Patents by Inventor Yoshinobu Baba

Yoshinobu Baba 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: 10877021
    Abstract: A device for biological material detection includes a substrate; a through-hole through which a biological material to be tested passes, the through-hole being formed in the substrate; a molecule that interacts with the biological material to be tested passing through, the molecule being formed in the through-hole; a first chamber member that forms, with at least the surface including the through-hole on one surface side of the substrate, a first chamber to be filled with electrolyte; and a second chamber member that forms, with at least the surface including the through-hole on the other surface side of the substrate, a second chamber to be filled with electrolyte. The biological material to be tested is identified by the waveform of the ion current (passage time, shape, etc.) when the biological material to be tested passes through the through-hole.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: December 29, 2020
    Assignees: OSAKA UNIVERSITY, TOKYO INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY
    Inventors: Makusu Tsutsui, Kazumichi Yokota, Masateru Taniguchi, Tomoji Kawai, Mina Okochi, Masayoshi Tanaka, Yoshinobu Baba, Noritada Kaji, Takao Yasui, Yuji Miyahara, Yukichi Horiguchi
  • Patent number: 10830685
    Abstract: Provided is a device for electrical measurement designed to be able to perform high sensitivity detection by reading not only changes in steady-state current, but also the occurrence of transient current, and an electrical measurement apparatus including the device for electrical measurement. The device for electrical measurement includes a substrate on which are formed at least a sample separation channel and a sample migration channel, as well as a sample measuring unit, with one end of the sample separation channel formed to connect to one end of the sample migration channel, and the sample measuring unit including a first measuring unit connected to the sample migration channel, and a second measuring unit connected to the sample migration channel from the reverse side to the first measuring unit.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: November 10, 2020
    Assignee: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Yoshinobu Baba, Noritada Kaji, Takao Yasui, Tomoji Kawai, Takeshi Yanagida
  • Publication number: 20200255906
    Abstract: The present disclosure provides a body fluid extract comprising micro RNA.
    Type: Application
    Filed: December 10, 2019
    Publication date: August 13, 2020
    Inventors: Takao YASUI, Daiki TAKESHITA, Yoshinobu BABA
  • Publication number: 20200164375
    Abstract: The present disclosure provides a device for separating biomolecules comprising a substrate having a planar surface, nanowires disposed on at least a portion of the planar surface, and a fluid chamber formed to include at least a portion of the nanowires.
    Type: Application
    Filed: July 5, 2019
    Publication date: May 28, 2020
    Inventors: Takao YASUI, Yoshinobu BABA
  • Publication number: 20200033248
    Abstract: In a method for analyzing samples involving the use of a device for analyzing samples, the device for analyzing samples includes at least a movement part through which a sample moves, and a measurement unit that is formed in a middle of the movement part and that measures a value of an ion current when the sample passes through the movement part. The analysis method includes at least a measurement step for measuring the value of the ion current when the sample passes through the movement part, and a determination step for determining a change over time in a quantity of ions from the value of the ion current measured in the measurement step. The quantity of ions includes a quantity of ions that have leaked from the sample during movement of the sample through the movement part.
    Type: Application
    Filed: October 4, 2017
    Publication date: January 30, 2020
    Inventors: Hirotoshi YASAKI, Takao YASUI, Noritada KAJI, Yoshinobu BABA, Tomoji KAWAI, Satoyuki KAWANO, Kentaro DOI, Takeshi YANAGIDA, Mao FUKUYAMA
  • Patent number: 10409186
    Abstract: A toner is provided, where good cleanability is exhibited, abrasion variations of the photo conductor surface is reduced, and contamination of a charge member is reduced. The toner includes toner particles and organic-inorganic composite fine particles on the toner particle surfaces, wherein each of the organic-inorganic composite fine particles is a particle in which inorganic fine particles are exposed at the surfaces of vinyl based resin particles in such a way that convex portions derived from the inorganic fine particles are formed on the surfaces, the average circularity of the toner is 0.960 or more, and the absolute value Q of the amount of triboelectricity of the toner measured by a two-component method and the electrostatic adhesion F of the toner satisfy 0.003?F/Q2?0.040.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: September 10, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yojiro Hotta, Shohei Tsuda, Taiji Katsura, Masaharu Miura, Yoshinobu Baba, Takayuki Itakura
  • Publication number: 20190128888
    Abstract: A device for biological material detection includes a substrate; a through-hole through which a biological material to be tested passes, the through-hole being formed in the substrate; a molecule that interacts with the biological material to be tested passing through, the molecule being formed in the through-hole; a first chamber member that forms, with at least the surface including the through-hole on one surface side of the substrate, a first chamber to be filled with electrolyte; and a second chamber member that forms, with at least the surface including the through-hole on the other surface side of the substrate, a second chamber to be filled with electrolyte. The biological material to be tested is identified by the waveform of the ion current (passage time, shape, etc.) when the biological material to be tested passes through the through-hole.
