262 patents
Utility
Sensor element and gas sensor
9 Jan 24
A sensor element (10) including: a measurement chamber (150); a pump cell (110) including a solid electrolyte (111), an inner electrode (113) exposed to the measurement chamber, and an outer electrode (112), the pump cell being configured to adjust an oxygen concentration in the measurement chamber; a diffusion resistance portion (151); and a detection cell (120) configured to measure a concentration of a specific gas in the measurement target gas after the adjustment of the oxygen concentration.
Hitoshi Furuta, Kentaro Kamada, Akinori Kojima, Satoshi Yamahara, Akihiro Hara
Filed: 20 Apr 20
Utility
Electrode-embedded member and method for manufacturing same, electrostatic chuck, and ceramic heater
9 Jan 24
An electrode-embedded member 1 includes a ceramic-made substrate 2, an electrode 3, a connection member 4 containing at least one of tungsten and molybdenum and embedded in the substrate 2 in a state in which a first principal surface 4a faces the electrode 3 and is electrically connected to the electrode 3, and a hole portion 5 extending from an outer surface of the substrate 2 to a second principal surface 4b of the connection member 4.
Masaki Yabuhana
Filed: 19 Mar 20
Utility
Spark plug
2 Jan 24
Spark plug has center electrode having leg portion extending in an axis direction, brim portion located at rear end side with respect to the leg portion and protruding outwards in a radial direction with respect to the leg portion and connecting portion connecting the leg portion and the brim portion; insulator having penetration hole and supporting the center electrode; and seal member filling the penetration hole and fixing the brim portion and the insulator.
Eiichi Nakai, Masahiro Nishida, Shingo Kozuka
Filed: 10 Sep 20
Utility
Light-emitting apparatus and light-emitting element housing
21 Nov 23
A multilayer wiring substrate includes a first wiring substrate including a plurality of stacked layers made of a thermo setting resin and having a wiring layer formed between each adjacent layer of the layers in a state in contact with the adjacent layers, a second wiring substrate made of a ceramic, and a joining layer disposed between a back surface of the first wiring substrate and a front surface of the second wiring substrate and configured to join the first wiring substrate and the second wiring substrate to each other, wherein at least a surface of the joining layer adjacent to the second wiring substrate is made of a thermo plastic resin.
Shingo Totani
Filed: 1 Sep 21
Utility
Gas sensor
21 Nov 23
A gas sensor including: a sensor element extending in an axial direction; a metal shell surrounding and supporting the sensor element; an exterior tube that is tubular and is mounted to a rear end of the metal shell; a metal terminal including a first end connected to a lead wire and a second end electrically connected to the sensor element; a separator that is tubular and is disposed in the exterior tube and contains the metal terminal and the sensor element; and a holder being in contact with the separator in the axial direction.
Masana Okai, Takehiro Oba, Daisuke Tahira, Masashi Nomura
Filed: 8 Feb 19
Utility
Fluorescent plate, wavelength conversion member, and light source device
24 Oct 23
A fluorescent plate includes a fluorescent phase which emits fluorescence by excitation light, a light-transmitting phase which allows passage of the excitation light, and a plurality of voids surrounded by the fluorescent phase and the light-transmitting phase, wherein, in a cross section of the fluorescent plate including cross sections of the voids, an average ratio of a portion of the circumference of a void, which portion is in contact with the fluorescent phase to the entire circumference of the void, is higher than an area ratio of the area of the fluorescent phase present in the fluorescent plate to the total area of the fluorescent phase and the light-transmitting phase present in the fluorescent plate.
Shohei Takaku, Hiroki Yamauchi, Shinji Ban, Hiroki Takeuchi
Filed: 3 Jun 21
Utility
Holding device and method for manufacturing holding device
10 Oct 23
A holding device includes a ceramic member and a base member joined together via a joining portion.
Makoto Kuribayashi, Masahiro Inoue, Toshimasa Sakakibara
Filed: 8 Jan 19
Utility
Sensor and method for manufacturing same
26 Sep 23
A sensor (1) comprising: a sensor element (10); metal terminals; and a front side separator (90) and a rear side separator (95) to hold the metal terminals, the metal terminals each include a front side metal terminal (30) and a rear side metal terminal (40) respectively held by the front side separator and the rear side separator, a first connection portion (33) is provided on a rear side of the front side metal terminal, a second connection portion (43) is provided on a front side of the rear side metal terminal, and an axis P2 of one of the first and the second connection portion, in all of the plurality of metal terminals, is displaced toward a radially outer side of the sensor element relative to an axis P1 of a counterpart thereof, and the first connection portion and the second connection portion are in contact with each other.
Sunchao Liu, Takehiro Oba
Filed: 6 Aug 20
Utility
Sensor element, gas sensor, and gas sensor unit
19 Sep 23
A sensor element (100) including a measurement chamber (89); a pump cell (83) including a solid electrolyte body (69), an inner electrode (101), and an outer electrode (99); and a reference cell (85).
