Patents by Inventor Kozo Nakamura

Kozo Nakamura 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: 9292011
    Abstract: A hydraulic shovel includes: a storage unit which stores an operation history of a target component of the shovel targeted for life span estimation, a discrimination threshold value used for classifying usage of the target component into a plurality of usage modes based on the operation history, and a usage mode-specific estimated life span indicative of an estimated life span of the target component in each of the usage modes; and an arithmetic and control unit which calculates an operating time of the target component in each of the usage modes in accordance with the operation history and the discrimination threshold value, and estimates the life span of the target component based on the operating time calculated for each of the usage modes and on the usage mode-specific estimated life span.
    Type: Grant
    Filed: April 24, 2012
    Date of Patent: March 22, 2016
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Hideaki Suzuki, Kozo Nakamura, Shinya Yuda, Hiroki Uchiyama, Takashi Saeki, Kesaaki Minemura, Jyunsuke Fujiwara
  • Publication number: 20160077247
    Abstract: Provided is a light diffusing element having a high haze value, strong diffusibility, suppressed backscattering, and reduced transmission of straight advancing light. The light diffusing element of the present invention includes: a matrix including a resin component and ultrafine particle components; and light diffusing fine particles dispersed in the matrix, in which a concentration modulation region having a substantially spherical shell shape is formed on an outside of each of the light diffusing fine particles in a vicinity of a surface thereof, a weight concentration of the ultrafine particle components in the concentration modulation region increasing with increasing distance from the each of the light diffusing fine particles, and in which an average center-to-center distance A of the light diffusing fine particles in the light diffusing element, and an average particle diameter B of the light diffusing fine particles in the light diffusing element have a relationship of 0.90<B/A.
    Type: Application
    Filed: April 10, 2013
    Publication date: March 17, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Hiroyuki Takemoto, Seiji Umemoto
  • Publication number: 20160070036
    Abstract: Provided is a method of manufacturing a light diffusing element by which a light diffusing element having a high haze value, having strong diffusibility, and having suppressed backscattering by virtue of having a smooth surface can be manufactured at low cost and with high productivity (within a short period of time). The method of manufacturing a light diffusing element according to one embodiment of the present invention includes: a step A of mixing light diffusing fine particles and an organic solvent to prepare a mixed liquid and to swell the light diffusing fine particles; a step B of mixing the mixed liquid and a matrix-forming material containing a precursor of a resin component and ultrafine particle components; and a step C of polymerizing the precursor of a resin component to form a matrix including a resin component and the ultrafine particle components.
    Type: Application
    Filed: April 10, 2013
    Publication date: March 10, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Takehito Fuchida, Hiroyuki Takemoto
  • Publication number: 20160054485
    Abstract: An object of the present invention is to provide a light diffusing element having a high haze value, strong diffusibility, a smooth surface, and suppressed backscattering. The light diffusing element of the present invention includes: a matrix including a resin component and ultrafine particle components; and light diffusing fine particles dispersed in the matrix, in which part of the resin component permeates the light diffusing fine particles, and a permeation range of the resin component in the light diffusing fine particles is 90% or more with respect to an average particle diameter of the light diffusing fine particles in the light diffusing element, and in which the light diffusing element has an arithmetic average surface roughness Ra of 0.04 ?m or less.
    Type: Application
    Filed: April 10, 2013
    Publication date: February 25, 2016
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo NAKAMURA, Hiroyuki TAKEMOTO
  • Patent number: 9238353
    Abstract: An interlayer film for a laminated glass provides excellent vibration damping performance at high temperature and excellent sound insulation in a wide temperature range. The interlayer film comprises a part A containing a resin composition A or a resin A and a part B containing a resin composition B or a resin B, and the part A and the part B are horizontally arranged. The interlayer film for a laminated glass has a difference between temperatures Ta and Tb of 10° C. or larger when the temperature Ta is a temperature at which the resin composition A or the resin A shows a maximum loss tangent of a dynamic viscoelasticity at a frequency of 1 Hz, and the temperature Tb is a temperature at which the resin composition B or the resin B shows a maximum loss tangent of a dynamic viscoelasticity at a frequency of 1 Hz.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: January 19, 2016
    Assignee: SEKISUI CHEMICAL CO., LTD.
