Patents by Inventor Junichi Ishikawa

Junichi Ishikawa 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: 9575427
    Abstract: A toner includes a crystalline polyester resin in an amount equal to or greater than 25% by mass. The toner satisfies the following formula when the toner is tested using a capillary rheometry measurement during which a pellet of the toner is pressed by a member while being heated: 0.3?(first temperature?second temperature)/(second temperature?third temperature)?1, where the first temperature is a temperature at which the member falls 4 mm, the second temperature is a temperature at which the member falls 2 mm, and the third temperature is a temperature at which the member starts to fall.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: February 21, 2017
    Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki Kaisha
    Inventors: Takashi Urabe, Taishi Takano, Satoshi Araki, Junichi Ishikawa, Maiko Yoshida
  • Publication number: 20170017172
    Abstract: A toner includes a crystalline polyester resin in an amount equal to or greater than 25% by mass. The toner satisfies the following formula when the toner is tested using a capillary rheometry measurement during which a pellet of the toner is pressed by a member while being heated: 0.3?(first temperature?second temperature)/(second temperature?third temperature)?1, where the first temperature is a temperature at which the member falls 4 mm, the second temperature is a temperature at which the member falls 2 mm, and the third temperature is a temperature at which the member starts to fall.
    Type: Application
    Filed: July 15, 2015
    Publication date: January 19, 2017
    Inventors: Takashi URABE, Taishi TAKANO, Satoshi ARAKI, Junichi ISHIKAWA, Maiko YOSHIDA
  • Patent number: 9528930
    Abstract: An adhering matter determination portion includes an irradiation portion, a light receiving portion and a determination portion. The irradiation portion radiates a light to a plurality of different areas of a transparent plate. The light receiving portion converts reflected waves reflected at the different areas into electrical signals. The determination portion compares at least one of detection signals outputted from the light receiving portion with a determination threshold. When the detection signal is lower than the determination threshold, the determination portion determines that there is an adhering matter on the transparent plate. The determination portion compares the detection signals. When a difference of the detection signals is higher than a condensation determination value, the determination portion determines that the adhering matter is raindrops.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: December 27, 2016
    Assignee: DENSO CORPORATION
    Inventors: Junichi Ishikawa, Jun Tarui, Kiyoshi Otsuka, Makiko Sugiura, Takahiko Yoshida, Tomohide Ariki
  • Publication number: 20160327880
    Abstract: A toner includes a plurality of toner particles containing a binder resin and one or more microcapsules that contain a fragrant material. A ratio of a number of toner particles that contain at least one microcapsule in a region from a surface thereof to 1 ?m in depth with respect to a total number of toner particles in the region is equal to or greater than 60%.
    Type: Application
    Filed: April 28, 2016
    Publication date: November 10, 2016
    Inventors: Maiko YOSHIDA, Satoshi ARAKI, Taishi TAKANO, Takashi URABE, Junichi ISHIKAWA
  • Publication number: 20160070190
    Abstract: A toner includes first toner particles and second toner particles. Each of the first toner particles includes a plate-like colorant particle covered with binder resin particles, and a volume average size of the plate-like colorant particle is equal to or greater than 6 ?m. Each of the second toner particles includes at least one of a binder resin and a releasing agent and not including a colorant, an aspect ratio of the second toner particles is equal to or smaller than 3, and a content ratio of the releasing agents with respect to the second toner particles is equal to or greater than 4 wt % and equal to or smaller than 24 wt %. A content ratio of the second toner particles with respect to the first toner particles is greater than 1 wt % and equal to or smaller than 75 wt %.
