Patents by Inventor Fumitaka Yoshikawa

Fumitaka Yoshikawa 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: 11508183
    Abstract: A biometric information authentication device includes an authentication unit to change an authentication threshold value used for authentication to increase difficulty of authentication when authentication of biometric information by checking against registered biometric information is unsuccessful a predetermined number of times.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: November 22, 2022
    Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Rijin Owaki, Yosuke Ohashi, Fumitaka Yoshikawa
  • Patent number: 11400735
    Abstract: A printing unit includes a platen lock mechanism for switching between a locked state and an unlock state of the platen roller; and an urging member for urging the lock arm. The head unit has receiving grooves receiving the platen bearings through an opening. A lock arm presses the platen bearings when the operation lever is at the lock position, and is configured to allow disengagement of the platen bearings from the receiving groove through the opening by being swung from the lock position toward the unlock position side. The lock arm includes a pushing-up arm configured to push the platen bearings from the receiving groove toward the opening side along with movement of the operation lever from the lock position toward the unlock position. An urging member urges the lock arm toward the platen unit side.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: August 2, 2022
    Assignee: SEIKO INSTRUMENTS INC.
    Inventor: Fumitaka Yoshikawa
  • Publication number: 20220135488
    Abstract: (Object) An object is to suppress the peeling and lamination misalignment of ceramic green sheets without deteriorating the sheet strength. (Solution) A ceramic green sheet lamination aid comprising a compound represented by formula (1). Z—[O-(AO)n-H]x??(1) (Z represents a residual group of a compound having a number of carbons group of 1 to 22 and having hydroxyl groups of 1 to 6 in which all of said hydroxyl groups are removed; x represents a number of 1 to 6; AO represents an oxyalkylene group having a number of carbons of 2 to 4; n represents a number of 5 to 500; x×n is in a range of 5 to 500; and a weight ratio of oxyethylene group EO contained in the oxyalkylene group AO having the number of carbons of 2 to 4 is 0 to 80 weight %.
    Type: Application
    Filed: March 5, 2020
    Publication date: May 5, 2022
    Applicant: NOF CORPORATION
    Inventors: Fumitaka YOSHIKAWA, Kenta MATSUZAKI, Kazuki SUNADA
  • Patent number: 11225623
    Abstract: It is provided an ester for a refrigerator oil and of mixed alcohols and mixed monocarboxylic acids. The mixed alcohols include dipentaerythritol and tripentaerythritol in a mass ratio of 90/10 to 99.7/0.3, and the mixed monocarboxylic acids include n-pentanoic acid and 2-methyl butanoic acid in a mass ratio of 50/50 to 80/20. The ester has a kinematic viscosity of 50 to 150 mm2/s at 40° C.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 18, 2022
    Assignee: NOF CORPORATION
    Inventors: Takeshi Kajiki, Fumitaka Yoshikawa, Seita Ueda
  • Publication number: 20210207050
    Abstract: It is provided an ester for a refrigerator oil and of mixed alcohols and mixed monocarboxylic acids. The mixed alcohols include dipentaerythritol and tripentaerythritol in a mass ratio of 90/10 to 99.7/0.3, and the mixed monocarboxylic acids include n-pentanoic acid and 2-methyl butanoic acid in a mass ratio of 50/50 to 80/20. The ester has a kinematic viscosity of 50 to 150 mm2/s at 40° C.
    Type: Application
    Filed: December 19, 2016
    Publication date: July 8, 2021
    Applicant: NOF CORPORATION
    Inventors: Takeshi KAJIKI, Fumitaka YOSHIKAWA, Seita UEDA
  • Publication number: 20210173911
    Abstract: An on-board device includes a storage unit that stores personal information of a user registered to a vehicle, and a control unit that deletes the personal information of the user by controlling the storage unit when the vehicle has stayed at a certain location for a predetermined period.
    Type: Application
    Filed: November 16, 2018
    Publication date: June 10, 2021
    Inventors: Yosuke OHASHI, Rijin OWAKI, Fumitaka YOSHIKAWA, Yuji FUKANO
  • Publication number: 20210162781
    Abstract: A printing unit includes a platen lock mechanism for switching between a locked state and an unlock state of the platen roller; and an urging member for urging the lock arm. The head unit has receiving grooves receiving the platen bearings through an opening. A lock arm presses the platen bearings when the operation lever is at the lock position, and is configured to allow disengagement of the platen bearings from the receiving groove through the opening by being swung from the lock position toward the unlock position side. The lock arm includes a pushing-up arm configured to push the platen bearings from the receiving groove toward the opening side along with movement of the operation lever from the lock position toward the unlock position. An urging member urges the lock arm toward the platen unit side.