    Inventors: Kozo Nakamura, Michio Shimamoto
  • Patent number: 9216241
    Abstract: An object is to provide a medical device having excellent antithrombotic and sliding characteristics, which can exert a cell adhesion inhibitory effect. A medical device comprising: a substrate capable of forming hydroxyl groups; and a biocompatible material layer laminated on the substrate at an appropriate position, wherein the hydroxyl groups are formed on a surface of the substrate at least at a required position by a surface treatment, while the biocompatible material layer is formed from a polymer containing phosphorylcholine groups, and wherein the substrate and the biocompatible material layer are joined via a binder layer formed from silica being covalently bonded with the hydroxyl groups and the biocompatible material, respectively.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: December 22, 2015
    Assignees: KYOCERA MEDICAL CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Masayuki Kyomoto, Kazuhiko Ishihara, Kozo Nakamura, Yoshio Takatori, Hiroshi Kawaguchi, Toru Moro
  • Patent number: 9217552
    Abstract: A lighting device (100) includes: a surface light source (1); a first lens (L1) having a first focal point (F1), the first lens being provided on the light exit surface side of the surface light source; and a second lens (L2) having a second focal point (F2), the second lens being provided on a light exit surface side of the first lens, the surface light source, the first lens, and the second lens being configured such that a first virtual image (I1) is formed by the first lens and a second virtual image (I2) is formed by the second lens, wherein the first virtual image (I1) is formed between the second focal point (F2) and the first lens, the second focal point (F2) is on a side opposite to the light source side relative to a predetermined focal position f?, and at least either of a light entry surface or a light exit surface of the first lens or the second lens includes a non-revolution surface (SO) as a lens surface, and a plurality of boundary lines (B1-B4) whose curvatures vary discontinuously are provid
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: December 22, 2015
    Assignees: Sharp Kabushiki Kaisha, Tohoku University
    Inventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Toshiki Matsuoka, Kozo Nakamura, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii
  • Patent number: 9210412
    Abstract: The present invention provides active shutter glasses and a stereoscopic image projection system that allow a stereoscopic image of excellent display quality to be viewed. The present invention provides active shutter glasses for a stereoscopic image projection system in which the active shutter glasses include a shutter section for the right eye and a shutter section for the left eye, the shutter section for the right eye and the shutter section for the left eye each include a liquid crystal cell, and when the glasses are worn, viewing angles of the shutter section for the right eye and the shutter section for the left eye each are wider on the right and left sides than on the upper and lower sides.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: December 8, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shun Ueki, Takahiro Nakahara, Kozo Nakamura, Akira Sakai
  • Patent number: 9192694
    Abstract: The object of the present invention is to provide a sliding member, a prosthesis and a method of producing the sliding member, which can suppress production of abrasive wear debris by suppressing friction of the sliding section, and also can maintain satisfactory mechanical characteristics in vivo. A sliding member comprising: a substrate 1 capable of forming hydroxyl groups; and a biocompatible material layer 4 laminated on appropriate sections of the substrate 1, wherein hydroxyl groups are formed on at least a required section of a surface of the substrate 1 by surface treating to form a surface-treated layer 2, while the biocompatible material layer 4 is formed from a polymer containing phosphorylcholine groups, and wherein the substrate 1 and the biocompatible material layer 4 are joined via a binder layer 3 formed from silica being covalently bonded with the hydroxyl groups and the biocompatible material, respectively.
    Type: Grant
    Filed: October 2, 2008
    Date of Patent: November 24, 2015
    Assignees: KYOCERA MEDICAL CORPORATION, THE UNIVERSITY OF TOKYO
    Inventors: Masayuki Kyomoto, Kazuhiko Ishihara, Kozo Nakamura, Yoshio Takatori, Hiroshi Kawaguchi, Toru Moro
  • Patent number: 9176264
    Abstract: There is provided a light diffusing element made of a thin film capable of realizing low back scattering and a high haze. A light diffusing element according to an embodiment of the invention includes: a first region having a first refractive index n1; a refractive index modulation region having a substantially spherical shell shape and surrounding the first region; and a second region having a second refractive index n2, the second region being positioned on a side of the refractive index modulation region opposite to the first region. The light diffusing element satisfies the following expressions (1) and (2): 0.0006??n/L??(1) 10?(?n)2×A×B?100??(2).
