Patents by Inventor Yukinari Shibagaki

Yukinari Shibagaki 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: 20230235689
    Abstract: A method for controlling a reductant generation device 100, the reductant generation device 100 including: a sprayer 10 capable of spraying a reductant precursor 50; and a heater 20 comprising a ceramic substrate 21, the heater 20 being arranged on a downstream side of the sprayer 10 and capable of heating the reductant precursor 50 to generate a reductant 60. The method includes: a permeation step of spraying the reductant precursor 50 from the sprayer 10 and permeating the ceramic substrate 21 with the reductant precursor 50 when the heater is not heated; and after the permeation step, a heating step A of heating the reductant precursor 50 by the heater 20 and generating the reductant 60 while spraying the reductant precursor 50 from the sprayer 10.
    Type: Application
    Filed: March 28, 2023
    Publication date: July 27, 2023
    Applicant: NGK INSULATORS, LTD.
    Inventors: Katsumi SAIKI, Yukinari SHIBAGAKI
  • Patent number: 11674425
    Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an inner cylinder being configured to house the honeycomb structure; a urea sprayer arranged at one end of the inner cylinder; and an outer cylinder arranged on an outer peripheral side of the inner cylinder, the outer cylinder being spaced apart from the inner cylinder. A flow path through which the carrier gas passes is formed between the inner cylinder and the outer cylinder.
    Type: Grant
    Filed: April 2, 2021
    Date of Patent: June 13, 2023
    Assignee: NGK INSULATORS, LTD.
    Inventors: Katsumi Saiki, Yukinari Shibagaki
  • Patent number: 11661879
    Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, the glass contains barium, and the glass has a content of barium of 5 mol % or more.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: May 30, 2023
    Assignee: NGK INSULATORS, LTD.
    Inventors: Daichi Tanaka, Yukinari Shibagaki
  • Patent number: 11661875
    Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass containing a crystalline substance, and the glass contains silicon, boron, and magnesium.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: May 30, 2023
    Assignee: NGK INSULATORS, LTD.
    Inventors: Daichi Tanaka, Yukinari Shibagaki
  • Patent number: 11555433
    Abstract: A reductant injecting device, including: a honeycomb structure including: a pillar shaped honeycomb structure portion having partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder having an inlet side end portion and an outlet side end portion, the inlet side end portion comprising a carrier gas introduction port being configured to introduce a carrier gas, the outlet side end portion comprising an injection port being configured to inject ammonia; a urea sprayer arranged at one end of the outer cylinder; and a spray direction switcher configured to be able to switch a spray direction of the aqueous urea solution.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: January 17, 2023
    Assignee: NGK Insulators, Ltd.
    Inventors: Katsumi Saiki, Yukinari Shibagaki
  • Patent number: 11536180
    Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, and the glass has a content of an alkali metal element of 1,000 ppm or less.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: December 27, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukinari Shibagaki, Daichi Tanaka
  • Publication number: 20220275745
    Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, and the glass has a content of an alkali metal element of 1,000 ppm or less.
    Type: Application
    Filed: December 6, 2021
    Publication date: September 1, 2022
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yukinari SHIBAGAKI, Daichi TANAKA
  • Publication number: 20220275746
    Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass, the glass contains barium, and the glass has a content of barium of 5 mol % or more.
    Type: Application
    Filed: December 6, 2021
    Publication date: September 1, 2022
    Applicant: NGK INSULATORS, LTD.
    Inventors: Daichi TANAKA, Yukinari SHIBAGAKI
  • Publication number: 20220275743
    Abstract: A tubular member for an exhaust gas treatment device according to at least one embodiment of the present invention includes: a tubular main body made of a metal; and an insulating layer formed at least on an inner peripheral surface of the tubular main body. The insulating layer contains glass containing a crystalline substance, and the glass contains silicon, boron, and magnesium.
    Type: Application
    Filed: December 6, 2021
    Publication date: September 1, 2022
    Applicant: NGK INSULATORS, LTD.