    Type: Application
    Filed: July 28, 2015
    Publication date: March 10, 2016
    Inventors: Junichi ISHIKAWA, Takashi URABE, Taishi TAKANO, Satoshi ARAKI, Maiko YOSHIDA
  • Patent number: 9234983
    Abstract: A rain sensor equipped to a transparent substrate includes a light emitter emitting irradiation lights toward the transparent substrate, light receivers receiving reflected lights of the irradiation lights being reflected on the transparent substrate, a defining section defining an incident angle of each reflected light with respect to each light receiver, and a detection section detecting rainfall amount based on signals output from the light receivers. The light emitter emits the irradiation lights toward an irradiation region defined on the transparent substrate. The irradiation region is divided into multiple detection regions. The detection regions correspond to respective light receivers. The defining section defines the incident angle of each reflected light reflected on the detection region such that each reflected light enters corresponding light receiver. The detection section detects the rainfall amount based on the signals output from the light receivers corresponding to the irradiation regions.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: January 12, 2016
    Assignee: DENSO CORPORATION
    Inventors: Makiko Sugiura, Yasuaki Makino, Junichi Ishikawa
  • Publication number: 20150346089
    Abstract: An adhering matter determination portion includes an irradiation portion, a light receiving portion and a determination portion. The irradiation portion radiates a light to a plurality of different areas of a transparent plate. The light receiving portion converts reflected waves reflected at the different areas into electrical signals. The determination portion compares at least one of detection signals outputted from the light receiving portion with a determination threshold. When the detection signal is lower than the determination threshold, the determination portion determines that there is an adhering matter on the transparent plate. The determination portion compares the detection signals. When a difference of the detection signals is higher than a condensation determination value, the determination portion determines that the adhering matter is raindrops.
    Type: Application
    Filed: January 16, 2014
    Publication date: December 3, 2015
    Inventors: Junichi ISHIKAWA, Jun TARUI, Kiyoshi OTSUKA, Makiko SUGIURA, Takahiko YOSHIDA, Tomohide ARIKI
  • Patent number: 9013284
    Abstract: A vehicle presence notification apparatus may include a dynamic speaker for radiating a notification sound from a vehicle in an audible frequency, and a sound pressure supplement unit is provided to control a sound pressure of the notification sound. The apparatus may further include a parametric speaker for generating a supersonic sound of the notification sound from a supersonic sound generation unit. The supersonic sound is emitted from a sound emission opening. The parametric speaker may further include a reflected sound pressure detecting unit for detecting a sound pressure generated by a reflection of the supersonic sound from the sound emission opening. The sound pressure supplement unit increases the sound pressure of the notification sound radiated by the dynamic speaker based on the sound pressure detected by the reflected sound pressure detecting unit.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: April 21, 2015
    Assignee: Denso Corporation
    Inventors: Toshiaki Nakayama, Junichi Ishikawa
  • Publication number: 20150036143
    Abstract: A rain sensor equipped to a transparent substrate includes a light emitter emitting irradiation lights toward the transparent substrate, light receivers receiving reflected lights of the irradiation lights being reflected on the transparent substrate, a defining section defining an incident angle of each reflected light with respect to each light receiver, and a detection section detecting rainfall amount based on signals output from the light receivers. The light emitter emits the irradiation lights toward an irradiation region defined on the transparent substrate. The irradiation region is divided into multiple detection regions. The detection regions correspond to respective light receivers. The defining section defines the incident angle of each reflected light reflected on the detection region such that each reflected light enters corresponding light receiver. The detection section detects the rainfall amount based on the signals output from the light receivers corresponding to the irradiation regions.
