Patents by Inventor Kenji Aoki

Kenji Aoki 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: 12681399
    Abstract: A toner comprises a toner particle, wherein the toner contains a crystalline vinyl resin and an amorphous resin, a weight-average particle diameter of the toner is from 4.0 to 12.0 m, an endothermic quantity ?H derived from the crystalline vinyl resin is from 10 to 70 J/g, and in an analysis by time-of-flight secondary ion mass spectrometry of the toner particle while under sputtering, with A(100) as the ion amount of a specific hydrocarbon over a sputtering time during which 100 nm of a polymethyl methacrylate standard sample film are shaved, the ion amount exhibits one or more peak values, and with A(dmax) as a maximum value from among the peak values, the above A(dmax) and A(100) satisfy the expression below. 1.5 ? A ? ( d max ) / A ? ( 100 ) ? 30.
    Type: Grant
    Filed: November 6, 2023
    Date of Patent: July 14, 2026
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Tatsuya Saeki, Kenji Aoki, Naoya Isono, Mariko Yamashita, Yuki Masuda, Megumi Moriya
  • Publication number: 20260173443
    Abstract: A semiconductor device includes a chip that has a main surface, a body region that is formed in a surface layer portion of the main surface, gate electrodes that are arranged on both sides of the body region on the main surface, and a connection electrode that is formed in a region between the gate electrodes on the main surface so as to overlap the body region in a thickness direction.
    Type: Application
    Filed: February 5, 2026
    Publication date: June 18, 2026
    Applicant: ROHM CO., LTD.
    Inventors: Takui SAKAGUCHI, Seigo MORI, Kenji AOKI
  • Patent number: 12643959
    Abstract: Provided are a method for producing a cellulose complex capable of substantially uniformly dispersing cellulose in a resin without adding a compatibilizer (dispersant) while maintaining the properties of cellulose, a method for producing a cellulose complex/resin composition, a cellulose complex, and a cellulose complex/resin composition. The method for producing a cellulose complex includes a mixing step of mixing cellulose having a hydroxy group with a polymer having a reactive group capable of reacting with the hydroxy group and including a nonpolar polymer as a molecular chain, and a step of bonding the hydroxy group and the reactive group.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: June 2, 2026
    Assignee: NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY
    Inventor: Kenji Aoki
  • Publication number: 20260096137
    Abstract: A semiconductor device includes a chip formed by a wide bandgap semiconductor and having a principal surface on which a semiconductor region of a first conductivity type is formed, a base impurity region of a second conductivity type formed in a surface layer portion of the semiconductor region, a first impurity region formed in a surface layer portion of the base impurity region, and a second impurity region of a conductivity type opposite to that of the first impurity region formed in the surface layer portion of the base impurity region, the second impurity region being adjacent to the first impurity region in a first direction, wherein the second impurity region is formed in a band shape extending in a second direction orthogonal to the first direction, and includes a projection portion selectively protruding toward the first impurity region in the first direction.
    Type: Application
    Filed: December 8, 2025
    Publication date: April 2, 2026
    Applicant: ROHM CO., LTD.
    Inventors: Kenji AOKI, Takanori OZAWA, Yasunobu HAYASHI, Kohei TOMINAGA, Seigo MORI, Kyo SAKADUME
  • Publication number: 20260079417
    Abstract: A toner comprising a toner particle, wherein the toner particle comprises a binder resin and an aliphatic alcohol, the binder resin comprises a crystalline vinyl resin and an amorphous vinyl resin, the crystalline vinyl resin comprises a specific monomer unit (a), the amorphous vinyl resin comprises a specific monomer unit (b), the aliphatic alcohol is a specific compound, and the toner particle comprises 100 to 10,000 ppm of the aliphatic alcohol based on a mass of the binder resin.