    Type: Application
    Filed: April 21, 2017
    Publication date: May 2, 2019
    Inventors: Makusu TSUTSUI, Kazumichi YOKOTA, Masateru TANIGUCHI, Tomoji KAWAI, Mina OKOCHI, Masayoshi TANAKA, Yoshinobu BABA, Noritada KAJI, Takao YASUI, Yuji MIYAHARA, Yukichi HORIGUCHI
  • Publication number: 20180296988
    Abstract: To provide a cell-trapping filter which has a high cell trapping efficiency and which is excellent in water resistance. A cell-trapping filter comprising a substrate and a cell-separating mechanism by size, wherein the substrate has, at least on its surface, a layer formed of a fluorinated polymer having units having a biocompatible group, having a fluorine atom content of from 5 to 60 mass % and having a proportion P represented by the following formula of from 0.
    Type: Application
    Filed: June 21, 2018
    Publication date: October 18, 2018
    Applicants: Asahi Glass Company, Limited, National University Corporation Nagoya University
    Inventors: Naoto KIHARA, Ryohei KOGUCHI, Hajime EGUCHI, Masaru HORI, Hiromasa TANAKA, Kenji ISHIKAWA, Yoshinobu BABA, Hiroshi YUKAWA, Daisuke ONOSHIMA, Tetsunari HASE, Daiki KUBOYAMA
  • Publication number: 20180100792
    Abstract: Provided is a device for electrical measurement designed to be able to perform high sensitivity detection by reading not only changes in steady-state current, but also the occurrence of transient current, and an electrical measurement apparatus including the device for electrical measurement. The device for electrical measurement includes a substrate on which are formed at least a sample separation channel and a sample migration channel, as well as a sample measuring unit, with one end of the sample separation channel formed to connect to one end of the sample migration channel, and the sample measuring unit including a first measuring unit connected to the sample migration channel, and a second measuring unit connected to the sample migration channel from the reverse side to the first measuring unit.
    Type: Application
    Filed: April 6, 2016
    Publication date: April 12, 2018
    Inventors: Yoshinobu BABA, Noritada KAJI, Takao YASUI, Tomoji KAWAI, Takeshi YANAGIDA
  • Publication number: 20180080929
    Abstract: The present invention provides a device capable of detecting a plurality of items in a specimen using a single optical system. Microstructures holding specific binding reagents in a photocured hydrophilic resin are arranged in a channel, whereby the reagents do not mix during manufacture of the device, and a device capable of multiplex detection can be manufactured.
