Patents by Inventor Toshihisa Ishihara

Toshihisa Ishihara 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).

  • Publication number: 20230007767
    Abstract: A resin sheet is provided having low dielectric properties, and a circuit board material using such a sheet. The resin sheet includes a resin layer containing a cyclic polyolefin resin copolymer having a crystal melting peak temperature of less than 100° C., the resin sheet having a dielectric loss tangent at 12 GHz of less than 0.005.
    Type: Application
    Filed: August 26, 2022
    Publication date: January 5, 2023
    Applicant: MCPP Innovation LLC
    Inventors: Yuuko Hayakawa, Toshihisa Ishihara, Jiro Sano
  • Publication number: 20220121134
    Abstract: The present invention relates to a liquid developer containing a carrier liquid and a developer component, in which the developer component contains an ethylene-(meth)acrylic acid copolymer A and a block copolymer B? containing a hard segment and a soft segment, and the hard segment is a vinyl alicyclic hydrocarbon polymer, an image forming method using the liquid developer, a liquid developer cartridge having the liquid developer and an image forming apparatus having the liquid developer.
    Type: Application
    Filed: January 3, 2022
    Publication date: April 21, 2022
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Akiteru Fujii, Yuqing Xu, Yuuta Kumano, Toshihisa Ishihara
  • Patent number: 11268214
    Abstract: The present invention provides a filament for material extrusion 3D printer molding, which affords a molded article having soft texture and excellent heat resistance and among others, exhibits good moldability in molding by a material extrusion 3D printer. The present invention relates to a filament for material extrusion 3D printer molding, including a thermoplastic elastomer which contains at least a specific block copolymer and in which the ratio between storage modulus and loss modulus measured at 200° C. and 100 Hz by dynamic viscoelasticity measurement is in a specific range.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: March 8, 2022
    Assignees: MCPP Innovation LLC, Mitsubishi Chemical Corporation
    Inventors: Jiro Sano, Toshihisa Ishihara, Shigeyuki Furomoto
  • Publication number: 20210015705
    Abstract: A multilayer body includes a base material layer containing a polypropylene resin and a heat seal layer containing a cyclic polyolefin. The cyclic polyolefin is a hydrogenated block copolymer having a hydrogenated aromatic vinyl polymer block unit which is a hydrogenated polymer block composed of aromatic vinyl monomer units and a hydrogenated conjugated diene polymer block unit which is a hydrogenated polymer block composed of conjugated diene monomer units, and the hydrogenated block copolymer has at least two hydrogenated aromatic vinyl polymer block units and at least one hydrogenated conjugated diene polymer block unit.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 21, 2021
    Applicant: MCPP Innovation LLC
    Inventors: Naoya Watanabe, Toshihisa Ishihara
  • Patent number: 10480098
    Abstract: The present invention provides a filament for three-dimensional printer molding which includes a resin that can be molded by a three-dimensional printer in a wide temperature range and from which a crystalline soft resin molded article excellent in terms of flexible texture etc. can be produced; and a method for producing a crystalline soft resin molded article, wherein the filament for three-dimensional printer molding includes a polyester-based thermoplastic elastomer wherein a durometer D hardness (JIS K6253-1993) is 40 or less and thermal properties measured with a differential scanning calorimeter satisfy the following conditions: a melting peak temperature (A) is 120 to 220° C. by heating at 10° C./min; a crystallization peak temperature (B) is 60 to 160° C. by cooling at 10° C./min; and the crystallization peak observed during cooling at 10° C./min has a half-value temperature width of 10 to 30° C.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 19, 2019
    Assignees: MCPP Innovation LLC, Mitsubishi Chemical Corporation
    Inventors: Toshihisa Ishihara, Shigeyuki Furomoto
  • Publication number: 20180038015
    Abstract: The present invention provides a filament for material extrusion 3D printer molding, which affords a molded article having soft texture and excellent heat resistance and among others, exhibits good moldability in molding by a material extrusion 3D printer. The present invention relates to a filament for material extrusion 3D printer molding, including a thermoplastic elastomer which contains at least a specific block copolymer and in which the ratio between storage modulus and loss modulus measured at 200° C. and 100 Hz by dynamic viscoelasticity measurement is in a specific range.
