Patents by Inventor Takashi Iizuka
Takashi Iizuka 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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Refractive property measurement device, measurement tool, and refractive property measurement method
Patent number: 12279821Abstract: A refractive property measurement apparatus to measure refractive properties of an eye includes: a disk provided with a first pinhole and a second pinhole that transmit light rays while narrowing them; a light emitting unit that emits a first light ray and a second light ray from different positions on a surface of the disk, so that light rays passed through the first pinhole and the second pinhole enter the eye; and a processing unit determines refractive properties of the eye from information of positions on a retina of the eye where the first light ray having passed through the first pinhole and the second light ray having passed through the second pinhole reach. The first pinhole includes a first optical element that transmits the first light ray, and the second pinhole includes a second optical element that has transmission characteristics of transmitting the second light ray.Type: GrantFiled: December 11, 2019Date of Patent: April 22, 2025Assignee: HOYA LENS THAILAND LTD.Inventor: Takashi Iizuka -
Publication number: 20250115746Abstract: An oil-extended conjugated diene polymer including a conjugated diene polymer (A) extended using 5 to 60 parts by weight of an oil (B) relative to 100 parts by weight of the conjugated diene polymer (A), wherein in the oil (B), (1) a UV/RI detection area ratio [XUV/XRI] specified in the specification is 10 or less, and (2) an extrapolated initial melting temperature [Tim-max] of a melting peak in the highest temperature region specified in the specification is 23° C. or less.Type: ApplicationFiled: January 20, 2023Publication date: April 10, 2025Applicants: ZS ELASTOMERS CO., LTD., ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITEDInventor: Takashi IIZUKA
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Patent number: 12270099Abstract: A film-forming device includes: a chamber in which a mold is to be housed for shearing work; a support disposed in the chamber, the support being configured to support the mold with a hole of the mold being open in a vertical direction; and an evaporation source disposed in the chamber, the evaporation source having an evaporation surface from which metal ions are to be generated. The evaporation source is installed such that the evaporation surface is directed in a prescribed direction which is tilted with respect to a horizontal direction, and in the prescribed direction in which the evaporation surface is directed, part of an inner peripheral surface of the hole of the mold is located.Type: GrantFiled: November 6, 2020Date of Patent: April 8, 2025Inventor: Takashi Iizuka
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Patent number: 12245814Abstract: A refraction measuring apparatus measures refractive properties of an eye by two light bundles respectively passing through two apertures, the apparatus including: a first rotational member, rotatably supported about a first rotational center, provided with the two apertures on either side of the first rotational center; a second rotational member, rotatably supported about a second rotational center, provided with a light-transmission portion(s) and a light-shielding portion at different rotational-direction positions.Type: GrantFiled: September 27, 2021Date of Patent: March 11, 2025Assignee: HOYA LENS THAILAND LTD.Inventor: Takashi Iizuka
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Patent number: 12188872Abstract: An adhesion interface observation method is adapted to observe a region in vicinity of an adhesion interface following adhesion and curing of an adhesive that is coated on adhered members and adheres the adhered members to each other. The adhesion interface observation method includes: exposing the cured adhesive by removing one of the adhered members; forming an observation region by cutting a predetermined part of the adhesive by a predetermined thickness; obliquely cutting the observation region in an oblique direction that is inclined with respect to a thickness direction of the observation region; and observing, by a surface-enhanced Raman scattering spectroscopy, Raman scattering light generated by applying excitation light to an observation possible region that is positioned on a side, of a part of the observation region having been subjected to the oblique cutting, on which a thickness of the part of the observation region is small.Type: GrantFiled: December 12, 2022Date of Patent: January 7, 2025Assignee: SUBARU CORPORATIONInventors: Yugo Tomita, Tomoya Yoshida, Takashi Iizuka, Kosuke Kawai
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Patent number: 11873364Abstract: A method for producing conjugated diene rubber is provided, including: a first step of obtaining a conjugated diene polymer chain having an active end by polymerizing a monomer comprising a conjugated diene compound and a vinyl compound having a functional group interactive with silica using a polymerization initiator in an inert solvent; a second step of reacting a siloxane compound with the active end of the conjugated diene polymer chain having the active end; and a third step of reacting a hydrocarbyloxysilane compound with the conjugated diene polymer chain with which the siloxane compound has been reacted that is obtained in the second step.Type: GrantFiled: March 26, 2019Date of Patent: January 16, 2024Assignees: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.Inventors: Takuro Sakurai, Takashi Iizuka, Mana Fujii, Hisakatsu Hama
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Publication number: 20230410064Abstract: An electronic receipt system has a first server to store first identification codes for store program members and a second server to store second identification codes set for people belong to an electronic receipt service operated by an entity other than the store. The first server stores first identification codes in association with second identification codes. A first control unit of the first server receives and then transmits receipt data including a second identification code to the second server. A second control unit of the first server receives receipt data including a first identification code and acquires a corresponding second identification code from the storage unit, adds the second identification code to the receipt data and transmits the receipt data to the second server without the including the first identification code.Type: ApplicationFiled: March 14, 2023Publication date: December 21, 2023Inventors: Yuji HAYASHI, Takashi IIZUKA
