Patents by Inventor Hiroki Takenaka

Hiroki Takenaka 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: 11962183
    Abstract: A backup power system according to the present disclosure includes a battery, a charging circuit, power storage, a first load, a second load, and a controller that controls the charging circuit. The controller causes an input current at the charging circuit to increase at a first rate of change in response to a start signal. When the controller detects an increase in a charging voltage at the power storage up to a first voltage at which driving of the first load is possible, the controller controls the charging circuit to cause the input current at the charging circuit to increase at a second rate of change lower than the first rate of change. The charging circuit is controlled by the controller to cause the input current to increase at the second rate of change, and the charging voltage at the power storage increases up to a second voltage at which driving of both the first load and the second load is possible.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: April 16, 2024
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuo Takenaka, Takashi Higashide, Katsunori Atago, Youichi Kageyama, Hisao Hiragi, Yugo Setsu, Hiroki Nishinaka, Shinichi Tanida
  • Publication number: 20240059831
    Abstract: An object of the present disclosure is to provide a curable composition excellent in curability (especially high-speed curability) and capable of forming a cured product excellent in heat resistance (especially reflow heat resistance), and to provide a wafer-level lens formed by using the curable composition and a method for producing the wafer-level lens. A curable composition of the present disclosure includes the following components (A) and (B). component (A): a compound including an alicyclic epoxy group and including no ester bond, and component (B): a cationic polymerization initiator including a cation moiety and an anion moiety containing a gallium atom.
    Type: Application
    Filed: August 8, 2023
    Publication date: February 22, 2024
    Applicant: DAICEL CORPORATION
    Inventor: Hiroki TAKENAKA
  • Publication number: 20240034832
    Abstract: [Problem] To provide a curable composition capable of achieving reduction in viscosity while having a high refractive index when formed into a cured product. [Solution] Disclosed is a curable composition containing an alicyclic epoxy compound (A) and a cationically polymerizable compound (B) having a binaphthyl group. The curable composition preferably contains a monofunctional cationically polymerizable aromatic compound (C), preferably has a viscosity of 30 Pa·s or less at 25° C., and preferably has a refractive index of 1.58 or greater at a wavelength 589 nm when cured.
    Type: Application
    Filed: July 26, 2023
    Publication date: February 1, 2024
    Applicant: DAICEL CORPORATION
    Inventors: Hiroki TAKENAKA, Kouji TANAKA
  • Publication number: 20230288614
    Abstract: There is provided a technique that can suppress generation of flare and/or ghost by incident light reflecting off an inner wall of the spacer in a lens unit including a wafer-level lens and a spacer. A lens unit is formed by joining a lens portion including a lens and a spacer portion including a through hole through which light emitted from the lens passes, in which the spacer portion includes, in an end surface in which the lens portion is joined, an opening portion of the through hole and an inner wall portion, which is a wall surface of an outer edge of the opening portion, and the inner wall portion has a surface roughness greater than a surface roughness of an end surface of the spacer portion opposite to the end surface in which the lens portion is joined.
    Type: Application
    Filed: December 28, 2022
    Publication date: September 14, 2023
    Applicant: Daicel Corporation
    Inventors: Hiroki Takenaka, Hiroyuki Hanato, Maki Kishimoto
  • Publication number: 20230249424
    Abstract: A method of producing a lens molded article includes a state determination of determining, after molding the lens molded article, whether a state is a first state where the lens molded article molded remains in an upper mold or a second state where the lens molded article molded remains in a lower mold; an adsorption of adsorbing an exposed surface of the lens molded article remaining in the upper mold or the lower mold, by an adsorption device disposed at an arm of a molded article moving device; an adsorption surface change of changing an adsorption surface from a surface adsorbed by the adsorption device to an opposite surface to the exposed surface when the determination result in the state determination is either one of the first state or the second state; and a placement of placing on a tray the lens molded article adsorbed by the adsorption device.
    Type: Application
    Filed: February 8, 2023
    Publication date: August 10, 2023
    Applicant: DAICEL CORPORATION
    Inventors: Hiroki TAKENAKA, Hiromi HONMA
  • Publication number: 20230176249
    Abstract: As a first aspect, provided is a hybrid lens for which peeling and shifting of a glass and a resin lens do not easily occur, and for which floating of an adhesive layer and peeling between the glass and resin lens do not easily occur even when the hybrid lens is exposed to a high temperature environment. As a second aspect, provided is an easily produced hybrid lens in which a glass and a resin lens are laminated, and in which the resin lens and a light-shielding portion are laminated with good precision. The hybrid lenses 11 and 12 each include a glass substrate 3, a resin lens 2, and an adhesive layer 4 provided between the glass substrate 3 and the resin lens 2. In the hybrid lens 11, the glass transition temperature of the resin lens 2 is higher than the glass transition temperature of the adhesive layer 4, and the difference between the glass transition temperature of the resin lens 2 and the glass transition temperature of the adhesive layer 4 is from 97 to 150° C.
