公开(公告)号：US20230330603A1

公开(公告)日：2023-10-19

申请号：US18338493

申请日：2023-06-21

Applicant: NGK INSULATORS, LTD.

Inventor： Makoto MIYAHARA

IPC: B01D69/02 ,  B01D69/10 ,  B01D71/02 ,  B01D69/04 ,  B01D53/22 ,  B01J20/28 ,  B01J20/32 ,  B01J20/30 ,  B01J20/10 ,  B01J20/08

CPC classification number: B01D69/02 ,  B01D69/108 ,  B01D71/0281 ,  B01D69/105 ,  B01D69/04 ,  B01D53/228 ,  B01J20/28035 ,  B01J20/28004 ,  B01J20/3223 ,  B01J20/3204 ,  B01J20/3042 ,  B01J20/103 ,  B01J20/08 ,  B01D2325/04 ,  B01D2325/06 ,  B01D2325/0231 ,  B01D2323/06 ,  B01D2257/504

Abstract: A separation membrane complex includes a porous support, a dense part covering one surface of the support from a boundary position toward one side in a predetermined direction on the surface, and a separation membrane covering the surface from the boundary position toward the other side and covering the dense part in the vicinity of the boundary position. In a case where, in a cross section, within a specified range from the boundary position toward the one side in the predetermined direction up to 30 μm, a maximum angle among angles formed of the surface and lines connecting respective positions on a surface of the dense part on a side of the separation membrane and the boundary position is acquired as an evaluation angle, a maximum value of four evaluation angles at four measurement positions is not smaller than 5 degrees and not larger than 45 degrees.

公开(公告)号：US11791796B2

公开(公告)日：2023-10-17

申请号：US17356864

申请日：2021-06-24

Applicant: NGK INSULATORS, LTD.

Inventor： Takahiro Yamadera ,  Saki Nakayama ,  Yuji Hori

IPC: H03H9/02 ,  H03H9/25

CPC classification number: H03H9/02574 ,  H03H9/02559 ,  H03H9/25

Abstract: A bonded body includes a supporting substrate; a piezoelectric material substrate composed of a material selected from the group consisting of lithium niobate, lithium tantalate and lithium niobate-lithium tantalate; and a bonding layer bonding the supporting substrate and piezoelectric material substrate and contacting a main surface of the piezoelectric material substrate. At least one of a bonding surface of the supporting substrate and a bonding surface of the piezoelectric material substrate, as measured by spectral ellipsometry with Δ being assigned to a difference of phases of p-polarized light and s-polarized light of a reflected light, has a difference of the maximum and minimum values of the difference Δ of the phases in a wavelength range of 400 nm to 760 nm of 70° or lower.

公开(公告)号：US20230324329A1

公开(公告)日：2023-10-12

申请号：US18185487

申请日：2023-03-17

Applicant: NGK INSULATORS, LTD.

Inventor： Yusuke WATANABE ,  Taku OKAMOTO

IPC: G01N27/407 ,  G01N27/41 ,  G01N33/00

CPC classification number: G01N27/4078 ,  G01N27/41 ,  G01N33/0037

Abstract: A casing of a gas sensor having a reference gas space therein includes: an outer tube into which an end portion of a sensor element protrudes; and a seal member fit into an end portion of the outer tube to seal the reference gas space, the sensor element includes: a first electrode lead portion including a first electrode lead to electrically connect an outside and at least one inner electrode and a first lead insulating layer covering the first electrode lead; and a second electrode lead portion including a second electrode lead that can electrically connect the outside and a measurement electrode and a second lead insulating layer covering the second electrode lead, and A/B

公开(公告)号：US20230324327A1

公开(公告)日：2023-10-12

申请号：US18159830

申请日：2023-01-26

Applicant: NGK INSULATORS, LTD.

Inventor： Yusuke WATANABE ,  Taku OKAMOTO

IPC: G01N33/00 ,  G01N27/407 ,  G01N27/406 ,  G01N27/41

CPC classification number: G01N27/4065 ,  G01N27/4078 ,  G01N27/41 ,  G01N33/0037

Abstract: A controller of a gas sensor includes: a concentration identification part identifying a concentration of a predetermined gas component based on a measurement pump current flowing between a measurement electrode and an out-of-space pump electrode in accordance with the concentration of the predetermined gas component due to application of a predetermined pump voltage; and a correction processing part correcting the concentration of the predetermined gas component identified by the concentration identification part, the correction processing part corrects the concentration of the predetermined gas component based on a correlation identified in advance between an offset current value as a magnitude of the measurement pump current when a measurement gas not containing the predetermined gas component flows or a normalized value of the offset current value and output fluctuations of the measurement pump current at startup of the gas sensor.

公开(公告)号：US20230314365A1

公开(公告)日：2023-10-05

申请号：US18187041

申请日：2023-03-21

Applicant: NGK INSULATORS, LTD.

Inventor： Shintaro MAKI ,  Kota KATAGIRI ,  Kohei YAITA ,  Yuya SEIKE

IPC: G01N27/407 ,  G01M15/10 ,  G01N27/406

CPC classification number: G01N27/4078 ,  G01M15/102 ,  G01N27/4062

Abstract: A gas sensor includes: a sensor element including a sensing part on a side of one end portion thereof; a casing; and a connector disposed in the casing to electrically connect the sensor element to an outside, wherein the casing includes: an outer tube including a main portion in which a reference gas is included and a sealing portion being an end portion having a smaller diameter than the main portion, another end portion of the sensor element protruding to the main portion, a rubber seal member fitted into the sealing portion to seal the outer tube, and a spacer intervening between the seal member and the connector in the outer tube. The spacer includes a concave portion in an end surface on a side having contact with the connector, and has contact with the connector in the end surface except for the concave portion.