    Type: Application
    Filed: March 25, 2013
    Publication date: February 5, 2015
    Inventors: Makiko Sugiura, Yasuaki Makino, Junichi Ishikawa
  • Patent number: 8829035
    Abstract: A compound depicted by the formula below, or a pharmaceutically acceptable salt or solvate thereof. wherein, R1 represents (1) a C3-6 alkyl group, (2) a C1-6 alkyl group substituted with one or more substituent group(s) selected from those consisting a halogen atom, etc., (3) a C3-10 non-aromatic cyclic hydrocarbon group or a 5- to 6-membered non-aromatic heterocyclic group which respectively is optionally substituted with one or more substituent group(s) selected from those consisting an oxo group, etc., (4) an aromatic cyclic hydrocarbon group substituted with one or more substituent selected from the group consisting halogen atom and C1-4 alkoxy group; X represents NH, O, or S; Y represents CH or N; Z represents N or a C—R2; R2 represents (1) hydrogen atom, (2) a C1-6 alkyl group, a C2-6 alkenyl group or a C2-6 alkynyl group that respectively is optionally substituted with one or more substituent group(s) selected from among those consisting (a) a halogen atom, etc.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: September 9, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Junichi Ishikawa, Koichi Saito, Norihisa Ohe, Kentaro Kobayashi
  • Patent number: 8748363
    Abstract: The present invention relates to a solvent composition for removing radioactive substance, characterized by comprising at least one selected from hydrofluorocarbon, hydrofluoroether, and perfluoroketone as a medium for transporting the radioactive substance, and a method for removing a radioactive substance characterized by using the solvent composition for removing.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: June 10, 2014
    Assignee: Du Pont-Mitsui Fluorochemicals Co., Ltd.
    Inventors: Kazuhito Nagashima, Junichi Ishikawa, Hideaki Kikuchi
  • Patent number: 8741526
    Abstract: There is provided a developer that has excellent positive charging characteristics and charging stability, and which is compatible with high-speed developing. The developer of the invention contains toner particles and an insulating liquid, wherein a fatty acid ester is contained as the insulating liquid, a substance A expressed by the following formula (1) and/or a substance B expressed by the following formula (2) is further contained, and the total percentage in which substance A and substance B are contained is at least 0.1 wt % and no more than 3.0 wt %.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: June 3, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takashi Teshima, Junichi Ishikawa
  • Publication number: 20130158328
    Abstract: The invention provides a process for producing an unsaturated hydrocarbon by dehydrogenating a hydrocarbon into a corresponding unsaturated hydrocarbon with use of a nontoxic catalyst having a long catalytic life. The process for producing unsaturated hydrocarbons includes a step of dehydrogenating a hydrocarbon into a corresponding unsaturated hydrocarbon by contacting the hydrocarbon with a catalyst A that is obtained by supporting zinc and a Group VIIIA metal on a silicate obtained by removing at least part of the boron atoms from a borosilicate.
    Type: Application
    Filed: August 9, 2011
    Publication date: June 20, 2013
    Inventors: Phala Heng, Shinichiro Ichikawa, Junichi Ishikawa, Hirokazu Ikenaga, Jun Kawahara, Yoshida Goa
  • Patent number: 8426095
    Abstract: Disclosed is a decolorable toner containing a binder resin and a coloring agent which contains a color former compound and a color developing agent and has a capsule structure such that it is covered with an outer shell, and having a volume average particle diameter of from 5.0 to 15.0 ?m and a number-based particle size distribution CV of 35% or less.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: April 23, 2013
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Takayasu Aoki, Junichi Ishikawa, Tsuyoshi Itou
  • Publication number: 20120328978
    Abstract: According to one embodiment, a developing agent includes a binder resin and a coloring agent, wherein when the developing agent is subjected to methanol extraction, and a filtrate of the resulting extract is subjected to HPLC measurement, the ratio of a peak area at a retention time of 10 minutes or less to the total peak area is 15.0% or less.