    Type: Application
    Filed: September 4, 2025
    Publication date: March 19, 2026
    Inventors: KOKI INOUE, KENJI AOKI, SHUHEI IWASAKI, YUKI MASUDA, KAHO YAMADA
  • Patent number: 12578664
    Abstract: A toner having a toner particle having a binder resin, wherein in differential scanning calorimetry using the toner as a sample, a peak temperature of an endothermic peak derived from the binder resin at a first temperature rise is from 50° C. to 70° C., and an endothermic quantity per 1 g of the toner is from 30 J/g to 70 J/g, and when acetonitrile is used as a poor solvent and chloroform is used as a good solvent for a chloroform-soluble component of the binder resin, and a component eluted during a linear change from a mobile phase composition of 100% by volume of acetonitrile to a mobile phase composition of 100% by volume of chloroform is gradient LC analyzed, a specific relationship between the peaks is satisfied.
    Type: Grant
    Filed: April 6, 2022
    Date of Patent: March 17, 2026
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenji Aoki, Takashi Matsui, Yu Yoshida, Yuna Yamamoto
  • Publication number: 20260072367
    Abstract: A toner comprising a toner particle comprising a resin component, wherein the resin component comprises a crystalline vinyl resin, in differential scanning calorimetric measurement of the toner, in a heating process 1 in which a temperature is raised from 20° C. to 180° C. at a ramp rate of 10° C./min, there is one endothermic peak P1 derived from the crystalline vinyl resin, and following the heating process 1, in a heating process 2 in which a temperature is lowered from 180° C. to 20° C. at a ramp down rate of 10° C./min, and a temperature is raised again from 20° C. to 180° C. at a ramp rate of 10° C./min, there are two endothermic peaks P21 and P22 derived from the crystalline vinyl resin, an endothermic quantities of the endothermic peak P1, P21 and P22 satisfy a specific relationship.
    Type: Application
    Filed: August 25, 2025
    Publication date: March 12, 2026
    Inventors: KOKI INOUE, KENJI AOKI, SHUHEI IWASAKI, YUKI MASUDA
  • Publication number: 20260038803
    Abstract: A battery base material for use in a secondary battery, comprising a first base material, and a particle layer arranged on one surface of the first base material, comprising particle of at least one of an active material and a solid electrolyte, wherein the particle layer has a resin-comprising coating film, which is a second base material, the coating film forms an undulating structure having at least either protrusion or depression on a surface of the particle layer; and in a region where the undulating structure is formed, a total number density of the protrusion and the depression measured using a confocal laser microscope is 1/cm2 or more and 40,000/cm2 or less.
    Type: Application
    Filed: July 25, 2025
    Publication date: February 5, 2026
    Inventors: IKUO NAKAZAWA, HIROSHI TANIUCHI, HIROKAZU USAMI, KENTA KUBO, YOHEI MASADA, TAKAHARU AOTANI, KENJI AOKI, MITSUYOSHI ARAKAWA
  • Patent number: 12535750
    Abstract: A toner comprising a toner particle comprising a binder resin and a release agent, wherein the binder resin comprises a crystalline resin A, the crystalline resin A comprises a monomer unit derived from a monomer (a), the monomer (a) is at least one selected from the group consisting of (meth)acrylic acid esters having an alkyl group with 18 to 36 carbon atoms, the peak temperature and endothermic quantity at an endothermic peak derived from the crystalline resin A in DSC measurements using the toner satisfy specific relationships, and the release agent is at least one selected from the group consisting of hydrocarbon-based waxes and ester waxes.
    Type: Grant
    Filed: June 3, 2022
    Date of Patent: January 27, 2026
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenji Aoki, Takashi Matsui, Takayuki Toyoda, Tsutomu Shimano, Shohei Shibahara, Yuna Yamamoto
  • Patent number: 12526924
    Abstract: Provided is a conductive adhesive sheet that has excellent connection stability even containing conductive particles in a small proportion. The inventive conductive adhesive sheet contains a binder component and conductive particles. The conductive particles are distributively arranged. Assume that all the conductive particles are regularly arranged; and that an optional region of the conductive adhesive sheet is viewed in plan view so that a distribution number Np of the distributed conductive particles be 9 to 25, a condition: 1.5X?Y?100X is met, where X represents the average of equivalent circle diameters of the distributed conductive particles; and Y represents the center-to-center distance between adjacent two of the distributed conductive particles, which are regularly arranged in the plan view. The ratio N/Np is 1.0 to 100.0, where N represents the number of the primary particles in the optional region.
    Type: Grant
    Filed: January 19, 2024
    Date of Patent: January 13, 2026
    Assignee: Tatsuta Electric Wire & Cable Co., Ltd.
