Patents by Inventor Kenji Igarashi

Kenji Igarashi 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: 11960096
    Abstract: A head-mounted display device includes an image display unit (300a, 300b) configured to emit image light, a light guide member (100a, 100b) configured to guide the image light and emit the image light to eyes of a wearer who wears the head-mounted display device, and a relay optical system (201a, 201b) arranged between the image display unit and the light guide member, and configured to relay the image light from the image display unit to the light guide member, and form an intermediate image at least once before the image light enters the light guide member.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: April 16, 2024
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shigenobu Hirano, Yasuo Katano, Kenji Kameyama, Norikazu Igarashi, Satomi Tanaka, Naoki Nakamura
  • Patent number: 11884865
    Abstract: A liquid crystal emulsification method that can reduce formulation restriction and adjust the size of a dispersed phase with small variation in size of the dispersed phase, and a liquid crystal emulsion are provided. The liquid crystal emulsification method includes: adding a moisture content and/or an oil content at a predetermined ratio to a surfactant having an HLB falling within a predetermined range; and setting a temperature during formation of a dispersion or an emulsion to a predetermined temperature, to adjust a lamellar liquid crystal having a regular molecular arrangement in which the oil content and/or the moisture content are alternately arranged in a bilayer membrane formed from the surfactant.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: January 30, 2024
    Assignee: Wacker Chemie AG
    Inventors: Kenji Igarashi, Shinichi Araki, Yoko Hori
  • Patent number: 11607375
    Abstract: An oil-in-water type emulsion is characterized in that a fumed silica particle group in which lower order aggregates are aggregated with each other to form a higher order aggregate by a non-chemical bond forms a network-like surrounding structure including an oil inside the network-like surrounding structure.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: March 21, 2023
    Assignee: WACKER CHEMIE AG
    Inventors: Kenji Igarashi, Mikiko Kimura
  • Publication number: 20220403246
    Abstract: A liquid crystal emulsification method that can reduce formulation restriction and adjust the size of a dispersed phase with small variation in size of the dispersed phase, and a liquid crystal emulsion are provided. The liquid crystal emulsification method includes: adding a moisture content and/or an oil content at a predetermined ratio to a surfactant having an HLB falling within a predetermined range; and setting a temperature during formation of a dispersion or an emulsion to a predetermined temperature, to adjust a lamellar liquid crystal having a regular molecular arrangement in which the oil content and/or the moisture content are alternately arranged in a bilayer membrane formed from the surfactant.
    Type: Application
    Filed: December 10, 2020
    Publication date: December 22, 2022
    Applicant: Wacker Chemie AG
    Inventors: Kenji IGARASHI, Shinichi ARAKI, Yoko HORI
  • Publication number: 20210346247
    Abstract: An oil-in-water type emulsion is characterized in that a fumed silica particle group in which lower order aggregates are aggregated with each other to form a higher order aggregate by a non-chemical bond forms a network-like surrounding structure including an oil inside the network-like surrounding structure.
    Type: Application
    Filed: May 17, 2019
    Publication date: November 11, 2021
    Applicant: WACKER CHEMIE AG
    Inventors: Kenji IGARASHI, Mikiko KIMURA
  • Publication number: 20210308600
    Abstract: A silicone defoamer composition of a type which defoams by being previously added to a foaming liquid includes a composite particle group of an oil containing silicone and silica.
    Type: Application
    Filed: July 23, 2019
    Publication date: October 7, 2021
    Applicant: Wacker Chemie AG
    Inventors: Satoshi Ohno, Kenji Igarashi
  • Patent number: 10844176
    Abstract: The use of an N-acylaminoacid condensate as a surfactant in the preparation of silicone rubber particle emulsions allows the emulsions to be prepared with exceptionally low levels of surfactants. The resulting rubber particles display typical silicone rubber characteristics in contrast to rubber particles prepared using larger amounts of conventional surfactants.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: November 24, 2020
    Assignee: WACKER CHEMIE AG
    Inventor: Kenji Igarashi
  • Publication number: 20200261334
    Abstract: Aqueous dispersions which exhibit properties required of an aqueous dispersion and achieve stability and homogeneity include inorganic particle groups dispersed in an aggregation state in water. In this dispersion, when the total mole number ratio represented by moles of surface hydrophilic groups of the inorganic particle groups moles of surface hydrophobic groups is within a prescribed lower limit value or more depending on the aggregating properties of inorganic particles, the inorganic particle groups contain self-micelle-like aggregates and hydrophobic-rich aggregates.