    Type: Application
    Filed: June 19, 2012
    Publication date: December 27, 2012
    Applicants: TOSHIBA TEC KABUSHIKI KAISHA, KABUSHIKI KAISHA TOSHIBA
    Inventor: Junichi Ishikawa
  • Publication number: 20120288792
    Abstract: There is provided a developer that has excellent positive charging characteristics and charging stability, and which is compatible with high-speed developing. The developer of the invention contains toner particles and an insulating liquid, wherein a fatty acid ester is contained as the insulating liquid, a substance A expressed by the following formula (1) and/or a substance B expressed by the following formula (2) is further contained, and the total percentage in which substance A and substance B are contained is at least 0.1 wt % and no more than 3.0 wt %.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 15, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takashi TESHIMA, Junichi ISHIKAWA
  • Patent number: 8288058
    Abstract: This invention provides a binder for a fuel cell which has high adhesion, low methanol solubility, high methanol permeability and high proton conductivity, a composition for electrode formation, an electrode for a fuel cell, and a fuel cell using them. The binder is particularly suitable for a binder for a direct methanol type fuel cell which requires high proton conductivity. The binder for a fuel cell comprises a block copolymer which comprises a block having a repeating structural unit of a divalent aromatic group that contains a protonic acid group and a block having a repeating structural unit of a divalent aromatic group that does not contain a protonic acid group, and which has a glass transition temperature (Tg) of 180° C. or less. In particular, it is preferable that the block copolymer has an ion exchange group equivalent of from 200 to 1,000 g/mole and a weight retention ratio of 90% or more as measured by immersion in a 64 weight % aqueous methanol solution at 25° C. for 24 hours.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: October 16, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Masahiro Toriida, Junichi Ishikawa, Takehiko Omi, Satoko Fujiyama, Kuniyuki Takamatsu, Shoji Tamai
  • Publication number: 20120242468
    Abstract: A vehicle presence notification apparatus may include a dynamic speaker for radiating a notification sound from a vehicle in an audible frequency, and a sound pressure supplement unit is provided to control a sound pressure of the notification sound. The apparatus may further include a parametric speaker for generating a supersonic sound of the notification sound from a supersonic sound generation unit. The supersonic sound is emitted from a sound emission opening. The parametric speaker may further include a reflected sound pressure detecting unit for detecting a sound pressure generated by a reflection of the supersonic sound from the sound emission opening. The sound pressure supplement unit increases the sound pressure of the notification sound radiated by the dynamic speaker based on the sound pressure detected by the reflected sound pressure detecting unit.
    Type: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: DENSO CORPORATION
    Inventors: Toshiaki Nakayama, Junichi Ishikawa
  • Publication number: 20120115856
    Abstract: A compound depicted by the formula below, or a pharmaceutically acceptable salt or solvate thereof. wherein, R1 represents (1) a C3-6 alkyl group, (2) a C1-6 alkyl group substituted with one or more substituent group(s) selected from those consisting a halogen atom, etc., (3) a C3-10 non-aromatic cyclic hydrocarbon group or a 5- to 6-membered non-aromatic heterocyclic group which respectively is optionally substituted with one or more substituent group(s) selected from those consisting an oxo group, etc., (4) an aromatic cyclic hydrocarbon group substituted with one or more substituent selected from the group consisting halogen atom and C1-4 alkoxy group; X represents NH, O, or S; Y represents CH or N; Z represents N or a C—R2; R2 represents (1) hydrogen atom, (2) a C1-6 alkyl group, a C2-6 alkenyl group or a C2-6 alkynyl group that respectively is optionally substituted with one or more substituent group(s) selected from among those consisting (a) a halogen atom, etc.
    Type: Application
    Filed: May 28, 2010
    Publication date: May 10, 2012
    Inventors: Junichi Ishikawa, Koichi Saito, Norihisa Ohe, Kentaro Kobayashi
  • Publication number: 20120070771
    Abstract: Disclosed is an electrophotographic toner, comprising: toner base particles having a volume average particle diameter of 3 ?m or more and 7 ?m or less; OTES-treated silica particles which are treated with octyltriethoxysilane (OTES) and are externally added to the toner base particles; and silica-coated titanium oxide particles which are coated with silica and are externally added to the toner base particles along with the OTES-treated silica particles, wherein the ratio (A) of the amount of the OTES-treated silica particles to the amount of the toner base particles, the ratio (B) of the amount of the silica-coated titanium oxide particles to the amount of the toner base particles, and the ratio (C) of the amount of particles to be externally added to the toner base particles to the amount of the toner base particles satisfy the following relations: 1% by mass?(A)?6.9% by mass; 0.1% by mass?(B)?2% by mass; 3% by mass?(C)?7% by mass; and 0.15?(A)/(C)<1.
    Type: Application
    Filed: August 31, 2011
    Publication date: March 22, 2012
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Satoshi Araki, Junichi Ishikawa