Patents by Inventor Yutaka Imai

Yutaka Imai 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).

  • Patent number: 10844309
    Abstract: Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: November 24, 2020
    Assignees: KYODO YUSHI CO., LTD., DENSO CORPORATION
    Inventors: Shozo Ikejima, Iwaki Hirooka, Yutaka Imai, Ryosuke Ichimura, Kazuki Isa, Yusuke Asada, Kyoji Inukai, Hiromasa Tanaka, Masashi Tobayama, Toshizo Watanabe
  • Publication number: 20190218474
    Abstract: A grease composition includes a base oil, a thickener, and an additive. The base oil contains a synthetic oil. The thickener contains a compound having a urea group. The additive contains a phosphoric compound, a calcium-based compound, and a hydrocarbon-based wax. A hub unit includes the grease composition enclosed therein.
    Type: Application
    Filed: September 28, 2016
    Publication date: July 18, 2019
    Applicants: JTEKT CORPORATION, KYODO YUSHI CO., LTD.
    Inventors: Koji YOSHIZAKI, Hiroshi INUKAI, Yoichiro SANKAI, Shinji YAMANE, Hideo SHIBATA, Hirofumi INOUE, Ryuji NAKATA, Junichi IMAI, Yutaka IMAI, Ryosuke SAITO, Yuta SATO
  • Patent number: 10336964
    Abstract: The invention provides a grease composition suitable for being packed in roll bearings to be lubricated at elevated temperatures and a bearing in which the above-mentioned grease composition is packed. In the grease composition containing a base oil, a urea-containing thickener and an additive, the additive includes an overbased metal sulfonate and the amount of the overbased metal sulfonate is 0.05 to 1.00 mass % with respect to the total amount of the grease composition. The bearing has the above-mentioned grease composition sealed therein.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: July 2, 2019
    Assignee: KYODO YUSHI CO., LTD.
    Inventors: Yutaka Imai, Yuji Onuki
  • Publication number: 20190062664
    Abstract: Provided is a grease composition for a magnet clutch of an automobile, including: a base oil; and a thickener, wherein the composition contains 5% by mass or more of a sulfur content in terms of sulfur element relative to a total mass of the composition.
    Type: Application
    Filed: July 5, 2018
    Publication date: February 28, 2019
    Applicants: Kyodo Yushi Co., Ltd., Denso Corporation
    Inventors: Shozo Ikejima, Iwaki Hirooka, Yutaka Imai, Ryosuke Ichimura, Kazuki Isa, Yusuke Asada, Kyoji Inukai, Hiromasa Tanaka, Masashi Tobayama, Toshizo Watanabe
  • Patent number: 10005980
    Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 26, 2018
    Assignee: KYODO YUSHI CO., LTD.
    Inventors: Toshiaki Endo, Yuji Onuki, Yutaka Imai
  • Patent number: 9989838
    Abstract: A light emitting element includes a base material having a rough surface and a phosphor layer which is directly or indirectly formed on the rough surface of the base material and includes a plurality of phosphor particles which are bonded to each other by a binder.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: June 5, 2018
    Assignee: Sony Corporation
    Inventors: Yuki Maeda, Takahiro Igarashi, Yutaka Imai
  • Publication number: 20170235216
    Abstract: A light emitting element includes a base material having a rough surface and a phosphor layer which is directly or indirectly formed on the rough surface of the base material and includes a plurality of phosphor particles which are bonded to each other by a binder.