    Type: Application
    Filed: November 15, 2022
    Publication date: June 8, 2023
    Applicant: Daicel Corporation
    Inventors: Hiroki Takenaka, Hiromi Honma, Hiroyuki Hanato, Shinji Kikuchi
  • Patent number: 11099347
    Abstract: The imaging-device lens module includes a lens and a spacer. The lens includes a functioning portion, a non-functioning portion, and a support. The non-functioning portion is disposed around the periphery of, and is integral with, the functioning portion. The support is integral with the non-the functioning portion and supports the lens. The spacer has a flat top face, and the support has a flat bottom face. The spacer is bonded at the top face to the bottom face to support the lens. The top face has a width B, and the bottom face has a width A, where B is greater than A. The support has a height L1, the spacer has a height L2, and the functioning portion has a diameter D, where the total of L1 and L2 is greater than D, and where the diameter D is equal to or greater than the height L1.
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: August 24, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Hiroki Takenaka, Hiromi Honma
  • Patent number: 11029497
    Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: June 8, 2021
    Assignee: DAICEL CORPORATION
    Inventors: Takashi Kubo, Hiroki Takenaka
  • Publication number: 20190384030
    Abstract: Provided is an imaging-device lens module that can employ a lens having high form accuracy even with a long focal length, enables easy adjustment of the focal length with a small number of parts, and enables easy adjustment of the focal position before joining of the lens and a spacer. The imaging-device lens module includes a lens 1, a spacer 2, and a substrate 3 including a photodetector 3a. The lens 1 includes a functioning portion 1a, a non-functioning portion 1b, and a support 1c. The non-functioning portion 1b is disposed around the periphery of, and is integral with, the functioning portion 1a. The support 1c is integral with the non-the functioning portion 1a and supports the lens 1. The spacer 2 has a flat top face 2a, and the support 1c has a flat bottom face 1d. The spacer 2 is bonded at the top face 2a to the bottom face 1d to support the lens 1. The top face 2a has a width B, and the bottom face 1d has a width A, where B is greater than A.
    Type: Application
    Filed: October 11, 2017
    Publication date: December 19, 2019
    Applicant: DAICEL CORPORATION
    Inventors: Hiroki TAKENAKA, Hiromi HONMA
  • Publication number: 20180284396
    Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.
    Type: Application
    Filed: June 6, 2018
    Publication date: October 4, 2018
    Applicant: DAICEL CORPORATION
    Inventors: Takashi KUBO, Hiroki TAKENAKA
  • Patent number: 10018810
    Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: July 10, 2018
    Assignee: DAICEL CORPORATION
    Inventors: Takashi Kubo, Hiroki Takenaka
  • Patent number: 9856347
    Abstract: Provided is a curable composition that is rapidly cured to form a cured product. The cured product resists yellowing, successfully maintains excellent transparency over a long time even in a high-temperature environment, and is advantageously usable as or in a wafer-level lens. The curable composition according to the present invention includes a cycloaliphatic epoxide (A), a siloxane compound (B), and a curing agent (C). The cycloaliphatic epoxide (A) is represented by Formula (1). The siloxane compound (B) contains two or more glycidyl groups per molecule. In the formula, X is selected from a single bond and a linkage group.
    Type: Grant
    Filed: February 16, 2015
    Date of Patent: January 2, 2018
    Assignee: DAICEL CORPORATION
    Inventors: Hiroki Takenaka, Kyohei Ishida
  • Publication number: 20170009003
    Abstract: Provided is a curable composition that is rapidly cured to form a cured product. The cured product resists yellowing, successfully maintains excellent transparency over a long time even in a high-temperature environment, and is advantageously usable as or in a wafer-level lens. The curable composition according to the present invention includes a cycloaliphatic epoxide (A), a siloxane compound (B), and a curing agent (C). The cycloaliphatic epoxide (A) is represented by Formula (1). The siloxane compound (B) contains two or more glycidyl groups per molecule. In the formula, X is selected from a single bond and a linkage group.