    Type: Application
    Filed: October 20, 2017
    Publication date: February 8, 2018
    Applicants: MCPP Innovation LLC, MITSUBISHI CHEMICAL MEDIA CO., LTD.
    Inventors: Jiro SANO, Toshihisa ISHIHARA, Shigeyuki FUROMOTO
  • Publication number: 20170173869
    Abstract: The present invention provides a filament for three-dimensional printer molding which includes a resin that can be molded by a three-dimensional printer in a wide temperature range and from which a crystalline soft resin molded article excellent in terms of flexible texture etc. can be produced; and a method for producing a crystalline soft resin molded article, wherein the filament for three-dimensional printer molding includes a polyester-based thermoplastic elastomer wherein a durometer D hardness (JIS K6253-1993) is 40 or less and thermal properties measured with a differential scanning calorimeter satisfy the following conditions: a melting peak temperature (A) is 120 to 220° C. by heating at 10° C./min; a crystallization peak temperature (B) is 60 to 160° C. by cooling at 10° C./min; and the crystallization peak observed during cooling at 10° C./min has a half-value temperature width of 10 to 30° C.
    Type: Application
    Filed: March 3, 2017
    Publication date: June 22, 2017
    Applicants: MCPP Innovation LLC, MITSUBISHI KAGAKU MEDIA CO., LTD.
    Inventors: Toshihisa ISHIHARA, Shigeyuki Furomoto
  • Patent number: 9127112
    Abstract: The present invention provides a hydrogenated block copolymer which has an excellent balance in a transparency, optical property, flexibility, mechanical property, moldability, heat resistance, gas barrier property, low moisture absorbency and non-adsorptive property of chemical. Also, the present invention has an object to provide a resin composition containing the hydrogenated block copolymer as a resin component, and a film and container containing the composition. The present invention relates to a hydrogenated block copolymer containing a Block A of a hydrogenated vinyl aromatic polymer and a Block B of a polymer containing isobutylene.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: September 8, 2015
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Naoyuki Kosaka, Toshihisa Ishihara, Kenjiro Takayanagi
  • Publication number: 20140213728
    Abstract: The present invention provides a hydrogenated block copolymer which has an excellent balance in a transparency, optical property, flexibility, mechanical property, moldability, heat resistance, gas barrier property, low moisture absorbency and non-adsorptive property of chemical. Also, the present invention has an object to provide a resin composition containing the hydrogenated block copolymer as a resin component, and a film and container containing the composition. The present invention relates to a hydrogenated block copolymer containing a Block A of a hydrogenated vinyl aromatic polymer and a Block B of a polymer containing isobutylene.
    Type: Application
    Filed: March 31, 2014
    Publication date: July 31, 2014
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Naoyuki KOSAKA, Toshihisa Ishihara, Kenjiro Takayanagi
  • Patent number: 6646435
    Abstract: An angular position detecting apparatus using a magnetic detecting element, which can voluntary widely set an output change characteristic of the magnetic detecting element with respect to angular positions. An angular position detecting apparatus includes a cylindrical yoke, and a magnet fixed to a predetermined position in the cylindrical yoke. A magnetic detecting element, which is fixed to a rotor, is provided in a magnetic field generated between the magnet and the cylindrical yoke, so that a position of the magnetic detecting element is shifted from a rotation axis P of the rotor by a predetermined distance r. A ferromagnetic thin film magnetic resistance element applies a magnetic field which has intensity so that outputs from the elements are saturated. As a result, the magnetic detecting element generates outputs depending only on a magnetic flux detection angle &thgr;s independent of an influence of changes of magnetic field intensity due to temperature changes.