    Type: Application
    Filed: May 1, 2017
    Publication date: August 17, 2017
    Applicant: Sony Corporation
    Inventors: Yuki Maeda, Takahiro Igarashi, Yutaka Imai
  • Patent number: 9645479
    Abstract: A light emitting element includes a base material having a rough surface and a phosphor layer which is directly or indirectly formed on the rough surface of the base material and includes a plurality of phosphor particles which are bonded to each other by a binder.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: May 9, 2017
    Assignee: Sony Corporation
    Inventors: Yuki Maeda, Takahiro Igarashi, Yutaka Imai
  • Patent number: 9567545
    Abstract: A grease composition for EV/HEV driving motor bearing, containing a diurea thickener of the following formula (A): wherein R1, R2 and R3 are defined, with the ratio of the number of moles of the straight-chain or branched alkyl group having 16 to 20 carbon atoms to the total number of moles of the cyclohexyl group and the straight-chain or branched alkyl group having 16 to 20 carbon atoms, expressed as [((the number of alkyl group)/(the number of cyclohexyl group+the number of alkyl group))×100] being 60 to 80%, and a base oil which has a kinematic viscosity at 40° C. of 15 to 50 mm2/s and includes a trimethylolpropane ester oil in an amount of 80 mass % or more based on the total base oil mass. The grease composition can exhibit a long bearing lubrication life at high temperature and high speed, and satisfactory low-temperature flowability.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: February 14, 2017
    Assignees: NSK LTD., KYODO YUSHI CO., LTD.
    Inventors: Hironori Mizuki, Takeshi Maejima, Kenichi Iso, Kazunori Nakagawa, Yutaka Imai, Ryo Aida
  • Patent number: 9528073
    Abstract: The invention provides a lubricant composition capable of favorably preventing the members from causing hydrogen embrittlement-induced flaking when the members are operated under the conditions where the oil film is thin (namely, the metal surfaces considerably come in contact with each other). The lubricant composition used for lubricating the steel mechanical members operated by a rolling motion or rolling-sliding motion is characterized by containing a base oil and additives, the additives including an organic sulfonate rust inhibitor and a load carrying additive.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: December 27, 2016
    Assignee: KYODO YUSHI CO., LTD.
    Inventors: Toshiaki Endo, Junichi Imai, Yutaka Imai
  • Patent number: 9410107
    Abstract: A grease composition for a rolling bearing for a motor to support a rotor of the motor, containing a pentaerythritol ester base oil with a kinematic viscosity at 40° C. of 20 to 55 mm2/s; 7 to 13 mass % of a diurea thickener represented by formula (A) where each R group is defined; and a rust inhibitor mixture selected from the group consisting of polyol ester type rust inhibitors and organic sulfonate type rust inhibitors. The grease composition can prevent a peculiar noise from being produced at low temperatures, satisfy the low torque performance over a wide temperature range, extend the bearing lubrication life even under the circumstances of high temperature, and exhibit excellent rust inhibiting effect on varnish.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: August 9, 2016
    Assignees: KYODO YUSHI CO., LTD., NTN CORPORATION
    Inventors: Ryo Aida, Yutaka Imai, Kenta Sakaguchi
  • Patent number: 9376644
    Abstract: The lubricant composition of this invention comprises a base oil and an additive, which is at least one selected from the group consisting of an organic sulfonate, a carboxylate, a thiocarbamate and a thiophosphoric acid ester salt. The lubricant composition can effectively suppress hydrogen embrittlement-caused flaking of an element, such as a rolling bearing, a sliding bearing, a gear, a ball thread, a linear guide, a linear bearing, a cam and various joints in a high concentration hydrogen environment. The invention provides also a rolling bearing, a sliding bearing, a gear, a ball thread, a linear guide, a linear bearing, a cam and various joints using the lubricant composition.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: June 28, 2016
    Assignee: KYODO YUSHI CO., LTD.
    Inventors: Toshiaki Endo, Da Ming Dong, Yutaka Imai
  • Patent number: 9235069
    Abstract: There is provided a display device including a transmissive display panel composed of pixels arranged in a form of a two-dimensional matrix in a first direction and a second direction different from the first direction, a planar illumination device for illuminating the transmissive display panel from a rear surface thereof, and a parallax barrier disposed between the transmissive display panel and the planar illumination device, for dividing an image displayed on the transmissive display panel into images for multiple viewpoints.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: January 12, 2016
    Assignee: Sony Corporation
    Inventors: Norifumi Hoshino, Yoshihisa Sato, Yutaka Imai
  • Patent number: 9176341
    Abstract: A transmissive-type display device having a display area which is sequentially scanned; and a lighting device arranged on a rear face of the display device, including lighting units arranged so as to be aligned in a direction from one toward the other end portion side along a direction in which the display area is sequentially scanned. The lighting units are in a light emitting state over a light emitting period after sequential scanning of display units including portions of the display area corresponding to the lighting units is completed, and the lighting units are sequentially scanned from one toward the other end portion side in accordance with the sequential scanning of the display area. A length of waiting time from the completion of sequential scanning of the display unit until the corresponding lighting unit emits light is nonlinearly decreased.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: November 3, 2015
    Assignee: SONY CORPORATION
    Inventors: Tetsuro Kuwayama, Satoshi Tomioka, Ryo Miyao, Yutaka Imai
  • Publication number: 20150276177
    Abstract: A light emitting element includes a base material having a rough surface and a phosphor layer which is directly or indirectly formed on the rough surface of the base material and includes a plurality of phosphor particles which are bonded to each other by a binder.