    Type: Application
    Filed: February 16, 2015
    Publication date: January 12, 2017
    Applicant: DAICEL CORPORATION
    Inventors: Hiroki TAKENAKA, Kyohei ISHIDA
  • Patent number: 9480672
    Abstract: An object of the present invention is to provide an internal composition capable of exerting various physiological functions such as a brain-function improving function. That is, the present invention provides an internal composition including docosahexaenoic acid and capsanthin, or docosahexaenoic acid, capsanthin, lutein, and zeaxanthin as active ingredients.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: November 1, 2016
    Assignee: LION CORPORATION
    Inventors: Hiroki Takenaka, Yasuharu Ishihara, Naoki Ichiyanagi, Misato Koakutsu, Kei Kurita
  • Patent number: 9457001
    Abstract: An object of the present invention is to provide an internal composition capable of exerting various physiological functions such as a brain-function improving function. That is, the present invention provides an internal composition including docosahexaenoic acid and capsanthin, or docosahexaenoic acid, capsanthin, lutein, and zeaxanthin as active ingredients.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: October 4, 2016
    Assignee: LION CORPORATION
    Inventors: Hiroki Takenaka, Yasuharu Ishihara, Naoki Ichiyanagi, Misato Koakutsu, Kei Kurita
  • Publication number: 20160067203
    Abstract: An object of the present invention is to provide an internal composition capable of exerting various physiological functions such as a brain-function improving function. That is, the present invention provides an internal composition including docosahexaenoic acid and capsanthin, or docosahexaenoic acid, capsanthin, lutein, and zeaxanthin as active ingredients.
    Type: Application
    Filed: July 10, 2014
    Publication date: March 10, 2016
    Applicant: LION CORPORATION
    Inventors: Hiroki TAKENAKA, Yasuharu ISHIHARA, Naoki ICHIYANAGI, Misato KOAKUTSU, Kei KURITA
  • Publication number: 20150212300
    Abstract: An object of the present invention is to provide a curable composition that can be cured satisfactorily and can form a cured product having a high glass transition temperature as maintained and having high mechanical strength. A curable composition includes a siloxane (A), a cycloaliphatic epoxide (B), and a curing agent (C). The siloxane (A) contains at least two epoxy groups per molecule. The cycloaliphatic epoxide (B) in the curable composition is preferably a compound represented by Formula (I): wherein X is selected from a single bond and a linkage group.
    Type: Application
    Filed: August 22, 2013
    Publication date: July 30, 2015
    Applicant: DAICEL CORPORATION
    Inventors: Takashi Kubo, Hiroki Takenaka
  • Patent number: 8865801
    Abstract: The present invention relates to epoxy resin coating composition which comprises, at least, epoxy resin, a thiol-type curing agent and a curing assistant, being composed of two liquids of liquid (A) containing epoxy resin and a thiol-type curing agent and liquid (B) containing a curing assistant, which liquids are mixed just before using, wherein the thiol-type curing agent contains a branched compound containing a thiol group (P), which compound is an ester of polyhydric alcohol with thiol group-containing carboxylic acid represented by formula (1) HOCO(CH2)nCR1R2SH??(1) (in the formula, R1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms, R2 represents a linear or branched alkyl group having 1 to 10 carbon atoms, and n represents an integer of 1 to 4), which exhibits a suitable pot life, excellent curability particularly at low and ordinary temperature and low toxicity.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: October 21, 2014
    Assignee: Showa Denko K.K.
    Inventors: Isao Yamagami, Hiroki Takenaka, Katsumi Murofushi
  • Publication number: 20120077903
    Abstract: The present invention relates to epoxy resin coating composition which comprises, at least, epoxy resin, a thiol-type curing agent and a curing assistant, being composed of two liquids of liquid (A) containing epoxy resin and a thiol-type curing agent and liquid (B) containing a curing assistant, which liquids are mixed just before using, wherein the thiol-type curing agent contains a branched compound containing a thiol group (P), which compound is an ester of polyhydric alcohol with thiol group-containing carboxylic acid represented by formula (1) HOCO(CH2)nCR1R2SH??(1) (in the formula, R1 represents a hydrogen atom or a linear or branched alkyl group having 1 to 10 carbon atoms, R2 represents a linear or branched alkyl group having 1 to 10 carbon atoms, and n represents an integer of 1 to 4), which exhibits a suitable pot life, excellent curability particularly at low and ordinary temperature and low toxicity.
    Type: Application
    Filed: May 27, 2010
    Publication date: March 29, 2012
    Applicant: SHOWA DENKO K.K.
    Inventors: Isao Yamagami, Hiroki Takenaka, Katsumi Murofushi