    Inventors: Yuusuke Haruna, Kenji Aoki, Hiroshi Tajima, Sougo Ishioka
  • Patent number: 12517454
    Abstract: An image forming apparatus includes a first roller pair including a first roller and a second roller, a first driving unit, a second roller pair, a second driving unit, an image forming unit, and a control unit configured to execute a first mode and a second mode. The second mode includes (1) a first processing, (2) a second processing, and (3) a third processing of controlling the first driving unit such that the rotational speed of the first roller pair becomes faster than the second rotational speed. The first mode includes (1) a fourth processing, (2) a fifth processing, and (3) a sixth processing of controlling the first driving unit such that the rotational speed of the first roller pair is decelerated from the first rotational speed to equal to or less than the second rotational speed.
    Type: Grant
    Filed: August 29, 2024
    Date of Patent: January 6, 2026
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kengo Sato, Kenji Aoki
  • Patent number: 12509315
    Abstract: A sheet conveyance apparatus includes a first roller pair, a second roller pair, an abutment portion, an oblique feeding portion, a detection portion, a moving portion a contact/separation portion, and a control portion. If a first sheet whose length is a first length is conveyed, the control portion causes the moving portion to move the first roller pair, and then causes the first sheet to be conveyed from the first roller pair to the oblique feeding portion through the second roller pair that is in the separation state, and if a second sheet whose length is a second length shorter than the first length is conveyed, the control portion causes the moving portion to move the first roller pair, and then causes the second sheet to be conveyed from the first roller pair to the oblique feeding portion via the second roller pair that is in the contact state.
    Type: Grant
    Filed: June 21, 2023
    Date of Patent: December 30, 2025
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenji Aoki, Kengo Sato
  • Publication number: 20250333617
    Abstract: Provided are a resin composition for a stereo-forming apparatus, a filament for the stereo-forming apparatus, a molded object, and a pellet for the stereo-forming apparatus capable of improving adhesiveness to a stage or the like of a stereo-forming apparatus and moldability at the time of molding. The resin composition for a stereo-forming apparatus includes: a thermoplastic resin (A) and a polymer (B) having reactive groups and non-polar polymer molecular chains, wherein a weight-average molecular weight of the thermoplastic resin (A) is higher than a weight-average molecular weight of the polymer (B) having reactive groups and non-polar polymer molecular chains, and with respect to 100 parts by mass of the thermal plastic resin (A), the polymer (B) having reactive groups and non-polar polymer molecular chains is contained more than 10.3 parts by mass and 37 parts by mass or less.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 30, 2025
    Applicant: JOTO TECHNO CO., LTD.
    Inventors: Yuki AKIYAMA, Kenji AOKI
  • Patent number: 12449742
    Abstract: A toner comprises a toner particle comprising a resin A and a resin B, wherein the resin A has a structure represented by a predetermined general formula, and the resin B has a monomer unit represented by a predetermined general formula, and a toner manufacturing method comprises a step of dispersing a toner base particle comprising the resin B in an aqueous medium to obtain a toner slurry, and a step of adding a radical polymerization initiator and a monomer composition comprising a monomer represented by a predetermined general formula to the resulting toner slurry to form the resin A on a surface of the toner base particle.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: October 21, 2025
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yu Yoshida, Takashi Matsui, Kenji Aoki, Tsuneyoshi Tominaga, Shohei Shibahara, Mariko Yamashita, Yuna Yamamoto, Kenji Ookubo, Takashi Kenmoku, Taku Shimoda, Masashi Kawamura
  • Patent number: 12386278
    Abstract: A toner contains a toner particle containing a resin component and a wax. The resin component contains a vinyl polymer A having a monomer unit A represented by the formula (A): In a luminance histogram created from STEM observation, the total pixel value C in luminance 0 to 9 and the total pixel value A in luminance 0 to 245 satisfy 0.000?C/A?0.250. When the pixel value in luminance 10 to 245 has a maximum value P at luminance X, luminance M-luminance N ranges from 120 to 235, wherein the luminance M denotes a luminance at which the pixel value falls below 20% of P for the first time from the luminance X to 245, and the luminance N denotes a luminance at which the pixel value falls below 20% of the P for the first time from the luminance X to 10.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: August 12, 2025
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuna Yamamoto, Shohei Shibahara, Kenji Aoki, Tsutomu Shimano, Takashi Matsui, Takayuki Toyoda
  • Publication number: 20250199429
    Abstract: A toner including a toner particle, wherein the toner particle includes a core containing a binder resin, and a shell covering the core, the binder resin includes a crystalline vinyl resin (A), the crystalline vinyl resin (A) containing at least 5.0% by mass of a monomer unit (a) having at least two of alkyl group having 16 to 30 carbon atoms, the shell is an amorphous resin, and the SP value of the amorphous resin and the SP value of the crystalline vinyl resin (A) satisfy specific relationship.
