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).
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Patent number: 11508183Abstract: 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: GrantFiled: November 28, 2018Date of Patent: November 22, 2022Assignee: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Rijin Owaki, Yosuke Ohashi, Fumitaka Yoshikawa
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Patent number: 11400735Abstract: 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: GrantFiled: November 30, 2020Date of Patent: August 2, 2022Assignee: SEIKO INSTRUMENTS INC.Inventor: Fumitaka Yoshikawa
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Publication number: 20220135488Abstract: (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: ApplicationFiled: March 5, 2020Publication date: May 5, 2022Applicant: NOF CORPORATIONInventors: Fumitaka YOSHIKAWA, Kenta MATSUZAKI, Kazuki SUNADA
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Patent number: 11225623Abstract: 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: GrantFiled: December 19, 2016Date of Patent: January 18, 2022Assignee: NOF CORPORATIONInventors: Takeshi Kajiki, Fumitaka Yoshikawa, Seita Ueda
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Publication number: 20210207050Abstract: 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: ApplicationFiled: December 19, 2016Publication date: July 8, 2021Applicant: NOF CORPORATIONInventors: Takeshi KAJIKI, Fumitaka YOSHIKAWA, Seita UEDA
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Publication number: 20210173911Abstract: 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: ApplicationFiled: November 16, 2018Publication date: June 10, 2021Inventors: Yosuke OHASHI, Rijin OWAKI, Fumitaka YOSHIKAWA, Yuji FUKANO
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Publication number: 20210162781Abstract: 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: ApplicationFiled: November 30, 2020Publication date: June 3, 2021Inventor: Fumitaka YOSHIKAWA
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Publication number: 20210073503Abstract: 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: ApplicationFiled: December 13, 2018Publication date: March 11, 2021Inventors: Yosuke OHASHI, Rijin OWAKI, Fumitaka YOSHIKAWA
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Publication number: 20200384953Abstract: 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: ApplicationFiled: November 16, 2018Publication date: December 10, 2020Inventors: Yosuke OHASHI, Rijin OWAKI, Fumitaka YOSHIKAWA
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Publication number: 20200369243Abstract: 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: ApplicationFiled: November 16, 2018Publication date: November 26, 2020Inventors: Rijin OWAKI, Yosuke OHASHI, Fumitaka YOSHIKAWA, Yuji FUKANO
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Publication number: 20200353895Abstract: 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: ApplicationFiled: November 28, 2018Publication date: November 12, 2020Inventors: Rijin OWAKI, Yosuke OHASHI, Fumitaka YOSHIKAWA
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Patent number: 9012583Abstract: 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: GrantFiled: February 2, 2011Date of Patent: April 21, 2015Assignee: NOF CorporationInventors: Fumitaka Yoshikawa, Hideki Kawamoto, Keiji Hirao
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Patent number: 8920523Abstract: 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: GrantFiled: March 28, 2012Date of Patent: December 30, 2014Assignee: NOF CorporationInventors: Hideki Kawamoto, Fumitaka Yoshikawa, Akira Morita
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Publication number: 20140152513Abstract: 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: ApplicationFiled: November 18, 2013Publication date: June 5, 2014Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Motoki NAKAGAWA, Fumitaka YOSHIKAWA
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Publication number: 20140145904Abstract: 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: ApplicationFiled: November 8, 2013Publication date: May 29, 2014Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Fumitaka YOSHIKAWA, Motoki NAKAGAWA
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Publication number: 20140145903Abstract: 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: ApplicationFiled: October 29, 2013Publication date: May 29, 2014Applicant: KABUSHIKI KAISHA TOKAI RIKA DENKI SEISAKUSHOInventors: Fumitaka YOSHIKAWA, Motoki NAKAGAWA
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Publication number: 20140007496Abstract: 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: ApplicationFiled: March 28, 2012Publication date: January 9, 2014Applicant: NOF CORPORATIONInventors: Hideki Kawamoto, Fumitaka Yoshikawa, Akira Morita
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Publication number: 20120316306Abstract: 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: ApplicationFiled: February 2, 2011Publication date: December 13, 2012Applicant: NOF CORPORATIONInventors: Fumitaka Yoshikawa, Hideki Kawamoto, Keiji Hirao
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Patent number: 7999655Abstract: 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: GrantFiled: November 18, 2003Date of Patent: August 16, 2011Assignee: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventor: Fumitaka Yoshikawa
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Publication number: 20040150512Abstract: 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: ApplicationFiled: November 18, 2003Publication date: August 5, 2004Applicant: Kabushiki Kaisha Tokai Rika Denki SeisakushoInventor: Fumitaka Yoshikawa