Patents by Inventor Naohiro Fujisawa

Naohiro Fujisawa 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).

  • Publication number: 20230332998
    Abstract: A particle analyzer includes: an upper liquid space for storing first liquid; a lower liquid space for storing second liquid; a connection hole connecting the liquid spaces; a first inlet hole supplying the first liquid to the upper liquid space; a first outlet hole for exhausting air from the upper liquid space; a second inlet hole supplying the second liquid to the lower liquid space; a second outlet hole for exhausting air from the lower liquid space; first and second electrodes respectively applying a potential to the first liquid in the upper liquid space the second liquid in the lower liquid space; first and second lids respectively arranged at the opening of the first outlet hole and at the opening of the second outlet hole, and both lids being formed of a film allowing air to pass but not allowing liquids to pass.
    Type: Application
    Filed: August 23, 2021
    Publication date: October 19, 2023
    Inventors: Takumi YOSHITOMI, Yuki MUROTA, Naohiro FUJISAWA, Yuto TOKI
  • Publication number: 20230077861
    Abstract: A particle separating device includes at least three liquid chambers adapted to store a liquid therein; at least two liquid passages, each connecting adjacent two of the liquid chambers; an inlet adapted to introduce a liquid in which multiple particles of different sizes are dispersed into one of the liquid chambers; and at least two electrodes disposed inside at least two of the liquid chambers, respectively, the electrodes adapted to apply different electrical potentials to the liquid. The cross-sectional areas of the at least two liquid passages are different from each other.
    Type: Application
    Filed: January 7, 2021
    Publication date: March 16, 2023
    Inventors: Yuki MUROTA, Takumi YOSHITOMI, Naohiro FUJISAWA
  • Publication number: 20230077021
    Abstract: A particle analysis device includes a liquid space adapted to store a liquid; a chip disposed above the liquid space, the chip having a connection pore extending vertically and communicating with the liquid space; an upper hole disposed above the chip, the upper hole extending vertically and communicating with the connection pore; a first electrode adapted to apply an electric potential to a liquid in the upper hole; and a second electrode adapted to apply an electric potential to the liquid in the liquid space. The upper hole having a diameter that is equal to or greater than the maximum width of the connection pore, and the entirety of the connection pore falling within the range of the upper hole.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 9, 2023
    Inventors: Takumi YOSHITOMI, Goki OKADA, Naohiro FUJISAWA, Ryo FUTASHIMA
  • Publication number: 20230074523
    Abstract: A particle analysis device includes multiple stacked plates joined together; an upper liquid space adapted to store a first liquid; a lower liquid space adapted to store a second liquid; a connection pore connecting the upper liquid space to the lower liquid space; a first hole extending from the top surface to the upper liquid space, the first liquid flowing through the first hole; and a second hole extending from the top surface to the lower liquid space, the second liquid flowing through the second hole. A first electrode and a second electrode that are sheets are pinched between two of the plates. The first electrode applies an electric potential to the first liquid in the upper liquid space through the first hole, whereas the second electrode applies an electric potential to the second liquid in the lower liquid space through the second hole.
    Type: Application
    Filed: February 2, 2021
    Publication date: March 9, 2023
    Inventors: Takumi YOSHITOMI, Yuki MUROTA, Naohiro FUJISAWA, Kosuke SATO, Yuto TOKI
  • Publication number: 20220341840
    Abstract: A method is provided for manufacturing a particle analyzer in which the deterioration of the measurement function is suppressed during the measurement of the particles to be measured. The particle analyzer includes a first storage chamber in which a first liquid is stored, a second storage chamber in which a second liquid containing particles to be analyzed is stored, and a flow path connecting the first storage chamber in fluid communication with the second storage chamber. The method includes a surface modification step of irradiating a surface constituting the flow path with an ultraviolet ray to modify the surface of the flow path.
    Type: Application
    Filed: August 28, 2020
    Publication date: October 27, 2022
    Applicant: NOK CORPORATION
    Inventors: Takumi YOSHITOMI, Yuki MUROTA, Naohiro FUJISAWA
  • Publication number: 20220260524
    Abstract: A particle analysis device includes an upper liquid space in which a first liquid is stored, a lower liquid space in which a second liquid is stored, a connection pore connecting the upper liquid space to the lower liquid space, and first to fourth holes. Each of the first to fourth holes has an opening that opens at a top surface of the particle analysis device. The first and second holes extend to the upper liquid space. The third and fourth holes extend to the lower liquid space. A first electrode applies an electric potential to the first liquid in the upper liquid space through the first hole, and a second electrode applies an electric potential to the second liquid in the lower liquid space through the third hole. The opening of at least one of the first hole and the second hole has an area that is greater than the rest of the hole. The opening of at least one of the third hole and the fourth hole has an area that is greater than the rest of the hole.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 18, 2022
    Applicant: NOK CORPORATION
    Inventors: Yuki MUROTA, Takumi YOSHITOMI, Naohiro FUJISAWA
  • Publication number: 20220252500
    Abstract: A method is provided for storing a particle analyzer capable of suppressing deterioration of a measurement performance with the lapse of time in a particle analyzer for analyzing particles such as exosomes, pollen, viruses, and bacteria. The particle analyzer has a first storage chamber in which a first liquid is stored, a second storage chamber in which a second liquid containing particles to be analyzed is stored, and a flow path connecting the first storage chamber in fluid communication with the second storage chamber. According to the method, at least a portion of the first storage chamber, the second storage chamber, and the flow path are surface-treated, which includes filling an internal space defined by the first storage chamber, the second storage chamber, and the flow path with a liquid to thereby store the particle analyzer in a state that the surface-treated portion is not in contact with air.
