Patents by Inventor Tomo Sato
Tomo Sato 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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Publication number: 20250110266Abstract: A light modulation element reproduces a light image in a specific color other than iridescence where white light is incident, without a layer that selectively transmits or reflects a specific wavelength band, and clearly reproduces a desired light image by reducing an influence of 0th-order diffracted light, and an information recording medium including the same. The light modulation element includes a factor element that reproduces a light image by modulating a phase of incident reproduction light, and has an uneven surface. A maximum diffraction efficiency Dmax in a wavelength band of between 380 nm and 780 nm in wavelength distribution of first-order diffracted light and of negative first-order diffracted light with respect to diffraction efficiency for the factor element has a local maximum value with a full width at half maximum FWHM of 200 nm or less in wavelength distribution with respect to diffraction efficiency having the maximum diffraction efficiency.Type: ApplicationFiled: December 12, 2024Publication date: April 3, 2025Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi YAMAUCHI, Mitsuru Kitamura, Tomoe Sato
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Patent number: 12189163Abstract: A light modulation element reproduces a light image in a specific color other than iridescence where white light is incident, without a layer that selectively transmits or reflects a specific wavelength band, and clearly reproduces a desired light image by reducing an influence of 0th-order diffracted light, and an information recording medium including the same. The light modulation element includes a factor element that reproduces a light image by modulating a phase of incident reproduction light, and has an uneven surface. A maximum diffraction efficiency Dmax in a wavelength band of between 380 nm and 780 nm in wavelength distribution of first-order diffracted light and of negative first-order diffracted light with respect to diffraction efficiency for the factor element has a local maximum value with a full width at half maximum FWHM of 200 nm or less in wavelength distribution with respect to diffraction efficiency having the maximum diffraction efficiency.Type: GrantFiled: September 7, 2018Date of Patent: January 7, 2025Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi Yamauchi, Mitsuru Kitamura, Tomoe Sato
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Publication number: 20240418924Abstract: A light modulation element reproduces a light image in a specific color other than iridescence where white light is incident, without a layer that selectively transmits or reflects a specific wavelength band, and clearly reproduces a desired light image by reducing an influence of 0th-order diffracted light, and an information recording medium including the same. The light modulation element includes a factor element that reproduces a light image by modulating a phase of incident reproduction light, and has an uneven surface. A maximum diffraction efficiency Dmax in a wavelength band of between 380 nm and 780 nm in wavelength distribution of first-order diffracted light and of negative first-order diffracted light with respect to diffraction efficiency for the factor element has a local maximum value with a full width at half maximum FWHM of 200 nm or less in wavelength distribution with respect to diffraction efficiency having the maximum diffraction efficiency.Type: ApplicationFiled: August 26, 2024Publication date: December 19, 2024Applicant: Dai Nippon Printing Co., Ltd.Inventors: Tsuyoshi YAMAUCHI, Mitsuru KITAMURA, Tomoe SATO
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Patent number: 12087340Abstract: A magnetic recording medium is a tape-shaped magnetic recording medium that has a recording layer including an ?-iron oxide particle. An area ratio Rlow (=(Slow/Stotal)×100) of a total area Stotal of an SFD curve of the recording layer in a perpendicular direction and an area Slow of the SFD curve in which a coercivity Hc is in a range from ?500 [Oe]?Hc?500 [Oe] is equal to or less than 5.5%.Type: GrantFiled: September 4, 2020Date of Patent: September 10, 2024Assignee: Sony Group CorporationInventors: Natsuki Ichise, Minoru Yamaga, Katsunori Maeshima, Masaru Terakawa, Takeshi Takahashi, Tomoe Sato, Takashi Kataguchi
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Publication number: 20230075546Abstract: Provided is a magnetic recording medium that is able to achieve both an improvement in electromagnetic conversion characteristics and ensuring of high long-term reliability. The magnetic recording medium includes a magnetic layer and a base. The magnetic layer includes magnetic powders including ?-iron oxide. A ratio (Hrp/Hc) of residual coercivity (Hrp) measured in a perpendicular direction of the magnetic recording medium with use of a pulse magnetic field to perpendicular coercivity (Hc) of the magnetic recording medium is 2.0 or less. Saturation magnetization (Mst) per unit area of the magnetic recording medium is 4.5 mA or greater.Type: ApplicationFiled: January 20, 2021Publication date: March 9, 2023Inventors: Takeshi TAKAHASHI, Katsunori MAESHIMA, Minoru YAMAGA, Masaru TERAKAWA, Natsuki ICHISE, Tomoe SATO, Takashi KATAGUCHI, Atsuya TOWATA, Kimihiro OZAKI, Akihiro MATSUMOTO
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Publication number: 20220392488Abstract: A magnetic recording medium is a tape-shaped magnetic recording medium that has a recording layer including an ?-iron oxide particle. An area ratio Rlow (=(Slow/Stotal)×100) of a total area Stotal of an SFD curve of the recording layer in a perpendicular direction and an area Slow of the SFD curve in which a coercivity Hc is in a range from ?500 [Oe]?Hc?500 [Oe] is equal to or less than 5.5%.Type: ApplicationFiled: September 4, 2020Publication date: December 8, 2022Inventors: Natsuki ICHISE, Minoru YAMAGA, Katsunori MAESHIMA, Masaru TERAKAWA, Takeshi TAKAHASHI, Tomoe SATO, Takashi KATAGUCHI