    Type: Application
    Filed: March 23, 2015
    Publication date: October 1, 2015
    Applicant: Sony Corporation
    Inventors: Yuki Maeda, Takahiro Igarashi, Yutaka Imai
  • Publication number: 20150225668
    Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.
    Type: Application
    Filed: April 22, 2015
    Publication date: August 13, 2015
    Inventors: Toshiaki ENDO, Yuji ONUKI, Yutaka IMAI
  • Patent number: 9085744
    Abstract: A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. A grease composition comprising a base oil and a thickener, characterized in that the base oil contains an ester synthetic oil, the content of the ester synthetic oil is not less than 20% by mass of the total mass of the base oil and the thickener contains a diurea compound represented by the Formula (I): R1—NHCONH—R2—NHCONH—R3,??(I) wherein R2 is a C6-15 divalent aromatic hydrocarbon group, R1 and R3 are the same or different, and represent cyclohexyl or C8-22 linear or branched alkyl, and the molar ratio of cyclohexyl to the total of cyclohexyl and C8-22 linear or branched alkyl is 60 to 95%.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: July 21, 2015
    Assignee: KYODO YUSHI CO., LTD.
    Inventors: Toshiaki Endo, Yuji Onuki, Yutaka Imai
  • Patent number: 9075255
    Abstract: There is provided a display device including a transmissive display panel composed of pixels arranged in a form of a two-dimensional matrix in a first direction and a second direction different from the first direction, a planar illumination device for illuminating the transmissive display panel from a rear surface thereof, and a parallax barrier disposed between the transmissive display panel and the planar illumination device, for dividing an image displayed on the transmissive display panel into images for multiple viewpoints.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: July 7, 2015
    Assignee: Sony Corporation
    Inventors: Norifumi Hoshino, Yoshihisa Sato, Yutaka Imai
  • Publication number: 20150153579
    Abstract: There is provided a display device including a transmissive display panel composed of pixels arranged in a form of a two-dimensional matrix in a first direction and a second direction different from the first direction, a planar illumination device for illuminating the transmissive display panel from a rear surface thereof, and a parallax barrier disposed between the transmissive display panel and the planar illumination device, for dividing an image displayed on the transmissive display panel into images for multiple viewpoints.
    Type: Application
    Filed: February 9, 2015
    Publication date: June 4, 2015
    Applicant: Sony Corporation
    Inventors: Norifumi Hoshino, Yoshihisa Sato, Yutaka Imai
  • Patent number: 9002718
    Abstract: When the present time of a clock circuit is a medication time recorded in advance in a SD card, a notice that the medication time has come is given by a voice output portion or the like. Presence/absence of a medicine package in each block of a medicine package case is sensed by a medicine package sensor. The time point and the presence/absence of the medicine package are recorded in the SD card. A notice corresponding to the presence/absence is output. At a time except for the medication time, taking-out of the case, opening/closing of the cover, taking-out and return of the medicine package are recorded in the SD card based on detection signals from the medicine package sensor, medicine package case sensor, and case cover opening/closing sensor. A notice corresponding to the sensed situation is output.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: April 7, 2015
    Assignees: Omron Healthcare Company Ltd.
    Inventors: Yutaka Imai, Tomonori Inoue, Kenji Eda, Takahide Tanaka