    Type: Application
    Filed: November 30, 2020
    Publication date: June 3, 2021
    Inventor: Fumitaka YOSHIKAWA
  • Publication number: 20210073503
    Abstract: A fingerprint authentication device includes an authentication unit by which the smallest detection value among detection values resulting from a plurality of touches performed on a detection surface to register a fingerprint is set as a detection threshold for fingerprint detection performed after the registration.
    Type: Application
    Filed: December 13, 2018
    Publication date: March 11, 2021
    Inventors: Yosuke OHASHI, Rijin OWAKI, Fumitaka YOSHIKAWA
  • Publication number: 20200384953
    Abstract: An on-board device includes a storage unit that stores personal information of a user of a vehicle, and a control unit that deletes the personal information of the user stored in the storage unit, based on an input of an instruction signal that is output when relevant information associating information of the vehicle with information of the user of the vehicle is updated.
    Type: Application
    Filed: November 16, 2018
    Publication date: December 10, 2020
    Inventors: Yosuke OHASHI, Rijin OWAKI, Fumitaka YOSHIKAWA
  • Publication number: 20200369243
    Abstract: An on-board device includes a storage unit that stores biometric information of a user of a vehicle that is used for authentication, and a control unit that increases difficulty of authenticating biometric information not having been used for authentication for a predetermined period or deletes such biometric information from the storage unit.
    Type: Application
    Filed: November 16, 2018
    Publication date: November 26, 2020
    Inventors: Rijin OWAKI, Yosuke OHASHI, Fumitaka YOSHIKAWA, Yuji FUKANO
  • Publication number: 20200353895
    Abstract: A biometric information authentication device includes an authentication unit to change an authentication threshold value used for authentication to increase difficulty of authentication when authentication of biometric information by checking against registered biometric information is unsuccessful a predetermined number of times.
    Type: Application
    Filed: November 28, 2018
    Publication date: November 12, 2020
    Inventors: Rijin OWAKI, Yosuke OHASHI, Fumitaka YOSHIKAWA
  • Patent number: 9012583
    Abstract: The present invention provides a flow improver for oils and fats, by which a sufficient improvement in the flowability of oils and fats can be achieved, when oils and fats are used as fuels. This flow improver for oils and fats comprises a polymer including constitutional units (I), (II), and (III), and having a weight-average molecular weight in the range of 5,000 to 100,000. The molar fraction a of the constitutional unit (I) is in the range of 0.4 to 0.8, the molar fraction b of the constitutional unit (II) is in the range of 0.1 to 0.3, and the molar fraction c of the constitutional unit (III) is in the range of 0.1 to 0.3.
    Type: Grant
    Filed: February 2, 2011
    Date of Patent: April 21, 2015
    Assignee: NOF Corporation
    Inventors: Fumitaka Yoshikawa, Hideki Kawamoto, Keiji Hirao
  • Patent number: 8920523
    Abstract: A fuel oil flow improver comprising the ester compound (A) below and the copolymer (B) below, which is the fuel oil flow improver in which the mass ratio [(A)/(B)] of the ester compound (A) and the copolymer (B) is from 30/70 to 70/30. (A) The ester compound represented by Formula (I) below. R1 is e.g. a linear saturated C19 alkyl group, and X, Y, and Z each represent an integer of 1 or higher. (B) A copolymer of a weight-average molecular weight of 5,000 to 50,000 obtained by polymerizing (b1) to (b3) below at a molar fraction of (b1)/(b2)/(b3)=0.4 to 0.8/0.1 to 0.3/0.1 to 0.3. R2 is e.g. a linear saturated C14 alkyl group. R3 is e.g. a linear saturated C10 alkyl group. R4 is e.g. a linear saturated C12 alkyl group.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: December 30, 2014
    Assignee: NOF Corporation
    Inventors: Hideki Kawamoto, Fumitaka Yoshikawa, Akira Morita
  • Publication number: 20140152513
    Abstract: An antenna unit includes first and second antenna units arranged on opposite sides of a vehicle. Each antenna unit includes an antenna body and a second terminal portion. The antenna body includes an antenna portion and a first terminal portion. The antenna portion includes at least two antenna coils each having an axis, and the two axes of the at least two antenna coils intersect each other. The first terminal portion includes first terminals each arranged on two ends of the at least two antenna coils. The second terminal portion is arranged on the vehicle and includes second terminals respectively connected to the first terminals. The second terminal portion of each antenna unit includes a wire-connecting structure, which series-connects the at least two antenna coils. The wire-connecting structures differ between the antenna units.