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Publication number: 20230410118Abstract: A transaction processing system provides for improved item return and exchange processing for retail stores and the like. The system includes a point-of-sale terminal configured to generate transaction data for a customer transaction and perform processing operations related to returns and exchanges and a server. The server includes a storage unit storing transaction data for previous customer transactions. The transaction data for the previous customer transactions includes a list of items in the transaction. A processor in the server selects the transaction data of one of the previous customer transactions based on an input of a transaction identifier from the point-of-sale terminal, cancels the selected transaction data, generates registration data for a new customer transaction with the list from the now-cancelled transaction data, updates the new registration data according to instructions from the point-of-sale terminal, and stores the updated registration data as new transaction data.Type: ApplicationFiled: March 14, 2023Publication date: December 21, 2023Inventors: Yuji HAYASHI, Takashi IIZUKA
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Publication number: 20230304140Abstract: A film-forming device includes: a chamber in which a mold is to be housed for shearing work; a support disposed in the chamber, the support being configured to support the mold with a hole of the mold being open in a vertical direction; and an evaporation source disposed in the chamber, the evaporation source having an evaporation surface from which metal ions are to be generated. The evaporation source is installed such that the evaporation surface is directed in a prescribed direction which is tilted with respect to a horizontal direction, and in the prescribed direction in which the evaporation surface is directed, part of an inner peripheral surface of the hole of the mold is located.Type: ApplicationFiled: November 6, 2020Publication date: September 28, 2023Inventor: Takashi IIZUKA
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Publication number: 20230194431Abstract: An adhesion interface observation method is adapted to observe a region in vicinity of an adhesion interface following adhesion and curing of an adhesive that is coated on adhered members and adheres the adhered members to each other. The adhesion interface observation method includes: exposing the cured adhesive by removing one of the adhered members; forming an observation region by cutting a predetermined part of the adhesive by a predetermined thickness; obliquely cutting the observation region in an oblique direction that is inclined with respect to a thickness direction of the observation region; and observing, by a surface-enhanced Raman scattering spectroscopy, Raman scattering light generated by applying excitation light to an observation possible region that is positioned on a side, of a part of the observation region having been subjected to the oblique cutting, on which a thickness of the part of the observation region is small.Type: ApplicationFiled: December 12, 2022Publication date: June 22, 2023Applicant: SUBARU CORPORATIONInventors: Yugo TOMITA, Tomoya YOSHIDA, Takashi IIZUKA, Kosuke KAWAI
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Publication number: 20230086388Abstract: According to an embodiment, a registration apparatus transmits payment data including registered information of a commodity to any one of a plurality of payment apparatuses. The registration apparatus determines which payment apparatus of the plurality of payment apparatuses is a payment apparatus that takes over execution of payment processing based on the transmitted payment data. The registration apparatus instructs the payment apparatus lastly determined to stop the payment processing based on the transmitted payment data and to call back the payment data via the communication device in response to a reception of a callback operation by an input device.Type: ApplicationFiled: April 28, 2022Publication date: March 23, 2023Inventor: Takashi IIZUKA
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Patent number: 11566094Abstract: A modified conjugated diene rubber having a modifying structure derived from a siloxane compound at at least one terminal of a polymer chain containing conjugated diene monomer unit and a monomer unit of a vinyl compound having a functional group interactive with silica.Type: GrantFiled: September 28, 2018Date of Patent: January 31, 2023Assignees: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.Inventors: Takuro Sakurai, Takashi Iizuka, Mana Fujii, Hisakatsu Hama
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Patent number: 11530287Abstract: A conjugated diene-based rubber including a polymer block (A) containing isoprene monomer unit as the main component and a polymer block (B) containing 1,3-butadiene monomer unit as the main component, wherein at least one of the polymer block (A) and the polymer block (B) contains a unit of a vinyl compound having a functional group interactive with silica, the polymer block (A) has a weight average molecular weight (Mw) in the range of 1,000 to 30,000, and the entire conjugated diene-based rubber has a weight average molecular weight (Mw) in the range of 50,000 to 5,000,000.Type: GrantFiled: September 28, 2018Date of Patent: December 20, 2022Assignees: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.Inventors: Takuro Sakurai, Takashi Iizuka, Mana Fujii, Hisakatsu Hama