    Type: Application
    Filed: June 24, 2020
    Publication date: August 11, 2022
    Inventors: Yuki MUROTA, Takumi YOSHITOMI, Naohiro FUJISAWA
  • Patent number: 10037485
    Abstract: Provided is an IC tag favorably applicable even to linen products. An IC tag 100 using a magnetic field type tag unit 110 in which an IC chip and a coil antenna to be electrically connected to the IC chip are embedded inside a hard resin material. The IC tag includes: a flexible film made of resin (a base film 121, a cover film 123, and a protective film 124); and an auxiliary antenna 122 formed on the film, wherein the magnetic field type tag unit 110 is fixed to the film by an adhesive 130 with elasticity at a position that enables communication by electromagnetic coupling between the coil antenna and the auxiliary antenna 122.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: July 31, 2018
    Assignee: NOK CORPORATION
    Inventors: Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima
  • Publication number: 20170032233
    Abstract: Provided is an IC tag favorably applicable even to linen products. An IC tag 100 using a magnetic field type tag unit 110 in which an IC chip and a coil antenna to be electrically connected to the IC chip are embedded inside a hard resin material. The IC tag includes: a flexible film made of resin (a base film 121, a cover film 123, and a protective film 124); and an auxiliary antenna 122 formed on the film, wherein the magnetic field type tag unit 110 is fixed to the film by an adhesive 130 with elasticity at a position that enables communication by electromagnetic coupling between the coil antenna and the auxiliary antenna 122.
    Type: Application
    Filed: December 17, 2014
    Publication date: February 2, 2017
    Applicant: NOK CORPORATION
    Inventors: Tomoko NAKANO, Naohiro FUJISAWA, Keiichi MIYAJIMA
  • Patent number: 9183484
    Abstract: The disclosure prevents, with improved reliability, an IC tag from being broken, while ensuring overall flexibility of the IC tag. The IC tag 100 is provided with a covering 140 made of an elastic material, which covers at least the side of the IC tag 100 on which an IC chip 130 is mounted and has a thickness that is larger in its portion 140a that covers a region about the IC chip 130 than in its portion 140b that covers a region outside the region about the IC chip 130. The covering 140 is configured in such a way that at least a part of a boundary of the portion 140a of the covering that covers the region about the IC chip 130 and the portion 140b of the covering that covers the region outside the region about the IC chip 130 has a curved shape.
    Type: Grant
    Filed: April 15, 2013
    Date of Patent: November 10, 2015
    Assignee: NOK CORPORATION
    Inventors: Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima, Kenji Minoshima
  • Publication number: 20150122891
    Abstract: The disclosure prevents, with improved reliability, an IC tag from being broken, while ensuring overall flexibility of the IC tag. The IC tag 100 is provided with a covering 140 made of an elastic material, which covers at least the side of the IC tag 100 on which an IC chip 130 is mounted and has a thickness that is larger in its portion 140a that covers a region about the IC chip 130 than in its portion 140b that covers a region outside the region about the IC chip 130. The covering 140 is configured in such a way that at least a part of a boundary of the portion 140a of the covering that covers the region about the IC chip 130 and the portion 140b of the covering that covers the region outside the region about the IC chip 130 has a curved shape.
    Type: Application
    Filed: April 15, 2013
    Publication date: May 7, 2015
    Inventors: Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima, Kenji Minoshima
  • Patent number: 8833772
    Abstract: In order to enhance a shape retaining property of a gasket consisting only of a rubber, prevent damage to a casing for an electronic equipment due to high reactive force of the gasket, and make assembling of the casing easy, a seal structure comprises a gasket installed in a non-adhesion manner between a case and a lid to be interposed in a compressed state when the case and the lid are assembled, and a resin film integrated with the gasket to enhance the shape retaining property of the gasket, the gasket has a portion compressed between the case and the lid when they are assembled, and a portion not compressed between them when assembled and the resin film is integrated with the portion which is not compressed.
    Type: Grant
    Filed: August 6, 2009
    Date of Patent: September 16, 2014
    Assignee: Nippon Mektron, Ltd.
    Inventors: Takashi Sasaki, Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima
  • Publication number: 20110140375
    Abstract: In order to enhance a shape retaining property of a gasket consisting only of a rubber, prevent damage to a casing for an electronic equipment due to high reactive force of the gasket, and make assembling of the casing easy, a seal structure comprises a gasket installed in a non-adhesion manner between a case and a lid to be interposed in a compressed state when the case and the lid are assembled, and a resin film integrated with the gasket to enhance the shape retaining property of the gasket, the gasket has a portion compressed between the case and the lid when they are assembled, and a portion not compressed between them when assembled and the resin film is integrated with the portion which is not compressed.
    Type: Application
    Filed: August 6, 2009
    Publication date: June 16, 2011
    Applicant: NOK CORPORATION
    Inventors: Takashi Sasaki, Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima
  • Patent number: D731990
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: June 16, 2015
    Assignee: NOK CORPORATION
    Inventors: Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima, Kenji Minoshima
  • Patent number: D770991
    Type: Grant
    Filed: May 1, 2014
    Date of Patent: November 8, 2016
    Assignee: NOK Corporation
    Inventors: Tomoko Nakano, Naohiro Fujisawa, Keiichi Miyajima