    Type: Application
    Filed: March 17, 2016
    Publication date: March 22, 2018
    Inventors: Toshihiro KASAMA, Yoshinobu BABA, Manabu TOKESHI, Nanako NISHIWAKI
  • Patent number: 9811019
    Abstract: A magnetic carrier is provided which can suppress a decrease in glossiness even in a long term use for POD which requires high glossiness. A magnetic carrier includes a filled core particle in which a silicone resin is filled in pores of a porous magnetic core particle and a vinyl resin coating a surface of the filled core particle. In a pore distribution of the porous magnetic core particle measured by a mercury intrusion method, a cumulative pore volume in a pore diameter range of 0.1 to 3.0 ?m is 35.0 to 95.0 mm3/g, and in a pore distribution of the filled core particle measured by a mercury intrusion method, a cumulative pore volume in a pore diameter range of 0.1 to 3.0 ?m is 3.0 to 15.0 mm3/g. The magnetic carrier includes 1.2 to 3.0 parts by mass of the vinyl resin to 100.0 parts by mass of the filled core particle.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 7, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kentaro Kamae, Nozomu Komatsu, Koh Ishigami, Yoshinobu Baba
  • Patent number: 9535006
    Abstract: Semiconductor nanoparticles of the present invention are particles each having a core-shell structure that includes a core and a shell surrounding the core. The core includes (AgIn)xZn2(1-x)S2 (0.4?x?0.95 holds). The shell includes ZnS or ZnO, and the semiconductor nanoparticles each have at least one hydrophilic functional group on a surface of the shell. As the hydrophilic functional group, for example, a carboxyl group or a sulfo group may be mentioned. Since having a low toxicity and a high emission quantum yield, the semiconductor nanoparticles as described above may be used for a fluorescent probe for biological labeling.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: January 3, 2017
    Assignee: NATIONAL UNIVERSITY CORPORATION NAGOYA UNIVERSITY
    Inventors: Hiroshi Yukawa, Hiroyasu Nishi, Tsukasa Torimoto, Yoshinobu Baba
  • Publication number: 20160202621
    Abstract: A toner is provided, where good cleanability is exhibited, abrasion variations of the photo conductor surface is reduced, and contamination of a charge member is reduced. The toner includes toner particles and organic-inorganic composite fine particles on the toner particle surfaces, wherein each of the organic-inorganic composite fine particles is a particle in which inorganic fine particles are exposed at the surfaces of vinyl based resin particles in such a way that convex portions derived from the inorganic fine particles are formed on the surfaces, the average circularity of the toner is 0.960 or more, and the absolute value Q of the amount of triboelectricity of the toner measured by a two-component method and the electrostatic adhesion F of the toner satisfy 0.003?F/Q2?0.040.
    Type: Application
    Filed: July 30, 2014
    Publication date: July 14, 2016
    Inventors: Yojiro Hotta, Shohei Tsuda, Taiji Katsura, Masaharu Miura, Yoshinobu Baba, Takayuki Itakura
  • Patent number: 9063443
    Abstract: The present invention provides a magnetic carrier that can stably impart charge to a toner on a long term basis and that exhibits an excellent toner separation property and thus exhibits an excellent developing performance. This magnetic carrier is a magnetic carrier in which a vinyl resin coats the surface of a resin-filled core in which a resin is filled in pores of a porous ferrite particle, wherein the resistivity, Mg content, and total content of Sr and Ca oxides of the porous ferrite particle exhibit prescribed values and the magnetic carrier has a total area—in the backscattered electron projection image obtained by observation using a scanning electron microscope at an acceleration voltage of 2.0 kV—for a region originating with the porous ferrite particle of from at least 0.2 area % to not more than 5.0 area % with reference to the projected area of the magnetic carrier.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: June 23, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Koh Ishigami, Kentaro Kamae, Nozomu Komatsu, Yoshinobu Baba
  • Patent number: 9058924
    Abstract: A magnetic carrier having a resin-containing ferrite particles each containing a porous ferrite core and a resin in pores of the porous ferrite core, wherein the porous ferrite core has a particular pore diameter corresponding to the maximum logarithmic differential pore volume in a pore diameter range from at least 0.10 ?m to not more than 3.00 ?m, the resistivity of the porous ferrite core is in a particular range, and the porous ferrite core contains an oxide of Mg in a particular amount and contains a particular amount of a oxide of at least one metal selected from the group consisting of Mn, Sr, and Ca.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: June 16, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Nozomu Komatsu, Kentaro Kamae, Koh Ishigami, Yoshinobu Baba
  • Patent number: 9034551
    Abstract: Provided is a two-component developer containing: a magnetic carrier obtained by coating a magnetic core with a resin; and toner, in which: the magnetic core contains at least a ferrite component and at least one kind of an oxide selected from the group consisting of SiO2 and Al2O3; the content of the oxide is 4.0 mass % or more and 40.0 mass % or less with respect to the magnetic core; the magnetic core has a specific resistance of 5.0×104 ?·cm or more and 5.0×108 ?·cm or less at the time of the application of 1,000 V/cm; the magnetic carrier has an intensity of magnetization in 79.6 kA/m of 40.0 Am2/kg or more and 65.0 Am2/kg or less, and a residual magnetization after the application of an external magnetic field of 79.6 kA/m of 3.0 Am2/kg or less; and the toner has a weight-average particle diameter (D4) of 3.0 ?m or more and 10.0 ?m or less and an average circularity of 0.940 or more and 0.990 or less.