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Patent number: 11407056Abstract: A pierce metal includes a head and a shaft. The shaft is configured to penetrate through an aluminum die-cast member with a protruded tip surface of the shaft being exposed from the aluminum die-cast member, and an outer peripheral surface of the shaft is configured to come into contact with a through-hole of the aluminum die-cast member, upon joining the aluminum die-cast member and the iron-based member together. The head and the iron-based member in contact with the protruded tip surface are configured to be held under pressure and applied with electric power by weld electrodes to perform spot welding of the protruded tip surface and the iron-based member, upon joining the aluminum die-cast member and the iron-based member together. The outer peripheral surface includes a non-contact part configured to come into non-contact with the through-hole in a state in which the shaft is penetrated through the aluminum die-cast member.Type: GrantFiled: April 1, 2020Date of Patent: August 9, 2022Assignee: SUBARU CORPORATIONInventors: Tatsunori Matsunaga, Takashi Iizuka, Seigo Shimizu, Kunpei Ito, Yugo Tomita
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Publication number: 20220095915Abstract: A refraction measuring apparatus measures refractive properties of an eye by two light bundles respectively passing through two apertures, the apparatus including: a first rotational member, rotatably supported about a first rotational center, provided with the two apertures on either side of the first rotational center; a second rotational member, rotatably supported about a second rotational center, provided with a light-transmission portion(s) and a light-shielding portion at different rotational-direction positions.Type: ApplicationFiled: September 27, 2021Publication date: March 31, 2022Applicant: HOYA LENS THAILAND LTD.Inventor: Takashi IIZUKA
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REFRACTIVE PROPERTY MEASUREMENT DEVICE, MEASUREMENT TOOL, AND REFRACTIVE PROPERTY MEASUREMENT METHOD
Publication number: 20220054005Abstract: A refractive property measurement apparatus to measure refractive properties of an eye includes: a disk provided with a first pinhole and a second pinhole that transmit light rays while narrowing them; a light emitting unit that emits a first light ray and a second light ray from different positions on a surface of the disk, so that light rays passed through the first pinhole and the second pinhole enter the eye; and a processing unit determines refractive properties of the eye from information of positions on a retina of the eye where the first light ray having passed through the first pinhole and the second light ray having passed through the second pinhole reach. The first pinhole includes a first optical element that transmits the first light ray, and the second pinhole includes a second optical element that has transmission characteristics of transmitting the second light ray.Type: ApplicationFiled: December 11, 2019Publication date: February 24, 2022Applicant: HOYA LENS THAILAND LTD.Inventor: Takashi IIZUKA -
Publication number: 20210097412Abstract: A learning model generation method, a computer program, an eyeglass lens selection support method and an eyeglass lens selection support system that can be expected to support selection of an eyeglass lens by inferring specifications of an eyeglass lens suitable for a user.Type: ApplicationFiled: September 23, 2020Publication date: April 1, 2021Applicant: HOYA LENS THAILAND LTD.Inventor: Takashi IIZUKA
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Publication number: 20210017321Abstract: A method for producing conjugated diene rubber is provided, including: a first step of obtaining a conjugated diene polymer chain having an active end by polymerizing a monomer comprising a conjugated diene compound and a vinyl compound having a functional group interactive with silica using a polymerization initiator in an inert solvent; a second step of reacting a siloxane compound with the active end of the conjugated diene polymer chain having the active end; and a third step of reacting a hydrocarbyloxysilane compound with the conjugated diene polymer chain with which the siloxane compound has been reacted that is obtained in the second step.Type: ApplicationFiled: March 26, 2019Publication date: January 21, 2021Applicants: ZEON CORPORATION, SUMITOMO CHEMICAL COMPANY, LIMITED, ZS ELASTOMERS CO., LTD.Inventors: Takuro SAKURAI, Takashi IIZUKA, Mana FUJII, Hisakatsu HAMA
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Publication number: 20200364766Abstract: According to one embodiment, an article management apparatus manages an article by list data representing a list of the articles, and includes an acquisition unit and an update unit. The acquisition unit acquires packaged article data representing both an article code that is recorded on a packaged article in which a plurality of the same single articles are packaged together and identifies the single article and the number of the packaged single articles. The update unit updates the list data so as to represent a new list further including the number of the articles, which are identified by the article code represented by the packaged article data acquired by the acquisition unit, represented by the packaged article data, in addition to the articles indicated in the list represented by the list data, in response to a fact that the packaged article data are acquired by the acquisition unit.Type: ApplicationFiled: November 20, 2019Publication date: November 19, 2020Inventors: Hidenori Fujimaki, Takashi Iizuka, Hisashi Matsukawa
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Publication number: 20200361022Abstract: A pierce metal includes a head and a shaft. The shaft is configured to penetrate through an aluminum die-cast member with a protruded tip surface of the shaft being exposed from the aluminum die-cast member, and an outer peripheral surface of the shaft is configured to come into contact with a through-hole of the aluminum die-cast member, upon joining the aluminum die-cast member and the iron-based member together. The head and the iron-based member in contact with the protruded tip surface are configured to be held under pressure and applied with electric power by weld electrodes to perform spot welding of the protruded tip surface and the iron-based member, upon joining the aluminum die-cast member and the iron-based member together. The outer peripheral surface includes a non-contact part configured to come into non-contact with the through-hole in a state in which the shaft is penetrated through the aluminum die-cast member.Type: ApplicationFiled: April 1, 2020Publication date: November 19, 2020Inventors: Tatsunori MATSUNAGA, Takashi Iizuka, Seigo Shimizu, Kunpei Ito, Yugo Tomita