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).
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Publication number: 20230314980Abstract: 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: ApplicationFiled: June 6, 2023Publication date: October 5, 2023Applicant: Sumitomo Riko Company LimitedInventors: Yoshihiro SAITO, Hiroshi UKAI, Masanori ISHIDA
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Patent number: 11422660Abstract: 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: GrantFiled: August 25, 2020Date of Patent: August 23, 2022Assignee: RAKUTEN GROUP, INC.Inventor: Hiroshi Ukai
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Patent number: 11106151Abstract: 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: GrantFiled: February 3, 2021Date of Patent: August 31, 2021Assignee: Sumitomo Riko Company LimitedInventors: Yoshihiro Saito, Hiroshi Ukai
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Publication number: 20210157252Abstract: 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: ApplicationFiled: February 3, 2021Publication date: May 27, 2021Applicant: Sumitomo Riko Company LimitedInventors: Yoshihiro SAITO, Hiroshi UKAI
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Publication number: 20200387258Abstract: 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: ApplicationFiled: August 25, 2020Publication date: December 10, 2020Inventor: Hiroshi UKAI
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Patent number: 10788917Abstract: 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: GrantFiled: May 30, 2014Date of Patent: September 29, 2020Assignee: RAKUTEN, INC.Inventor: Hiroshi Ukai
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Patent number: 10691038Abstract: 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: GrantFiled: November 7, 2019Date of Patent: June 23, 2020Assignee: Sumitomo Riko Company LimitedInventors: Takahisa Kose, Shigeki Kanda, Yasuyuki Hayasaki, Hiroshi Ukai
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Patent number: 10642929Abstract: 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: GrantFiled: April 30, 2015Date of Patent: May 5, 2020Assignee: RAKUTEN, Inc.Inventor: Hiroshi Ukai
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Publication number: 20200073274Abstract: 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: ApplicationFiled: November 7, 2019Publication date: March 5, 2020Applicant: Sumitomo Riko Company LimitedInventors: Takahisa KOSE, Shigeki KANDA, Yasuyuki HAYASAKI, Hiroshi UKAI
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Patent number: 10430475Abstract: 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: GrantFiled: April 7, 2014Date of Patent: October 1, 2019Assignee: Rakuten, Inc.Inventors: Hiroshi Ukai, Kazuaki Hiraga, Kotaro Ogino
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Publication number: 20180275552Abstract: 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: ApplicationFiled: May 28, 2018Publication date: September 27, 2018Applicant: Sumitomo Riko Company LimitedInventors: Masanori Satoh, Yasuhide Watanabe, Masanori Ishida, Hiroshi Ukai, Yoshihiro Saito
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Publication number: 20180217969Abstract: 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: ApplicationFiled: April 30, 2015Publication date: August 2, 2018Applicant: Rakuten, Inc.Inventor: Hiroshi UKAI
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Patent number: 10037101Abstract: 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: GrantFiled: April 30, 2014Date of Patent: July 31, 2018Assignee: RAKUTEN, INC.Inventor: Hiroshi Ukai
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Patent number: 9971271Abstract: 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: GrantFiled: November 23, 2017Date of Patent: May 15, 2018Assignee: Sumitomo Riko Company LimitedInventors: Yasuhide Watanabe, Hiroshi Ukai
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Publication number: 20180107134Abstract: 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: ApplicationFiled: November 23, 2017Publication date: April 19, 2018Applicant: Sumitomo Riko Company LimitedInventors: Yasuhide WATANABE, Hiroshi UKAI
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Publication number: 20160259442Abstract: 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: ApplicationFiled: May 30, 2014Publication date: September 8, 2016Inventor: Hiroshi UKAI
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Publication number: 20160232249Abstract: 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: ApplicationFiled: April 7, 2014Publication date: August 11, 2016Applicant: RAKUTEN, INC.Inventors: Hiroshi UKAI, Kazuaki HIRAGA, Kotaro OGINO
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Publication number: 20160154518Abstract: 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: ApplicationFiled: April 30, 2014Publication date: June 2, 2016Inventor: Hiroshi UKAI
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Publication number: 20150241809Abstract: 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: ApplicationFiled: May 8, 2015Publication date: August 27, 2015Applicant: SUMITOMO RIKO COMPANY LIMITEDInventors: Naoaki Sasakibara, Hiroshi Ukai, Kadai Takeyama
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Patent number: 8420973Abstract: 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: GrantFiled: October 20, 2006Date of Patent: April 16, 2013Assignee: Mitsubishi Electric CorporationInventors: Hiroshi Ukai, Kazunari Morita, Shiro Sasaki