    Type: Grant
    Filed: July 12, 2000
    Date of Patent: November 11, 2003
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Tsutomu Nakamura, Toshihisa Ishihara, Takashi Hamaoka
  • Patent number: 6634332
    Abstract: An engine start-stop control system for an automotive vehicle includes a first step for supplying current to a solenoid of a magnet switch of a starter at 100% duty ratio until a first predetermined time passes, a second step for supplying current to the solenoid at a duty ratio that is less than 100% after the first predetermined period passes until a second predetermined period passes, and a third step for supplying current to the solenoid at 100% duty ratio after the second predetermined period passes until a third predetermined period passes. Therefore, a pinion of the starter reaches a ring gear of the engine in a short time and engages the ring gear with a moderate impacting shock, thereby preventing the pinion and the ring gear from being damaged.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: October 21, 2003
    Assignee: Denso Corporation
    Inventors: Mikio Saito, Masahiko Osada, Toshihisa Ishihara
  • Patent number: 6501265
    Abstract: An angular position detection device has a rotor that comprises two magnets and a primary yoke, and a stator that comprises a pair of auxiliary yokes and a magnetism detection element. The rotor is fixed to a rotary shaft of an object to be detected. The primary yoke forms a magnetic circuit in a ring, and the magnets are configured so that the intensity distribution of the magnetic field is asymmetric with respect to the center of rotation of the rotor. The magnetism detection element is placed in a gap between the auxiliary yokes. This stator is disposed in the inside of the rotor so that an air gap between the rotor and the stator varies gradually in the circumferential direction. Thus, the magnetism detection element is enabled to produce a linear output over a range wider than 180°.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: December 31, 2002
    Assignee: Denso Corporation
    Inventors: Tsutomu Nakamura, Toshihisa Ishihara, Kenji Takeda, Yoshiyuki Kono
  • Publication number: 20020017260
    Abstract: An engine start-stop control system for an automotive vehicle includes a first step for supplying current to a solenoid of a magnet switch of a starter at 100% duty ratio until a first predetermined time passes, a second step for supplying current to the solenoid at a duty ratio that is less than 100% after the first predetermined period passes until a second predetermined period passes, and a third step for supplying current to the solenoid at 100% duty ratio after the second predetermined period passes until a third predetermined period passes. Therefore, a pinion of the starter reaches a ring gear of the engine in a short time and engages the ring gear with a moderate impacting shock, thereby preventing the pinion and the ring gear from being damaged.
    Type: Application
    Filed: August 10, 2001
    Publication date: February 14, 2002
    Applicant: DENSO CORPORATION
    Inventors: Mikio Saito, Masahiko Osada, Toshihisa Ishihara
  • Publication number: 20010026153
    Abstract: An angular position detection device has a rotor that comprises two magnets and a primary yoke, and a stator that comprises a pair of auxiliary yokes and a magnetism detection element. The rotor is fixed to a rotary shaft of an object to be detected. The primary yoke forms a magnetic circuit in a ring, and the magnets are configured so that the intensity distribution of the magnetic field is asymmetric with respect to the center of rotation of the rotor. The magnetism detection element is placed in a gap between the auxiliary yokes. This stator is disposed in the inside of the rotor so that an air gap between the rotor and the stator varies gradually in the circumferential direction. Thus, the magnetism detection element is enabled to produce a linear output over a range wider than 180°.
    Type: Application
    Filed: March 20, 2001
    Publication date: October 4, 2001
    Inventors: Tsutomu Nakamura, Toshihisa Ishihara, Kenji Takeda, Yoshiyuki Kono
  • Patent number: 6032110
    Abstract: Markers each comprising an electromagnetic coil are installed on the surface of a road at a lateral center line of a running lane of the road at predetermined intervals. Provided for each of the markers, a driving signal generating circuit drives the associated marker so that the marker transmits an alternating current magnetic field. Alternating current magnetic field receiving devices each comprising an electromagnetic coil are installed on the front bumper of a vehicle at positions symmetrical with respect to the lateral center line of the vehicle. While the vehicle is running, the alternating current magnetic field receiving devices sequentially receive the alternating current magnetic fields generated by the markers one field after another. A microcomputer receives detection voltages generated by the alternating current magnetic field receiving devices through detection circuits and determines the lateral position of the vehicle from the detection voltages.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: February 29, 2000
    Assignee: Nippon Soken, Inc.