公开(公告)号：US20230313721A1

公开(公告)日：2023-10-05

申请号：US18162748

申请日：2023-02-01

Applicant: NGK Insulators, Ltd.

Inventor： Mako HATTORI

IPC: F01N3/20 ,  F01N3/28 ,  B01J35/04 ,  B01D53/32 ,  B01D53/94 ,  B01J27/224

CPC classification number: F01N3/2026 ,  F01N3/2828 ,  B01J35/04 ,  B01D53/32 ,  B01D53/945 ,  B01J27/224

Abstract: A honeycomb structure including an electrically conductive honeycomb structure portion, comprising an outer peripheral wall, and partition walls disposed inside the outer peripheral wall and partitioning a plurality of cells forming flow paths from one end surface to the other end surface; and a pair of electrode layers provided on an outer surface of the outer peripheral wall so as to face each other across a central axis of the honeycomb structure portion; wherein a coefficient of linear expansion of the honeycomb structure portion measured according to JIS R1618:2002 when temperature is changed from 40° C. to 300 ° C. is 4.1×10−6/° C. or more, and the coefficient of linear expansion of the honeycomb structure portion measured according to JIS R1618:2002 when the temperature is changed from 300 ° C. to 800 ° C. is 4.2×10−6/° C. or more and 4.8×10−6/° C. or less.

公开(公告)号：US20230311398A1

公开(公告)日：2023-10-05

申请号：US18167241

申请日：2023-02-10

Applicant: NGK Insulators, Ltd.

Inventor： Yasunori YAMAZAKI ,  Kazuya KAGEYAMA ,  Yusuke HAYAKAWA

IPC: B29C48/11 ,  B29D99/00 ,  B29C48/92

CPC classification number: B29C48/11 ,  B29D99/0089 ,  B29C48/92 ,  B29C2948/92666 ,  B29L2031/608

Abstract: A method for manufacturing a cylindrical honeycomb fired body including: preparing a cylindrical honeycomb formed body; obtaining a cylindrical honeycomb dried body by drying the cylindrical honeycomb formed body; calculating predetermined parameters (EAVE1, EAVE2, EAVE3 and EAVE4) from average values of distance between a center of gravity position O and an outer peripheral contour in a plurality of predetermined angle ranges; specifying a minimum value of the predetermined parameters; obtaining a cylindrical honeycomb fired body by placing the cylindrical honeycomb dried body on a shelf plate and firing it while passing it through a continuous firing furnace, such that the direction in which the cells of the cylindrical honeycomb dried body extend vertically, and a particular location on the outer peripheral side surface determined according to the minimum value is positioned at the front.

公开(公告)号：US20230311110A1

公开(公告)日：2023-10-05

申请号：US18166028

申请日：2023-02-08

Applicant: NGK Insulators, Ltd.

Inventor： Taro OSADA

IPC: B01J35/04 ,  B01J27/224 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28 ,  F01N3/20

CPC classification number: B01J35/04 ,  B01J27/224 ,  B01J35/0033 ,  B01D53/94 ,  F01N3/2803 ,  F01N3/2026 ,  B01D2255/9155 ,  B01D2258/01 ,  B01D2259/4566 ,  F01N2330/30

Abstract: A honeycomb structure including a honeycomb structure portion made of ceramics having an outer peripheral wall and partition walls disposed inside the outer peripheral wall and partitioning a plurality of cells; and a pair of electrode layers provided on an outer surface of the outer peripheral wall; wherein in a cross-section orthogonal to a direction in which the cells extend, assuming a coordinate value of a center of gravity O is 0, and a coordinate value of an inner peripheral surface of the outer peripheral wall is 1.00 R, an average value P1A of a porosity (%) of the partition walls in a range of coordinate values of 0 to 0.50 R and an average value P2A of a porosity (%) of the partition walls in a range of coordinate values of 0.50 R to 1.00 R satisfy a relationship of 1

公开(公告)号：US20230309197A1

公开(公告)日：2023-09-28

申请号：US18056326

申请日：2022-11-17

Applicant: NGK Insulators, Ltd.

Inventor： Yukio MIYAIRI ,  Masaaki MASUDA ,  Koji KUZUTANI ,  Shinzou HAYASHI

IPC: H05B3/28

CPC classification number: H05B3/283

Abstract: A heater includes: a first cordierite substrate; a glass portion provided on the first cordierite substrate; and an electrically heating portion embedded in the glass portion, wherein the glass portion comprises MgO, Al2O3 and SiO2.

公开(公告)号：US20230304963A1

公开(公告)日：2023-09-28

申请号：US18138170

申请日：2023-04-24

Applicant: NGK INSULATORS, LTD.

Inventor： Yusuke WATANABE ,  Shotaro NIIZUMA ,  Toshihiro HIRAKAWA ,  Hayami AOTA

IPC: G01N27/407 ,  G01N27/409 ,  G01N27/41

CPC classification number: G01N27/4073 ,  G01N27/4071 ,  G01N27/409 ,  G01N27/41 ,  G01N33/0037

Abstract: A gas sensor includes: a laminate formed of a plurality of layers including at least one layer of a solid electrolyte; a reference gas chamber formed in the laminate and containing a reference gas; and a reference electrode partially exposed in the reference gas chamber. A portion which is not exposed in the reference gas chamber, of the reference electrode is sandwiched between, among the layers, a first layer and a second layer adjacent to the first layer. When an area of the portion sandwiched between the first layer and the second layer, of the reference electrode is defined as a first area, and an area of a portion exposed in the reference gas chamber, of the reference electrode is defined as a second area, a ratio of the first area to the second area is 0.3 or more.