Patents by Inventor Sakae Takeuchi

Sakae Takeuchi 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: 12359103
    Abstract: A pressure sensitive adhesive particle includes a styrene resin; and a (meth)acrylate resin, wherein the (meth)acrylate resin contains two kinds of (meth)acrylates as a polymerization component in which the weight proportion of the (meth)acrylate to the total polymerization components is 90% by weight or more, and has two glass transition points in which a difference between the lowest glass transition temperature and the highest glass transition temperature is 30° C. or higher.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 15, 2025
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Takahiro Ishizuka, Satoshi Kamiwaki, Sumiaki Yamasaki, Yoshifumi Iida, Sakae Takeuchi, Satomi Kashiwagi, Susumu Yoshino
  • Patent number: 12351467
    Abstract: A silica particle includes: a quaternary ammonium salt, in which the following expressions are satisfied, 0.90?FBEFORE/FAFTER?1.10, and 5?FSINTERING/FBEFORE?20, in which FBEFORE represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing, which is obtained from a pore distribution curve in a nitrogen gas adsorption method, FAFTER represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles after washing, which is obtained from the pore distribution curve in the nitrogen gas adsorption method, and FSINTERING represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles before washing and after sintering at 600° C., which is obtained from the pore distribution curve in the nitrogen gas adsorption method.
    Type: Grant
    Filed: November 21, 2023
    Date of Patent: July 8, 2025
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yuka Zenitani, Koji Sasaki, Sakae Takeuchi, Yoshifumi Eri, Takahiro Mizuguchi
  • Publication number: 20250170030
    Abstract: Porous cellulose particles contain a cellulose, a cellulose derivative, or a mixture thereof as a main component, in which the porous cellulose particles have open cells extending from a particle surface to a particle interior, and have a BET specific surface area of 1.7 m2/g or more and 24.0 m2/g or less.
    Type: Application
    Filed: August 19, 2024
    Publication date: May 29, 2025
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Shota MATOBA, Masahiro OKI, Takahiro ISHIZUKA, Hideaki YOSHIKAWA, Yuko IWADATE, Sakae TAKEUCHI
  • Publication number: 20250134795
    Abstract: Cellulose particles include mother particles, containing cellulose as a principal component; and a coating layer that coats the mother particles, in which the average circularity of the cellulose particles is 0.97 or more, and the relation between carbon atom amount Cs and oxygen atom amount Os in the cellulose particles measured by X-ray photoelectron spectroscopy satisfies the formula A1: Cs/Os?2.0.
    Type: Application
    Filed: August 19, 2024
    Publication date: May 1, 2025
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kazusei YOSHIDA, Ayu NAITO, Satomi KASHIWAGI, Takeshi IWANAGA, Yuko IWADATE, Sakae TAKEUCHI
  • Patent number: 12287607
    Abstract: An electrostatic charge image developing toner contains toner particles and silica particles that are added to an exterior of the toner particles and contain a nitrogen element-containing compound containing a molybdenum element, in which in the silica particles, a ratio (Mo/Si) of Net intensity of the molybdenum element to Net intensity of a silicon element measured by X-ray fluorescence analysis is 0.035 or more and 0.35 or less.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: April 29, 2025
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Shimpei Takagi, Sakae Takeuchi, Yuka Zenitani, Koji Sasaki, Yoshifumi Eri, Mai Mochida
  • Patent number: 12251956
    Abstract: A method for producing a printed material includes forming a color image having an image area ratio of 20% or less on a peripheral edge portion of a recording medium by using a coloring material; providing pressure-induced phase transition particles to a region of the recording medium, the region including the peripheral edge portion; bonding the color image and the pressure-induced phase transition particles onto the recording medium; and folding the recording medium having the color image and the pressure-induced phase transition particles bonded thereon and pressure-bonding the folded recording medium, or pressure-bonding the recording medium having the color image and the pressure-induced phase transition particles bonded thereon and another recording medium placed on top of each other.
    Type: Grant
    Filed: March 14, 2024
    Date of Patent: March 18, 2025
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Sumiaki Yamasaki, Sakae Takeuchi, Hiroshi Saegusa, Yoichiro Emura, Yoshifumi Iida, Satoshi Kamiwaki, Susumu Yoshino
  • Patent number: 12215033
    Abstract: Silica particles contain a nitrogen element-containing compound containing a molybdenum element, in which a ratio (Mo/Si) of Net intensity of the molybdenum element to Net intensity of a silicon element measured by X-ray fluorescence analysis is 0.035 or more and 0.35 or less.
