles, and has projecting sections that project outward in the radial direction farther in the portions in which the roughness formation particles are present than in the portions in which the roughness formation particles are not present. The roughness formation particles are composed of porous silica particles, and the porous silica particles have an average particle size of 5 to 50 ?m, an oil absorbency of 200 to 500 ml/100 g, and a pore size of 5 to 20 nm.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: May 15, 2018
    Assignee: Sumitomo Riko Company Limited
    Inventors: Yasuhide Watanabe, Hiroshi Ukai
  • Publication number: 20180107134
    Abstract: A charging roll includes a shaft, an elastic body layer formed around the shaft, and a surface layer formed around the elastic body layer. The surface layer contains a binder and roughness formation particles, and has projecting sections that project outward in the radial direction farther in the portions in which the roughness formation particles are present than in the portions in which the roughness formation particles are not present. The roughness formation particles are composed of porous silica particles, and the porous silica particles have an average particle size of 5 to 50 ?m, an oil absorbency of 200 to 500 ml/100 g, and a pore size of 5 to 20 nm.
    Type: Application
    Filed: November 23, 2017
    Publication date: April 19, 2018
    Applicant: Sumitomo Riko Company Limited
    Inventors: Yasuhide WATANABE, Hiroshi UKAI
  • Publication number: 20160259442
    Abstract: A position indicated by a user with a finger or a stylus can be detected even in a case where an edge of a hand on a little finger side or a wrist touches a touch panel. An input device acquires information indicating a plurality of points on a touch panel affected by a user's touch, including the touch with a finger or a stylus, calculates distances between a reference position and at least some of the plurality of points, the reference position indicating a position touched by the user on the touch panel other than with the finger or the stylus, selects one or more points affected by the touch with the finger or the stylus from the at least some of the plurality of points based on the calculated distances, and acquires coordinates of a position indicated by the user based on the selected point.
    Type: Application
    Filed: May 30, 2014
    Publication date: September 8, 2016
    Inventor: Hiroshi UKAI
  • Publication number: 20160232249
    Abstract: Under a preliminary environment, test searches with a current algorithm and a new algorithm are performed. Based on evaluation values related to rankings of the searches calculated based on these results, a first evaluation value for the current algorithm and a second evaluation value for the new algorithm are acquired. A control is performed to present relative evaluation information of the new algorithm with respect to the current algorithm based on these first evaluation value and second evaluation value. The evaluation values related to the rankings are calculated based on relevance corresponding information. In the relevance corresponding information, a relevance score is made to correspond to a test query of a test content data item for each set of the test query and the test content data item related to this test query.
    Type: Application
    Filed: April 7, 2014
    Publication date: August 11, 2016
    Applicant: RAKUTEN, INC.
    Inventors: Hiroshi UKAI, Kazuaki HIRAGA, Kotaro OGINO
  • Publication number: 20160154518
    Abstract: A position indicated by a user with a finger or a stylus can be detected even in a case where an edge of a hand on a little finger side, a wrist or the like touches a touch panel. An input device acquires a touch intensity change signal that indicates a change of touch intensity at a plurality of measuring positions on a touch panel, applies a frequency filter, which suppresses a frequency component of the touch intensity change signal generated by a touch other than by a finger or a stylus, to the touch intensity change signal at at least one of the measuring positions, and generates data of a position indicated by a user on the touch panel based on the touch intensity change signal, to which the frequency filter is applied, at the respective measuring positions.
    Type: Application
    Filed: April 30, 2014
    Publication date: June 2, 2016
    Inventor: Hiroshi UKAI
  • Publication number: 20150241809
    Abstract: A phenol resin adhesive is applied to the outer peripheral surface of an axis body 2 and heated for baking to thereby form a undercoating layer 31. A phenol resin adhesive is further applied to the outer peripheral surface of the undercoating layer 31 to thereby form an upper coating layer 32. A rubber elastic layer-forming unvulcanized material for forming a rubber elastic layer 4 is laminated on the outer peripheral surface of the upper coating layer 32, and the rubber elastic layer forming material is vulcanized by heating to thereby form the rubber elastic layer 4, wherein the rubber elastic layer 4 and the undercoating layer 31 are adhered through the upper coating layer 32 while heated and vulcanized.
    Type: Application
    Filed: May 8, 2015
    Publication date: August 27, 2015
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Naoaki Sasakibara, Hiroshi Ukai, Kadai Takeyama
  • Patent number: 8420973
    Abstract: A power-supply control device includes a high-frequency component detecting unit, a machining voltage level detecting device, a no-load time detecting device, and a pulse control device. The high-frequency component detecting unit detects a high-frequency component of discharge voltage at a machining gap. The machining voltage level detecting device detects a discharge voltage level at the machining gap. The no-load time detecting device detects delay time of discharge of the discharge voltage at the machining gap. The high-frequency component is compared with a reference value to obtain a first comparison result. The discharge voltage level is compared with a reference level to obtain a second comparison result. The pulse control device controls pulse off time based on the first comparison result and the detected delay time, and cuts off a discharge pulse based on the second comparison result.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: April 16, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroshi Ukai, Kazunari Morita, Shiro Sasaki