    Type: Application
    Filed: August 9, 2017
    Publication date: August 20, 2020
    Applicant: WACKER CHEMIE AG
    Inventors: Airi SENGOKU, Yukihiko ASAKAWA, Kenji IGARASHI
  • Publication number: 20190055362
    Abstract: The use of an N-acylaminoacid condensate as a surfactant in the preparation of silicone rubber particle emulsions allows the emulsions to be prepared with exceptionally low levels of surfactants. The resulting rubber particles display typical silicone rubber characteristics in contrast to rubber particles prepared using larger amounts of conventional surfactants.
    Type: Application
    Filed: February 16, 2017
    Publication date: February 21, 2019
    Applicant: Wacker Chemie AG
    Inventor: Kenji IGARASHI
  • Publication number: 20190038520
    Abstract: Substantially truly spherical silica-coated silicone rubber particles which do not have blocking problems are easily produced, and exhibit excellent dispersion stability, stability during the isolation of particles, and stability of physical properties. The silica-coated silicone rubber particles include silicone rubber particles and a coating layer thereon configured to coat the surface of the silicone rubber particle and formed from silica particles, in a coating amount of 2.0×10?9 to 3.2×10?6 kg/m2. The particles have a sphericity of 0.8 to 1.0.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 7, 2019
    Applicant: Wacker Chemie AG
    Inventor: Kenji IGARASHI
  • Patent number: 10173296
    Abstract: A grinding machine includes a rotatable spindle having a lower end to which a grindstone for grinding a wafer is attached; linear guides supporting the spindle slidably to a column; a spindle feeding mechanism feeding the spindle in a vertical direction; and constant-pressure feeding mechanism interposed between the spindle feeding mechanism and the column and suspending the spindle feeding mechanism. The constant-pressure feeding mechanism raises the spindle feeding mechanism in the vertical direction when a friction force acting on the grindstone is higher than a predetermined value.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: January 8, 2019
    Assignee: Tokyo Seimitsu Co., Ltd.
    Inventors: Masaki Kanazawa, Kenji Igarashi
  • Publication number: 20180229341
    Abstract: A grinding machine includes a rotatable spindle having a lower end to which a grindstone for grinding a wafer is attached; linear guides supporting the spindle slidably to a column; a spindle feeding mechanism feeding the spindle in a vertical direction; and constant-pressure feeding mechanism interposed between the spindle feeding mechanism and the column and suspending the spindle feeding mechanism.
    Type: Application
    Filed: September 29, 2016
    Publication date: August 16, 2018
    Inventors: Masaki KANAZAWA, Kenji IGARASHI
  • Patent number: 8915432
    Abstract: The present invention relates to an electronic apparatus concerned about global environment, which enables its user to be convinced of his/her commitment to reducing greenhouse gas emissions accompanying power consumption by letting the user purchase a consumable goods/replacement part to lead the user to join greenhouse gas emissions reduction. The electronic apparatus is configured as a printer, etc. that operates with attached a refill cartridge (consumable goods), which is replaceable in the apparatus body and affixed with information by which a greenhouse gas emission right accordance is identified.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: December 23, 2014
    Assignees: Casio Computer Co., Ltd., Casio Electronics Manufacturing Co., Ltd.
    Inventors: Satoru Kataoka, Kenji Igarashi
  • Publication number: 20130171222
    Abstract: Stable aqueous silicone emulsion compositions contain a silicone or silicone mixture having a viscosity of 1×103 to 5×104 mPas, water, and a polyoxyethylated castor oil or hydrogenated castor oil surfactant with a degree of oxyethylation of 150 to 300. The emulsions are stable even in the presence of significant amounts of monoalcohols, and are useful in hair cosmetic formulations.