Yosuke Suzuki, Takumi Yamada, Hitoshi Furuta, Kentaro Kamada
Filed: 16 Sep 20
Utility
Fluorescent plate, wavelength conversion member, and light source device
12 Sep 23
A fluorescent plate including a fluorescent phase which emits fluorescence by excitation light, and a plurality of voids, wherein, in a cross section of the fluorescent plate including cross sections of the voids, voids having an equivalent circle diameter of 0.4 micrometers or greater and 50 micrometers or smaller have a standard deviation in equivalent circle diameter of 1.5 or less.
Shohei Takaku, Hiroki Yamauchi, Shinji Ban, Hiroki Takeuchi
Filed: 3 Jun 21
Utility
Metallic shell for spark plug and spark plug using the same
5 Sep 23
A metallic shell for a spark plug which metallic shell achieves suppressed elution of hexavalent chromium, and a spark plug including the metallic shell.
Takahiro Sanda, Keita Sugihara, Noriyasu Hasegawa, Yohei Kozakai
Filed: 15 Feb 23
Utility
Method for producing ceramic sintered body, and method and device for producing ceramic molded body
15 Aug 23
The present invention is a sintering method of a ceramic for sintering characterized by forming a layer containing a carbon powder on a surface of an article consisting of a ceramic for sintering, and then irradiating with laser a surface of the carbon powder-containing layer of a lamination obtained.
Teiichi Kimura, Satoshi Suehiro
Filed: 19 Mar 21
Utility
Spark plug
1 Aug 23
A spark plug includes a center electrode, a tubular metallic shell which holds the center electrode therein in an insulated state, and a ground electrode which faces a forward end portion of the center electrode.
Kenji Ban, Tatsuya Gozawa
Filed: 19 Nov 20
Utility
Wavelength conversion member, light source device, and method for manufacturing wavelength conversion member
4 Jul 23
A wavelength conversion member includes a ceramic fluorescent body for converting a wavelength of incident light, a heat radiation member for radiating heat of the ceramic fluorescent body to an outside atmosphere, and a solder layer for joining together the ceramic fluorescent body and the heat radiation member.
Yosuke Yatsuya, Ryuichi Arakawa, Toshiyuki Sakurai, Tomoo Tanaka
Filed: 9 Jul 20
Utility
Spark plug
4 Jul 23
A spark plug has an insulator having a through hole formed along an axial direction, a center electrode which is partially inserted into a portion of the through hole on a forward end side in the axial direction, and a glass seal portion which is in contact with the insulator and the center electrode within the through hole, in which the glass seal portion contains glass and an electrically conductive substance.
Seiji Nakano, Takehito Kuno, Kota Yamauchi
Filed: 4 Nov 21
Utility
Spark plug
4 Jul 23
This spark plug includes a cap portion covering a center electrode and an end of a ground electrode from a front side.
Tatsuya Gozawa, Ritsuka Nakagawa
Filed: 27 Aug 20
Utility
Wiring substrate and method of manufacturing the same
23 May 23
A wiring substrate includes a substrate body composed of a plurality of ceramic layers (insulating materials) and having a front surface and a back surface located on opposite sides thereof and having a side surface located between the front surface and the back surface.
Hirotake Fujii, Yutaka Kachi
Filed: 16 Dec 19
Utility
Package with built-in thermoelectric element
23 May 23
A thermoelectric element-containing package according to one aspect of the present disclosure includes a thermoelectric conversion module including: a first substrate having first and second main surfaces; a second substrate having third and fourth main surfaces; and a plurality of thermoelectric elements that are sandwiched between the first and second substrates and arranged along the second main surface and the third main surface.
Masahiro Ogawa, Tetsuya Kato, Takayuki Hachida
Filed: 14 Feb 18
Utility
Spark plug
16 May 23
To prevent a sealant from intruding between a flange and a stepped portion during manufacture of a spark plug and to prevent cracking of an insulator during use of the spark plug, a spark plug includes a center electrode including a flange, an insulator having a through-hole extending in an axial-line direction and holding the center electrode, and a sealant filled in the through-hole to fix the flange and the insulator to each other; the insulator including a stepped portion in which the through-hole reduces a diameter toward a front end side and that supports the flange, and a small-diameter portion that is continuous with a front end side of the stepped portion and in which the diameter of the through-hole is smaller than in the stepped portion; an angle θ1 formed by the stepped portion and a plane perpendicular to the axial line and an angle θ2 formed by the plane perpendicular to the axial line and an opposing surface of the flange opposing the stepped portion satisfies θ1−θ2≥6°, and in a cross section including the axial line, a maximum diameter D1 of the flange and a diameter D2 of the through-hole at a rear end of the small-diameter portion in the axial-line direction satisfy 0.15 mm≤(D1−D2)/2.
Seiji Nakano, Kengo Fujimura, Shota Takaenoki
Filed: 22 Dec 20
Utility
Spark plug
25 Apr 23
The spark plug includes: an insulator having an axial hole extending in an axial direction; a center electrode disposed at a front end in the axial direction of the axial hole and having a front end portion that protrudes from a front side of the axial hole; a tubular metal shell holding the insulator; and a ground electrode having one end portion that is fixed to a through hole provided in the metal shell, the ground electrode having another end portion that forms a discharge gap between the other end portion and the front end portion of the center electrode.
Daisuke Mishima
Filed: 21 May 21