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Patent number: 11505111Abstract: An illumination apparatus that illuminates an illumination zone having a first direction and a second direction crossing the first direction is provided with a light source to emit a coherent light beam, and a diffraction optical device to diffract the coherent light beam incident from the light source. The diffraction optical device diffracts the incident coherent light beam so that a width of the illumination zone in the second direction gradually becomes wider along the first direction of the illumination zone from a nearer side to the diffraction optical device.Type: GrantFiled: October 18, 2021Date of Patent: November 22, 2022Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shumpei Nishio, Makio Kurashige, Kaori Nakatsugawa, Tomoe Sato
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Patent number: 11447065Abstract: An illumination device has a coherent light source that emits coherent light beam, and an optical device that diffuses the coherent light beam, wherein the optical device comprises a first diffusion region that diffuses the coherent light beam to illuminate a first area, and a second diffusion region that diffuses the coherent light beam to display predetermined information in a second area.Type: GrantFiled: January 28, 2020Date of Patent: September 20, 2022Assignee: Dai Nippon Printing Co., Ltd.Inventors: Makio Kurashige, Tomoe Sato, Kazutoshi Ishida
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Publication number: 20220185939Abstract: The present invention aims to provide a polyol composition capable of producing a flexible polyurethane foam having excellent low resilience at room temperature and good breathability. The present invention provides a polyol composition (C) for producing flexible polyurethane foam, containing a polyester polyol (A) and a polyether polyol (B), wherein the followings (1) to (4) are satisfied: (1) the polyol composition (C) has an ester group concentration of 0.4 to 4.Type: ApplicationFiled: February 20, 2020Publication date: June 16, 2022Applicant: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Takuma TAHARA, Tomohisa HIRANO, Tomo SATO
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Patent number: 11355145Abstract: The magnetic recording medium includes a long substrate body, and a magnetic layer including a powder of cubic crystal ferrite magnetic particles. The sum of a squareness ratio in the longitudinal direction and a squareness ratio in the vertical direction is 1.2 or more, and the difference of the squareness ratio in the longitudinal direction and the squareness ratio in the vertical direction is 0.15 or more.Type: GrantFiled: December 14, 2016Date of Patent: June 7, 2022Assignee: Sony CorporationInventors: Eiji Nakashio, Masaru Terakawa, Yoichi Kanemaki, Tomoe Sato, Katsunori Maeshima, Nobuyuki Sasaki
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Publication number: 20220032836Abstract: An illumination apparatus that illuminates an illumination zone having a first direction and a second direction crossing the first direction is provided with a light source to emit a coherent light beam, and a diffraction optical device to diffract the coherent light beam incident from the light source. The diffraction optical device diffracts the incident coherent light beam so that a width of the illumination zone in the second direction gradually becomes wider along the first direction of the illumination zone from a nearer side to the diffraction optical device.Type: ApplicationFiled: October 18, 2021Publication date: February 3, 2022Applicant: Dai Nippon Printing Co., Ltd.Inventors: Shumpei NISHIO, Makio KURASHIGE, Kaori NAKATSUGAWA, Tomoe SATO
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Publication number: 20210405274Abstract: A light modulation element reproduces a light image in a specific color other than iridescence where white light is incident, without a layer that selectively transmits or reflects a specific wavelength band, and clearly reproduces a desired light image by reducing an influence of 0th-order diffracted light, and an information recording medium including the same. The light modulation element includes a factor element that reproduces a light image by modulating a phase of incident reproduction light, and has an uneven surface. A maximum diffraction efficiency Dmax in a wavelength band of between 380 nm and 780 nm in wavelength distribution of first-order diffracted light and of negative first-order diffracted light with respect to diffraction efficiency for the factor element has a local maximum value with a full width at half maximum FWHM of 200 nm or less in wavelength distribution with respect to diffraction efficiency having the maximum diffraction efficiency.Type: ApplicationFiled: September 7, 2018Publication date: December 30, 2021Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Tsuyoshi YAMAUCHI, Mitsuru KITAMURA, Tomoe SATO
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Patent number: 11186219Abstract: An illumination apparatus that illuminates an illumination zone having a first direction and a second direction crossing the first direction is provided with a light source to emit a coherent light beam, and a diffraction optical device to diffract the coherent light beam incident from the light source. The diffraction optical device diffracts the incident coherent light beam so that a width of the illumination zone in the second direction gradually becomes wider along the first direction of the illumination zone from a nearer side to the diffraction optical device.Type: GrantFiled: August 11, 2020Date of Patent: November 30, 2021Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shumpei Nishio, Makio Kurashige, Kaori Nakatsugawa, Tomoe Sato