    Type: Application
    Filed: December 5, 2024
    Publication date: June 19, 2025
    Inventors: KENTARO YAMAWAKI, YUKI MASUDA, SHUHEI IWASAKI, KENJI AOKI
  • Publication number: 20250199428
    Abstract: A toner comprising a toner particle comprising a binder resin, wherein the binder resin comprises a crystalline vinyl resin and an amorphous vinyl resin, the crystalline vinyl resin comprises 5.0% by mass or more of a specific monomer unit (a) having at least two alkyl groups having 16 to 30 carbon atoms, based on the mass of the crystalline vinyl resin, and the amorphous vinyl resin comprises a tetrahydrofuran insoluble matter.
    Type: Application
    Filed: December 6, 2024
    Publication date: June 19, 2025
    Inventors: SHUHEI IWASAKI, KENTARO YAMAWAKI, YUKI MASUDA, KENJI AOKI
  • Publication number: 20250199430
    Abstract: A toner includes toner particles containing a resin component. The toner particles contain, as the resin component, a crystalline vinyl resin having a unit (a) represented by formula (1). The resin component contains the unit (a) in an amount of 15.0 mass % or more and 40.0 mass % or less based on the mass of the resin component. The content of the unit (a) in a component separated by gradient LC analysis of an acetonitrile/chloroform eluted component of chloroform soluble matter W of the toner particles and the storage elastic modulus at 100° C. have specific relationships.
    Type: Application
    Filed: December 10, 2024
    Publication date: June 19, 2025
    Inventors: KENJI AOKI, SHUHEI IWASAKI, YUKI MASUDA, KOKI INOUE
  • Publication number: 20250199425
    Abstract: A toner comprising a toner particle comprising a binder resin and a release agent, wherein the binder resin comprises a crystalline vinyl resin, the crystalline vinyl resin comprises 5.0% by mass or more of a monomer unit (a) represented by a following formula (1), based on a mass of the crystalline vinyl resin, in the formula (1), at least two of R1 to R4 are each independently —X—COOR5, and a remaining is each independently a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, X is a single bond or an alkylene group having 1 or 2 carbon atoms, R5 is an alkyl group having 16 to 30 carbon atoms, and a peak molecular weight Mp of the release agent is 800 or more.
    Type: Application
    Filed: December 6, 2024
    Publication date: June 19, 2025
    Inventors: YUKI MASUDA, KENTARO YAMAWAKI, SHUHEI IWASAKI, KENJI AOKI
  • Publication number: 20250116946
    Abstract: A toner having a toner particle including a binder resin and a release agent is provided, wherein the binder resin includes a crystalline resin and an amorphous resin, where in differential scanning calorimetry of the toner, a temperature is raised to obtain a differential scanning calorimetry curve A and then the temperature is lowered to obtain a differential scanning calorimetry curve B, the differential scanning calorimetry curve A has endothermic peaks derived from the crystalline resin and the release agent, the differential scanning calorimetry curve B has exothermic peaks derived from the crystalline resin and the release agent, and these endothermic peaks and exothermic peaks satisfy specific relationships, and a storage elastic modulus G?(TmB) of the toner at the endothermic peak temperature of the crystalline resin is 1.0×105 Pa to 1.0×108 Pa.
    Type: Application
    Filed: October 1, 2024
    Publication date: April 10, 2025
    Inventors: KENTARO YAMAWAKI, KENJI AOKI, TATSUYA SAEKI, YUKI MASUDA