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: May 19, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tomoko Endo, Koh Ishigami, Naoki Okamoto, Yoshinobu Baba
  • Patent number: 8974994
    Abstract: Provided is a magnetic carrier satisfactory in terms of the suppression of leakage and solid carrier adhesion, charge-providing performance, and developability. The magnetic carrier is a magnetic carrier, including filled core particles of which pores of porous magnetic core particles are filled with a filling resin composition, and having a surface coated with a coating resin composition, in which the coating resin composition comprises a coating resin and a carbon black, an amount of the coating resin composition is 2.0 parts by mass or more and 5.0 parts by mass or less with respect to 100.0 parts by mass of the filled core particles; and a particle diameter of the carbon black in the coating resin composition Pv at a maximum frequency in a particle size distribution based on a volume of the carbon black is 1.0 ?m or more and 10.0 ?m or less.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: March 10, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kentaro Kamae, Koh Ishigami, Yoshinobu Baba
  • Patent number: 8945805
    Abstract: The present invention provides an image of high image quality by using a magnetic carrier coated with a novel coating resin composition. Further, the present invention stably provides a good image which is hardly influenced by environmental fluctuation and long-term use and has a superior stability of a charging amount when left to stand especially under high temperature and high humidity environments. The present invention also provides a magnetic carrier characterized in that a carrier core surface is coated with a copolymer containing at least, as copolymerization components, an acrylic monomer having a specific structure and an acrylic macromonomer having a specific structure.
    Type: Grant
    Filed: February 26, 2009
    Date of Patent: February 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinobu Baba, Koh Ishigami, Naoki Okamoto, Tomoko Endo
  • Patent number: 8927188
    Abstract: A method of producing a magnetic carrier, having a coating process step in which a surface of a magnetic carrier core is coated with particles of a resin composition by a mechanical impact force. The coating process step has a first coating process step of mixing, dispersing, and fixing the particles on the surface of the core, and a second coating process step, which is performed after the first coating process step, of carrying out a film-forming coating process on the particles. In the first and second coating process steps, the peripheral velocity of the outermost end of stirring members, the coating process time, the product temperature at the end of the coating process, and the glass-transition temperature of the resin component satisfy specific relationships.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: January 6, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takeshi Naka, Masayuki Hama, Kentaro Kamae, Koh Ishigami, Yoshinobu Baba, Hiroaki Kawakami, Yojiro Hotta, Satoshi Mita
  • Publication number: 20150003875
    Abstract: An object of the present invention is to provide a two-component developer which can achieve a high-definition image with a smaller toner laid-on level than a conventional one, provides a color gamut comparable to that of printing, can respond to an increase in printing speed, and allows an image with a stable tinge to be formed even in long-term use. The object can be achieved by a two-component developer containing a cyan toner and a magnetic carrier, the two-component developer being characterized in that the cyan toner has the following characteristics: (i) when the concentration of the cyan toner in a solution of the cyan toner in chloroform is represented by Cc (mg/ml) and the absorbance of the solution at a wavelength of 712 nm is represented by A712, a relationship between Cc and A712 satisfies the relationship of 2.00<A712/Cc<8.15; (ii) the lightness L* and chroma C* of the cyan toner determined in a powder state satisfy the relationships of 25.0?L*?40.0 and 50.0?C*?60.
    Type: Application
    Filed: July 10, 2014
    Publication date: January 1, 2015
    Inventors: Koh Ishigami, Kazuo Terauchi, Noriyoshi Umeda, Tetsuya Ida, Naoki Okamoto, Yojiro Hotta, Yoshinobu Baba, Takayuki Itakura, Takeshi Yamamoto, Manami Haraguchi, Kenta Kubo