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Patent number: 10872633Abstract: A magnetic recording medium according to a first technique includes an elongated substrate having a first surface and a second surface, a first reinforcing layer disposed on the first surface, a second reinforcing layer disposed on the second surface, an adhesion suppressing layer disposed on the second reinforcing layer, and a recording layer disposed on the first reinforcing layer or the adhesion suppressing layer.Type: GrantFiled: May 11, 2017Date of Patent: December 22, 2020Assignee: Sony CorporationInventors: Eiji Nakashio, Yuta Akimoto, Tomoe Sato, Yoichi Kanemaki, Nobuyuki Sasaki, Masaru Terakawa, Kazuya Hashimoto, Katsunori Maeshima, Minoru Yamaga, Hikaru Terui, Hiroyuki Kobayashi
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Publication number: 20200369199Abstract: An illumination apparatus that illuminates an illumination zone having a first direction and a second direction crossing the first direction is provided with a light source to emit a coherent light beam, and a diffraction optical device to diffract the coherent light beam incident from the light source. The diffraction optical device diffracts the incident coherent light beam so that a width of the illumination zone in the second direction gradually becomes wider along the first direction of the illumination zone from a nearer side to the diffraction optical device.Type: ApplicationFiled: August 11, 2020Publication date: November 26, 2020Applicant: Dai Nippon Printing Co., Ltd.Inventors: Shumpei NISHIO, Makio KURASHIGE, Kaori NAKATSUGAWA, Tomoe SATO
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Publication number: 20200321025Abstract: A magnetic recording medium includes an elongated substrate, and a reinforcing layer and a carbon thin film disposed on one surface of the substrate.Type: ApplicationFiled: May 11, 2017Publication date: October 8, 2020Applicant: Sony CorporationInventors: Eiji NAKASHIO, Yuta AKIMOTO, Tomoe SATO, Yoichi KANEMAKI, Nobuyuki SASAKI, Masaru TERAKAWA, Kazuya HASHIMOTO, Katsunori MAESHIMA, Minoru YAMAGA, Hikaru TERUI, Hiroyuki KOBAYASHI
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Patent number: 10773636Abstract: An illumination apparatus that illuminates an illumination zone having a first direction and a second direction crossing the first direction is provided with a light source to emit a coherent light beam, and a diffraction optical device to diffract the coherent light beam incident from the light source. The diffraction optical device diffracts the incident coherent light beam so that a width of the illumination zone in the second direction gradually becomes wider along the first direction of the illumination zone from a nearer side to the diffraction optical device.Type: GrantFiled: June 13, 2017Date of Patent: September 15, 2020Assignee: Dai Nippon Printing Co., Ltd.Inventors: Shumpei Nishio, Makio Kurashige, Kaori Nakatsugawa, Tomoe Sato
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Publication number: 20200156531Abstract: An illumination device has a coherent light source that emits coherent light beam, and an optical device that diffuses the coherent light beam, wherein the optical device comprises a first diffusion region that diffuses the coherent light beam to illuminate a first area, and a second diffusion region that diffuses the coherent light beam to display predetermined information in a second area.Type: ApplicationFiled: January 28, 2020Publication date: May 21, 2020Applicant: Dai Nippon Printing Co., Ltd.Inventors: Makio KURASHIGE, Tomoe Sato, Kazutoshi Ishida
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Patent number: 10656597Abstract: To provide an authentication device and method for a security medium including a reflective volume hologram having a light source disposed on the front surface side of the reflective volume hologram so that light emitted therefrom is incident on the reflective volume hologram, a first observation device disposed in a pre-designed diffraction direction of the reflective volume hologram, and a second observation device disposed in a direction other than the pre-designed diffraction direction of the reflective volume hologram. Light including a pre-designed diffraction wavelength is emitted from the light source to be incident on the reflective volume hologram, and when the light amount observed in the first observation device is larger in the diffraction wavelength than in other wavelengths, and the light amount observed in the second observation device is smaller in the diffraction wavelength than in other wavelengths, it is determined that the reflective volume hologram is genuine.Type: GrantFiled: September 7, 2015Date of Patent: May 19, 2020Assignee: Dai Nippon Printing Co., Ltd.Inventors: Mitsuru Kitamura, Tsuyoshi Yamauchi, Koji Eto, Nobuko Oikawa, Tomoe Sato
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Patent number: 10576874Abstract: An illumination device is provided, including a coherent light source that emits coherent light beam and an optical device that diffuses the coherent light beam. The optical device includes a first diffusion region that diffuses the coherent light beam to illuminate a first area, and a second diffusion region that diffuses the coherent light beam to display predetermined information in a second area. A timing control unit individually controls a light emission timing at which the coherent light source emits the coherent light so that the coherent light is irradiated to the first diffusion region and the second diffusion region, an incident timing at which the coherent light from the coherent light source is incident on the first diffusion region and the second diffusion region, or an illumination timing at which the coherent light diffused by the optical device illuminates the first area and the second area.Type: GrantFiled: November 6, 2015Date of Patent: March 3, 2020Assignee: Dai Nippon Printing Co., Ltd.Inventors: Makio Kurashige, Tomoe Sato, Kazutoshi Ishida