    Inventors: Toshihisa Ishihara, Takahide Kitahara, Shigeto Tsuge
  • Patent number: 5653515
    Abstract: An improved control system for antilock brake control for an automotive vehicle which includes an excessive brake pedal-depressed force alarm unit. The control system determines a slip ratio and a slip ratio variation of a wheel to derive slippage conditions of the wheel, and provides an alarm to a driver when a brake pedal-depressed force exerted on a brake pedal is too great, causing wheel slippage to occur, especially during traveling on a slippery road surface such as a snowy road.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: August 5, 1997
    Assignee: Nippon Soken, Inc.
    Inventors: Kenji Takeda, Mitsuo Inagaki, Toshihisa Ishihara, Kazuyuki Yamashita, Shuichi Kohno
  • Patent number: 5253525
    Abstract: An angular velocity sensor having a casing in which a disk shaped permanent magnet member is arranged so that it floats on a magnetic fluid filled in the casing. A Hall motor is provided for rotating the permanent magnet about its axis in the casing, and a detection unit is provided detecting an inclination of the magnet member about an axis which is transverse to the axis about which the magnet member rotates, which inclination is generated when the sensor is subjected to an angular movement. An angular velocity of such an angular movement is calculated from the detected degree of inclination of the magnet member.
    Type: Grant
    Filed: March 1, 1991
    Date of Patent: October 19, 1993
    Assignees: Nippon Soken, Inc, Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinji Fukui, Takaharu Idogaki, Toshihisa Ishihara, Hideki Kusunoki, Hideo Inoue
  • Patent number: 4984463
    Abstract: An acceleration sensor for detecting an acceleration in a plane, and having a housing, and a disk magnet arranged in a magnetic fludi stored in the housing. The movement of disk magnet is limited, i.e., a translational movement or rotational movement thereof can occur only in the plane, by projections formed in the housing, between which projections portions of the magnetic fluid having an increased density are formed adjacent to the poles of the disk magnet so that only a translational movement is allowed, or by small circumferential walls between the housing and the disk magnet and radial projections formed between end walls of the housing and disk magnet so that only a rotational movement is allowed. A Hall element issues a signal corresponding to a position of the disk magnet, to thereby determine the acceleration rate.
    Type: Grant
    Filed: September 26, 1989
    Date of Patent: January 15, 1991
    Assignees: Nippon Soken, Inc., Toyota Jidosha Kabushiki Kaisha
    Inventors: Takaharu Idogaki, Ikuo Hayashi, Toshihisa Ishihara, Hideo Inoue, Tatsuo Sugitani
  • Patent number: 4922753
    Abstract: An acceleration sensor including a magnetic fluid, a permanent magnet emplaced movably in the magnetic fluid, a nonmagnetic case, in which case the magnetic fluid and the permanent magnet are sealed and from which case air is substantially excluded, the shape of internal receptacle of the case dominating the shape of the magnetic fluid, whereby the path of the magnetic flux generated by the permanent magnet is restricted and the permanent magnet in the magnetic fluid is given an automatic positioning function, a unit for detecting the position of the permanent magnet, and a processing circuit for processing signals from the detection unit.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: May 8, 1990
    Assignees: Nippon Soken, Inc., Toyoto Jidosha Kabushiki Kaisha
    Inventors: Takaharu Idogaki, Ikuo Hayashi, Toshihisa Ishihara, Tatsuo Sugitani, Hideo Inoue