    Inventors: Daichi TANAKA, Yukinari SHIBAGAKI
  • Patent number: 11391191
    Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder being configured to house the honeycomb structure, the outer cylinder having a carrier gas introduction port on the fluid inflow end face side; a urea sprayer arranged at one end of the outer cylinder; a carrier gas introduction cylinder provided at the carrier gas introduction port of the outer cylinder; and a carrier gas flow rate amplifier provided in the carrier gas introduction cylinder.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: July 19, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Katsumi Saiki, Yukinari Shibagaki
  • Patent number: 11312661
    Abstract: A honeycomb structure including a honeycomb portion having porous partition walls extending from an inflow end face to an outflow end face, an outermost peripheral wall, and a pair of electrode layers on a side surface of the honeycomb portion. Each electrode layer extends in a direction of the cells. One electrode layer is disposed on a side opposite to the other electrode layer across a center of the honeycomb portion in a cross section orthogonal to the extending direction of the cells. The honeycomb structure portion includes first cells opened on the inflow side and plugged on the outflow side, and second cells opened on the outflow side and plugged on the inflow side. A middle of each length of the pair of electrode layers is closer to the outflow side than a middle position of a length of the honeycomb portion in the extending direction of the cells.
    Type: Grant
    Filed: March 11, 2019
    Date of Patent: April 26, 2022
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshiyuki Kasai, Yukinari Shibagaki
  • Publication number: 20210222599
    Abstract: A reductant injecting device, including: a honeycomb structure including: a pillar shaped honeycomb structure portion having partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder having an inlet side end portion and an outlet side end portion, the inlet side end portion comprising a carrier gas introduction port being configured to introduce a carrier gas, the outlet side end portion comprising an injection port being configured to inject ammonia; a urea sprayer arranged at one end of the outer cylinder; and a spray direction switcher configured to be able to switch a spray direction of the aqueous urea solution.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 22, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Katsumi SAIKI, Yukinari SHIBAGAKI
  • Publication number: 20210222603
    Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an outer cylinder being configured to house the honeycomb structure, the outer cylinder having a carrier gas introduction port on the fluid inflow end face side; a urea sprayer arranged at one end of the outer cylinder; a carrier gas introduction cylinder provided at the carrier gas introduction port of the outer cylinder; and a carrier gas flow rate amplifier provided in the carrier gas introduction cylinder.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 22, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Katsumi SAIKI, Yukinari SHIBAGAKI
  • Publication number: 20210222602
    Abstract: A reductant injecting device includes: a honeycomb structure comprising: a pillar shaped honeycomb structure portion having a partition wall that defines a plurality of cells each extending from a fluid inflow end face to a fluid outflow end face; and at least one pair of electrode portions arranged on a side surface of the honeycomb structure portion; an inner cylinder being configured to house the honeycomb structure; a urea sprayer arranged at one end of the inner cylinder; and an outer cylinder arranged on an outer peripheral side of the inner cylinder, the outer cylinder being spaced apart from the inner cylinder. A flow path through which the carrier gas passes is formed between the inner cylinder and the outer cylinder.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Applicant: NGK INSULATORS, LTD.
    Inventors: Katsumi SAIKI, Yukinari SHIBAGAKI
  • Publication number: 20190300446
    Abstract: A honeycomb structure including a honeycomb portion having porous partition walls extending from an inflow end face to an outflow end face, an outermost peripheral wall, and a pair of electrode layers on a side surface of the honeycomb portion. Each electrode layer extends in a direction of the cells. One electrode layer is disposed on a side opposite to the other electrode layer across a center of the honeycomb portion in a cross section orthogonal to the extending direction of the cells. The honeycomb structure portion includes first cells opened on the inflow side and plugged on the outflow side, and second cells opened on the outflow side and plugged on the inflow side. A middle of each length of the pair of electrode layers is closer to the outflow side than a middle position of a length of the honeycomb portion in the extending direction of the cells.
    Type: Application
    Filed: March 11, 2019
    Publication date: October 3, 2019
    Applicant: NGK INSULATORS, LTD.