    Type: Application
    Filed: August 25, 2011
    Publication date: July 4, 2013
    Applicant: WACKER CHEMIE AG
    Inventors: Kenji Igarashi, Shinichi Araki
  • Patent number: 8003950
    Abstract: A radiation detector includes: a base plate; and a radiation detection unit provided on one major surface side of the base plate and configured to output an electrical signal proportional to intensity of radiation. The base plate includes a buffer section at a junction with the radiation detection unit, the buffer section being configured to absorb stress generated at the junction due to temperature variation.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: August 23, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kenji Igarashi
  • Publication number: 20100239060
    Abstract: In a reflector-controlled fast reactor in which neutron reflectors disposed outside a rector core, immersed in a primary coolant, are moved vertically to thereby adjust leakage of neutrons from the reactor core and control reactivity of the rector core, a region, which is located around the reactor core and in which the neutron reflectors move, is surrounded by a material inferior to the primary coolant in terms of neutron reflection capability.
    Type: Application
    Filed: September 19, 2008
    Publication date: September 23, 2010
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hideki Horie, Yasuyuki Moriki, Kenji Igarashi
  • Publication number: 20090314837
    Abstract: The present invention relates to an electronic apparatus concerned about global environment, which enables its user to be convinced of his/her commitment to reducing greenhouse gas emissions accompanying power consumption by letting the user purchase a consumable goods/replacement part to lead the user to join greenhouse gas emissions reduction. The electronic apparatus is configured as a printer, etc. that operates with attached a refill cartridge (consumable goods), which is replaceable in the apparatus body and affixed with information by which a greenhouse gas emission right accordance is identified.
    Type: Application
    Filed: June 16, 2009
    Publication date: December 24, 2009
    Applicants: CASIO ELECTRONICS MANUFACTURING CO., LTD., CASIO COMPUTER CO., LTD.
    Inventors: Satoru KATAOKA, Kenji Igarashi
  • Publication number: 20090225955
    Abstract: The angle of each collimator plate with respect to an X-ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X-ray detector side in a corresponding groove of an abutment plate provided on the X-ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate at least three sides.
    Type: Application
    Filed: April 3, 2009
    Publication date: September 10, 2009
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEDICAL SYSTEMS CORPORATION
    Inventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide, Shuya Nambu, Masahiko Yamazaki, Katsuya Yamada, Yasutada Nakagawa
  • Publication number: 20090184250
    Abstract: A radiation detector includes: a base plate; and a radiation detection unit provided on one major surface side of the base plate and configured to output an electrical signal proportional to intensity of radiation. The base plate includes a buffer section at a junction with the radiation detection unit, the buffer section being configured to absorb stress generated at the junction due to temperature variation.
    Type: Application
    Filed: January 16, 2009
    Publication date: July 23, 2009
    Inventor: Kenji IGARASHI
  • Patent number: 7526070
    Abstract: The angle of each collimator plate with respect to an X ray focal point is determined by fitting the collimator plate in grooves formed in upper and lower supports each having an integral structure. In addition, the warpage of each collimator plate is corrected and its flatness is maintained by fitting the periphery of the collimator plate which is on the X ray detector side in a corresponding groove of an abutment plate provided on the X ray detection surface side of the upper and lower supports. Furthermore, each collimator plate is supported by the corresponding grooves of the upper and lower supports and the corresponding groove of the abutment plate on at least three sides.
    Type: Grant
    Filed: April 14, 2006
    Date of Patent: April 28, 2009
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Medical Systems Corporation
    Inventors: Kenji Igarashi, Masaharu Shimizu, Akiji Wakabayashi, Yasuo Saito, Machiko Iso, Tsuguo Kishi, Shigeru Sakuta, Masaru Kitamura, Ryuhachiro Doji, Hideki Ide, Shuya Nambu, Masahiko Yamazaki, Katsuya Yamada, Yasutada Nakagawa