    Type: Grant
    Filed: January 26, 2022
    Date of Patent: February 4, 2025
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yuka Zenitani, Sakae Takeuchi, Koji Sasaki, Yoshifumi Eri, Mai Mochida
  • Patent number: 12162769
    Abstract: Silica particles have silica base particles, a structure that covers at least a part of a surface of the silica base particles and is configured with a reaction product of a trifunctional silane coupling agent, and a nitrogen element-containing compound, in which a content of the nitrogen element-containing compound with respect to the silica particles is 0.005% by mass or more and 0.50% by mass or less in terms of N atoms, and the silica particles have a degree of hydrophobicity of 10% or more and 60% or less and a volume resistivity of 1×108 ?·cm or more and 1×1012.5 ?·cm or less.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: December 10, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Koji Sasaki, Sakae Takeuchi, Yuka Zenitani, Yoshifumi Eri, Mai Mochida
  • Patent number: 12077443
    Abstract: Silica particles include a nitrogen-containing compound. When the volumes of pores having a diameter of 1 nm or more and 50 nm or less, the volumes being determined from a pore size distribution curve of the silica particles before and after the silica particles are baked at 350° C., the pore size distribution curve being obtained by nitrogen gas adsorption, are defined as A and B, respectively, B/A is 1.2 or more and 5 or less and B is 0.2 cm3/g or more and 3 cm3/g or less.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: September 3, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yuka Zenitani, Sakae Takeuchi, Koji Sasaki, Yoshifumi Eri, Mai Mochida
  • Publication number: 20240262125
    Abstract: A method for producing a printed material includes forming a color image having an image area ratio of 20% or less on a peripheral edge portion of a recording medium by using a coloring material; providing pressure-induced phase transition particles to a region of the recording medium, the region including the peripheral edge portion; bonding the color image and the pressure-induced phase transition particles onto the recording medium; and folding the recording medium having the color image and the pressure-induced phase transition particles bonded thereon and pressure-bonding the folded recording medium, or pressure-bonding the recording medium having the color image and the pressure-induced phase transition particles bonded thereon and another recording medium placed on top of each other.
    Type: Application
    Filed: March 14, 2024
    Publication date: August 8, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Sumiaki YAMASAKI, Sakae TAKEUCHI, Hiroshi SAEGUSA, Yoichiro EMURA, Yoshifumi IIDA, Satoshi KAMIWAKI, Susumu YOSHINO
  • Patent number: 11964507
    Abstract: A method for producing a printed material includes forming a color image having an image area ratio of 20% or less on a peripheral edge portion of a recording medium by using a coloring material; providing pressure-induced phase transition particles to a region of the recording medium, the region including the peripheral edge portion; bonding the color image and the pressure-induced phase transition particles onto the recording medium; and folding the recording medium having the color image and the pressure-induced phase transition particles bonded thereon and pressure-bonding the folded recording medium, or pressure-bonding the recording medium having the color image and the pressure-induced phase transition particles bonded thereon and another recording medium placed on top of each other.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: April 23, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Sumiaki Yamasaki, Sakae Takeuchi, Hiroshi Saegusa, Yoichiro Emura, Yoshifumi Iida, Satoshi Kamiwaki, Susumu Yoshino
  • Publication number: 20240126186
    Abstract: A silica particle contains a nitrogen-containing compound, ?/? is 0.30 or greater and 0.80 or less, where ? and ? are the BET specific surface areas of the silica particle before and after baking at 350° C., respectively, and the absolute ratio of the triboelectric series of the silica particle before baking at 350° C. to that of the silica particle after baking at 350° C. is 0.10 1or greater and 0.85 or less.
    Type: Application
    Filed: September 18, 2023
    Publication date: April 18, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Kota NOHARA, Sakae TAKEUCHI, Yuka ZENITANI, Hajime SUGAHARA, Mai MOCHIDA, Mieko SEKI
  • Publication number: 20240118644
    Abstract: Silica particles having silica base particles, a coating structure that coats the silica base particles and is composed of a reaction product of a trifunctional silane compound, and a nitrogen element-containing compound that has adhered to the coating structure and contains a molybdenum element, in which in a molybdenum element map created by SEM-EDX, a ratio of a total area of a region forming a lump having a long diameter of 500 nm or more is 5% or less to a total area of the molybdenum element.
    Type: Application
    Filed: May 7, 2023
    Publication date: April 11, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Mieko SEKI, Sakae TAKEUCHI, Yuka ZENITANI, Hajime SUGAHARA, Mai MOCHIDA, Kota NOHARA
  • Publication number: 20240118645
    Abstract: A silica particle is provided in which a pore size distribution curve obtained by nitrogen gas adsorption of the silica particle after baking at 350° C. has at least one peak at a pore diameter of 2 nm or less and at least one peak at a pore diameter of more than 2 nm and 50 nm or less, and D/B is 0.50 or greater and 2.50 or less, where D and B are the volumes of pores having a diameter of 2 nm or less and a diameter of 2 nm or more and 25 nm or less, respectively, determined from the pore size distribution curve obtained by nitrogen gas adsorption of the silica particle after baking at 350° C.