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: November 3, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Akinori Nishimura, Kozo Nakamura, Hiroyuki Takemoto, Takehito Fuchida, Kazuto Yamagata, Shunsuke Shutou, Tomohito Takita
  • Publication number: 20150277012
    Abstract: Provided is an optical member that can realize a liquid crystal display apparatus that is excellent in mechanical strength and suppressed in color shift. The optical member includes: a polarizing plate; a reflective polarizer; a low refractive index layer having a selected refractive index; and a prism sheet.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Kazuki Uwada, Hiromoto Haruta, Takehito Fuchida, Hiroyuki Takemoto, Nao Murakami, Daisuke Hattori
  • Publication number: 20150277011
    Abstract: Provided is an optical member that can realize a liquid crystal display apparatus that is excellent in mechanical strength and provides sufficient brightness. The optical member includes: a polarizing plate; a low refractive index layer having a selected refractive index; and a prism sheet.
    Type: Application
    Filed: March 27, 2015
    Publication date: October 1, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Kazuki Uwada, Hiromoto Haruta, Takehito Fuchida, Hiroyuki Takemoto, Nao Murakami, Daisuke Hattori
  • Patent number: 9122273
    Abstract: The invention is related to a system and a method to determine whether a target equipment deviates from a normal state. If it is determined that the target equipment to be diagnosed deviates from the normal state, the degree of deviation of each parameter from the normal state as the reference is calculated as an abnormal contribution ratio. A failure cause is estimated from a similarity ratio between the calculated abnormal contribution ratio and the abnormal contribution ratio of each of the failure causes collected in the past and including failure phenomena and failure parts.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: September 1, 2015
    Assignee: HITACHI, LTD.
    Inventors: Hiroki Uchiyama, Shinya Yuda, Hideaki Suzuki, Kozo Nakamura
  • Publication number: 20150234106
    Abstract: There is provided an optical member that can realize a liquid crystal display apparatus that is excellent in mechanical strength and has high illuminance. An optical member according to an embodiment of the present invention includes a polarizing plate, a reflective polarizer, and a prism sheet in the stated order. The optical member has a reflectance of 70% or more for linearly polarized light having a wavelength of 650 nm entering the reflective polarizer at 45°.
    Type: Application
    Filed: May 7, 2014
    Publication date: August 20, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kozo Nakamura, Shouhei Maezawa, Takehito Fuchida, Hiroyuki Takemoto, Nao Murakami
  • Publication number: 20150226999
    Abstract: There is provided an optical member that suppresses the occurrence of moire and glare, and can realize a liquid crystal display apparatus that is excellent in mechanical strength and has high brightness. An optical member according to an embodiment of the present invention includes: a polarizing plate; a light-diffusing pressure-sensitive adhesive layer; a reflective polarizer; and a prism sheet. A volume-average particle diameter of light-diffusible fine particles in the light-diffusing pressure-sensitive adhesive layer is from 1 ?m to 4 ?m; and a refractive index of a pressure-sensitive adhesive in the light-diffusing pressure-sensitive adhesive layer is 1.47 or more.
    Type: Application
    Filed: September 9, 2013
    Publication date: August 13, 2015
    Applicant: NITTO DENKO CORPORATION
    Inventors: Takehito Fuchida, Shouhei Maezawa, Kozo Nakamura, Hiroyuki Takemoto, Nao Murakami
  • Publication number: 20150211709
    Abstract: A lighting device (100) includes: a surface light source (1); a first lens (L1) having a first focal point (F1), the first lens being provided on the light exit surface side of the surface light source; and a second lens (L2) having a second focal point (F2), the second lens being provided on a light exit surface side of the first lens, the surface light source, the first lens, and the second lens being configured such that a first virtual image (I1) is formed by the first lens and a second virtual image (I2) is formed by the second lens, wherein the first virtual image (I1) is formed between the second focal point (F2) and the first lens, and the second focal point (F2) is on a side opposite to the light source side relative to a predetermined focal position f?.