    Inventors: Yoshiyuki KASAI, Yukinari Shibagaki
  • Patent number: 6854969
    Abstract: A honeycomb structure molding apparatus 1 having a spinneret 4 provided with a back pore part 3 for introducing a molding material and a slit part 2 for extruding the molding material, and a press plate 5 for fixing the spinneret 4, in which the spinneret 4 comprises an inner side part 11 and an outer peripheral part 12, the inner side part 11 is protruded to the downstream side to form a level difference part 15 between the inner side part 11 and the outer peripheral part 15, the press plate 5 is opened opposing the inner side part 12 of the spinneret 4 and presses the downstream side of the outer peripheral part 12 of the spinneret 4 through a gap part 7, and there is provided a gap adjusting means 130 capable of changing width of the gap of the gap part 7.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: February 15, 2005
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukinari Shibagaki, Takeyuki Isii, Yoshimasa Kondo
  • Patent number: 6814562
    Abstract: A honeycomb structure molding apparatus being free from defects in cells and having a higher strength with thin partition walls forming the cells and having a small cell density; and the apparatus having a plate-like spinneret provided with back pores for introducing a molding material and slits for extruding the molding material, and a press plate for fixing spinneret, the spinneret comprising an inner side and outer peripheral parts, the inner side part protruding downstream to form a level difference part therebetween, the press plate opening opposing the inner side part of the spinneret and presses the outer peripheral part of the spinneret downstream, and width W (mm) of slits, length L 1 (mm) of slits of the inner side part and length L 2 (mm) of slits of the outer peripheral part satisfying following two formulas: L1−L2≧0.4 mm L2≧0.015/W×L1.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: November 9, 2004
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukinari Shibagaki, Takeyuki Ishii, Yoshimasa Kondo
  • Patent number: 6696130
    Abstract: A ceramic honeycomb structure has an open frontal area of 50% to 85%, a porosity of 0.1% to 10%, and a proportion of the volume of pores of 1 &mgr;m or larger in diameter, in total pore volume, of 20% or more; a regenerative thermal oxidizer using the ceramic honeycomb structure. The ceramic honeycomb structure has a small porosity and, therefore, has a sufficient heat accumulation capacity and hardly causes floating by gas pressure; has controlled pore diameters and, therefore, hardly shows adsorption of VOC or the like, or rupture; and has controlled contraction and, therefore, has a large GSA.
    Type: Grant
    Filed: March 24, 2000
    Date of Patent: February 24, 2004
    Assignee: NGK Insulators, Ltd.
    Inventors: Yoshiyuki Kasai, Takashi Harada, Yukinari Shibagaki, Akito Higuchi
  • Patent number: 6621034
    Abstract: The method includes the steps of preparing a die main body; performing batch supply hole machining with respect to one principal plane of the die main body to form batch supply holes; using a cutting apparatus to perform slit machining with respect to the other principal plane of the die main body to form slits; without removing the cutting apparatus from the die main body, continuously performing lateral hole machining to form the batch bold portions, which are arranged at least at intersecting portions in the die main body between the batch supply holes and the slits and are arranged corresponding to the slits; and there after removing the cutting apparatus from the die main body to thereby form an integral die. Alternatively, the above slit machining and continuously performing lacteral hole machining steps can be performed first and followed by performing the batch supply hole machining step.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: September 16, 2003
    Assignee: NGK Insulators, Ltd.
    Inventors: Yukinari Shibagaki, Yoshimasa Kondo, Takeyuki Ishii
  • Patent number: 6602822
    Abstract: A catalyst for exhaust gas purification includes (1) a monolithic carrier having passages and (2) palladium-loaded alumina obtained by immersing alumina in a palladium solution and then firing the resulting alumina and loaded on the monolithic carrier as a catalyst layer. In the catalyst, the catalyst layer loaded on the partition walls of the passages of the monolithic carrier has a thickness of 5 to 100 &mgr;m and the palladium/alumina (Pd/Al2O3) weight ratio in the catalyst layer is 0.03 to 0.30. This catalyst is a Pd-only catalyst improved in hydrocarbon purifiability during the cold start of engine.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: August 5, 2003
    Assignee: NGK Insulators, Ltd.
    Inventors: Naomi Noda, Yukinari Shibagaki, Junichi Suzuki