    Type: Application
    Filed: September 18, 2023
    Publication date: April 11, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Mai MOCHIDA, Sakae TAKEUCHI, Yuka ZENITANI, Hajime SUGAHARA, Mieko SEKI, Kota NOHARA
  • Publication number: 20240109781
    Abstract: A manufacturing method of silica particles includes coating of forming a coating structure composed of a reaction product of a trifunctional silane compound on a surface of silica base particles, attaching a nitrogen element-containing compound containing a molybdenum element to the coating structure in a reaction solution which contains water, an alcohol, silica particles having the coating structure composed of the reaction product of the trifunctional silane compound, the nitrogen element-containing compound containing the molybdenum element, and at least one compound selected from the group consisting of ammonia and an amine and in which a total amount of ammonia and an amine is 0.2% by mass or more and 4.5% by mass or less, and drying of removing the water and the alcohol from the reaction solution.
    Type: Application
    Filed: May 14, 2023
    Publication date: April 4, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Hajime SUGAHARA, Sakae TAKEUCHI, Yuka ZENITANI, Mai MOCHIDA, Kota NOHARA, Mieko SEKI
  • Publication number: 20240092645
    Abstract: A silica particle includes: a quaternary ammonium salt, in which the following expressions are satisfied, 0.90?FBEFORE/FAFTER?1.10, and 5?FSINTERING/FBEFORE?20, in which FBEFORE represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing, which is obtained from a pore distribution curve in a nitrogen gas adsorption method, FAFTER represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles after washing, which is obtained from the pore distribution curve in the nitrogen gas adsorption method, and FSINTERING represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles before washing and after sintering at 600° C., which is obtained from the pore distribution curve in the nitrogen gas adsorption method.
    Type: Application
    Filed: November 21, 2023
    Publication date: March 21, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Yuka Zenitani, Koji Sasaki, Sakae Takeuchi, Yoshifumi Eri, Takahiro Mizuguchi
  • Patent number: 11866340
    Abstract: A silica particle includes: a quaternary ammonium salt, in which the following expressions are satisfied, 0.90?FBEFORE/FAFTER?1.10, and 5?FSINTERING/FBEFORE?20, in which FBEFORE represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing, which is obtained from a pore distribution curve in a nitrogen gas adsorption method, FAFTER represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles after washing, which is obtained from the pore distribution curve in the nitrogen gas adsorption method, and FSINTERING represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles before washing and after sintering at 600° C., which is obtained from the pore distribution curve in the nitrogen gas adsorption method.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: January 9, 2024
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Yuka Zenitani, Koji Sasaki, Sakae Takeuchi, Yoshifumi Eri, Takahiro Mizuguchi
  • Publication number: 20240002637
    Abstract: Resin particles include resin base particles and silica particles on surfaces of the resin base particles. The silica particles contain a quaternary ammonium salt and have hydrophobized surfaces. A difference (detection temperature A?detection temperature B) between a detection temperature A and a detection temperature B is more than 50° C., where the detection temperature A is a detection temperature from a pyrolysis product of the quaternary ammonium salt determined by pyrolysis mass spectrometry of the resin particles before cleaning, and the detection temperature B is a detection temperature from the pyrolysis product of the quaternary ammonium salt determined by pyrolysis mass spectrometry of the resin particles after cleaning.
    Type: Application
    Filed: September 19, 2023
    Publication date: January 4, 2024
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Koji SASAKI, Takahiro MIZUGUCHI, Yuka ZENITANI, Sakae TAKEUCHI, Yoshifumi ERI
  • Patent number: 11795302
    Abstract: Resin particles include resin base particles and silica particles on surfaces of the resin base particles. The silica particles contain a quaternary ammonium salt and have hydrophobized surfaces. A difference (detection temperature A?detection temperature B) between a detection temperature A and a detection temperature B is more than 50° C., where the detection temperature A is a detection temperature from a pyrolysis product of the quaternary ammonium salt determined by pyrolysis mass spectrometry of the resin particles before cleaning, and the detection temperature B is a detection temperature from the pyrolysis product of the quaternary ammonium salt determined by pyrolysis mass spectrometry of the resin particles after cleaning.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: October 24, 2023
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Koji Sasaki, Takahiro Mizuguchi, Yuka Zenitani, Sakae Takeuchi, Yoshifumi Eri
  • Publication number: 20230107000
    Abstract: An electrostatic charge image developing toner has toner particles and silica particles that are added to an exterior of the toner particles and contain a nitrogen element-containing compound, in which in a case where A represents a pore volume of pores of the silica particles having a diameter of 1 nm or more and 50 nm or less determined from a pore size distribution curve obtained by a nitrogen adsorption method before baking at 350° C., and B represents a pore volume of pores of the silica particles having a diameter of 1 nm or more and 50 nm or less determined from a pore size distribution curve obtained by a nitrogen adsorption method after baking at 350° C., B/A is 1.2 or more and 5 or less, and B is 0.2 cm3/g or more and 3 cm3/g or less.
    Type: Application
    Filed: May 20, 2022
    Publication date: April 6, 2023
    Applicant: FUJIFILM Business Innovation Corp.
    Inventors: Yuka ZENITANI, Shimpei TAKAGI, Sakae TAKEUCHI, Koji SASAKI, Yoshifumi ERI, Mai MOCHIDA