    Type: Application
    Filed: July 26, 2013
    Publication date: July 30, 2015
    Applicants: Sharp Kabushiki Kaisha, TOHOKU UNIVERSITY
    Inventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Toshiki Matsuoka, Kozo Nakamura, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii, David Montgomery
  • Publication number: 20150206104
    Abstract: The maintenance management device 3 includes an error status diagnosis unit 11, a grace period estimation unit 14, a maintenance cost estimation unit 15, and a screen display unit 17. When the error status diagnosis unit 11 has diagnosed the occurrence of an anomaly, the grace period estimation unit 14 estimates a first grace period leading up to the occurrence of a failure. The maintenance cost estimation unit 15 estimates the cost of corrective maintenance incurred when the failure occurs after the elapse of the first grace period. The screen display unit 17 displays a combination of the first grace period and the cost of corrective maintenance. Alternatively, the grace period estimation unit 14 estimates a second grace period over which preventive maintenance may be postponed without a failure.
    Type: Application
    Filed: July 10, 2013
    Publication date: July 23, 2015
    Inventors: Hideaki Suzuki, Kozo Nakamura, Shinya Yuda, Munetoshi Unuma, Junsuke Fujiwara, Takayuki Uchida, Katsuaki Tanaka, Mitsuo Aihara, Teruo Nakamura, Nobuyoshi Hirowatari, Hiroshi Ogura
  • Patent number: 9074348
    Abstract: A learning diagnostic system for a working machine is capable of making a fault diagnosis of the working machine universally relative to various types of sensor information, and preventing a failure in the working machine by enabling a fault diagnosis even in a transient operating state that represents a transitional state between operating states. A state learning device 201 sorts inputted sensor data 101a into one under a steady operating state and one under a transient operating state, and generates, through learning, steady state data 102a and intermediate state data 103a, each including a permissible error. A state diagnostic device 202 uses the steady state data 102a to determine whether an operating state of the working machine related to the inputted sensor data is the steady operating state or the transient operating state, and make a fault determination in the steady operating state.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: July 7, 2015
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Hideaki Suzuki, Yoshinori Furuno, Kenji Araki, Kozo Nakamura, Shinya Yuda, Hirotaka Takahashi
  • Publication number: 20150179140
    Abstract: A display device in which an image with a wide color reproduction range and bright red can be displayed is provided. The display device is a display device such as, for example, a liquid crystal display device, a cathode ray tube, an organic electroluminescent display device, a plasma display panel, and a field emission display. The display device includes a display surface including a pixel having red, green, blue, and yellow sub-pixels, wherein the red sub-pixel preferably has the largest aperture area.
    Type: Application
    Filed: March 5, 2015
    Publication date: June 25, 2015
    Inventors: Kozo NAKAMURA, Shun UEKI, Tokio TAGUCHI, Akiko ITOU
  • Publication number: 20150167924
    Abstract: A lighting device (100) includes: a surface light source (1); a first lens (L1) having a first focal point (F1), the first lens being provided on the light exit surface side of the surface light source; and a second lens (L2) having a second focal point (F2), the second lens being provided on a light exit surface side of the first lens, the surface light source, the first lens, and the second lens being configured such that a first virtual image (I1) is formed by the first lens and a second virtual image (I2) is formed by the second lens, wherein the first virtual image (I1) is formed between the second focal point (F2) and the first lens, the second focal point (F2) is on a side opposite to the light source side relative to a predetermined focal position f?, and at least either of a light entry surface or a light exit surface of the first lens or the second lens includes a non-revolution surface (SO) as a lens surface, and a plurality of boundary lines (B1-B4) whose curvatures vary discontinuously are provid
    Type: Application
    Filed: July 2, 2013
    Publication date: June 18, 2015
    Inventors: Tatsuo Uchida, Yoshito Suzuki, Tohru Kawakami, Takahiro Ishinabe, Katsunori Ehara, Yoshihiro Hashimoto, Toshiki Matsuoka, Kozo Nakamura, Yasuhisa Itoh, Yoshitaka Yamamoto, Yutaka Ishii