    Type: Application
    Filed: November 18, 2013
    Publication date: June 5, 2014
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Motoki NAKAGAWA, Fumitaka YOSHIKAWA
  • Publication number: 20140145904
    Abstract: An antenna device is provided with first and second bobbins. The first bobbin includes an end wall and a hollow interior. A first antenna coil is wound around the first bobbin. A second antenna coil is wound around the second bobbin. The first bobbin includes two terminals arranged on the end wall and electrically connected to two ends of the first antenna coil, respectively. The end wall includes two through holes that extend to the hollow interior of the first bobbin. The second bobbin includes two terminals electrically connected to two ends of the second antenna coil, respectively. The second bobbin is accommodated in the hollow interior of the first bobbin. The two terminals of the second bobbin are inserted through the two through holes, respectively.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 29, 2014
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Fumitaka YOSHIKAWA, Motoki NAKAGAWA
  • Publication number: 20140145903
    Abstract: An antenna device includes a core, a first bobbin, and a second bobbin. A first antenna coil is wound around the first bobbin. A second antenna coil is wound around the second bobbin. The second bobbin includes an accommodation portion, which includes an opening in an outer surface of the second bobbin at a location other than where the second antenna coil contacts. The accommodation portion accommodates the core, and the second bobbin is accommodated in the hollow interior of the first bobbin.
    Type: Application
    Filed: October 29, 2013
    Publication date: May 29, 2014
    Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHO
    Inventors: Fumitaka YOSHIKAWA, Motoki NAKAGAWA
  • Publication number: 20140007496
    Abstract: A fuel oil flow improver comprising the ester compound (A) below and the copolymer (B) below, which is the fuel oil flow improver in which the mass ratio [(A)/(B)] of the ester compound (A) and the copolymer (B) is from 30/70 to 70/30. (A) The ester compound represented by Formula (I) below. R1 is e.g. a linear saturated C19 alkyl group, and X, Y, and Z each represent an integer of 1 or higher. (B) A copolymer of a weight-average molecular weight of 5,000 to 50,000 obtained by polymerizing (b1) to (b3) below at a molar fraction of (b1)/(b2)/(b3)=0.4 to 0.8/0.1 to 0.3/0.1 to 0.3. R2 is e.g. a linear saturated C14 alkyl group. R3 is e.g. a linear saturated C10 alkyl group. R4 is e.g. a linear saturated C12 alkyl group.
    Type: Application
    Filed: March 28, 2012
    Publication date: January 9, 2014
    Applicant: NOF CORPORATION
    Inventors: Hideki Kawamoto, Fumitaka Yoshikawa, Akira Morita
  • Publication number: 20120316306
    Abstract: The present invention provides a flow improver for oils and fats, by which a sufficient improvement in the flowability of oils and fats can be achieved, when oils and fats are used as fuels. This flow improver for oils and fats comprises a polymer including constitutional units (I), (II), and (III), and having a weight-average molecular weight in the range of 5,000 to 100,000. The molar fraction a of the constitutional unit (I) is in the range of 0.4 to 0.8, the molar fraction b of the constitutional unit (II) is in the range of 0.1 to 0.3, and the molar fraction c of the constitutional unit (III) is in the range of 0.1 to 0.3.
    Type: Application
    Filed: February 2, 2011
    Publication date: December 13, 2012
    Applicant: NOF CORPORATION
    Inventors: Fumitaka Yoshikawa, Hideki Kawamoto, Keiji Hirao
  • Patent number: 7999655
    Abstract: A communication system that controls the disabling and enabling of a communication function in a communication portion of a portable device in accordance with whether the communication function of the portable device is disabled or enabled. The communication system includes a selection device for selecting a disablement mode, which disables automatic communication of the portable device with respect to a communication controller, and a communication mode, which enables automatic communication of the portable device. A determination unit recognizes which one of the disablement mode and the communication mode the portable device is in to determine whether to enable or disable automatic communication with respect to the portable device in accordance with the recognition. A recognition information providing device provides the determination unit with recognition information used to recognize which one of the disablement mode and the communication mode the portable device is in.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: August 16, 2011
    Assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Fumitaka Yoshikawa
  • Publication number: 20040150512
    Abstract: A communication system that controls the disabling and enabling of a communication function in a communication portion of a portable device in accordance with whether the communication function of the portable device is disabled or enabled. The communication system includes a selection device for selecting a disablement mode, which disables automatic communication of the portable device with respect to a communication controller, and a communication mode, which enables automatic communication of the portable device. A determination unit recognizes which one of the disablement mode and the communication mode the portable device is in to determine whether to enable or disable automatic communication with respect to the portable device in accordance with the recognition. A recognition information providing device provides the determination unit with recognition information used to recognize which one of the disablement mode and the communication mode the portable device is in.
    Type: Application
    Filed: November 18, 2003
    Publication date: August 5, 2004
    Applicant: Kabushiki Kaisha Tokai Rika Denki Seisakusho
    Inventor: Fumitaka Yoshikawa