Patents by Inventor Yoshinori Ishida

Yoshinori Ishida 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: 10760563
    Abstract: A refrigerant compressor reserves lubricating oil with a viscosity of VG2 to VG100 in a sealed container, and accommodates therein an electric component and a compression component which is driven by the electric component and compresses a refrigerant. The compression component includes at least one slide member comprising a base material 171 made of an iron-based material and an oxide coating film 170 provided on a surface of the base material 171. The oxide coating film 170 includes: a portion containing diiron trioxide (Fe2O3), in a region which is closer to an outermost surface of the oxide coating film; and a silicon containing portion containing silicon (Si) which is more in quantity than silicon (Si) of the base material 171, in a region which is closer to the base material 171.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: September 1, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Ishida, Shingo Oyagi, Hiroyuki Fukuhara, Hirotaka Kawabata
  • Publication number: 20200270541
    Abstract: An oxide film (170) is formed on a surface of a base material (175) that is a sintered body constituted by an iron-based material. The oxide film (170) includes a first layer (171), a second layer (172), and a third layer (173). The first layer (171) is located on an outermost surface and is constituted by at least fine crystals. The second layer (172) is located under the first layer (171) and contains columnar structures. The third layer (173) contains columnar structures and is provided on the second layer (172) through an interface (174) so as to be located close to the base material (175). The first layer (171) includes a dense layer (171a). The oxide film (170) can exhibit satisfactory abrasion resistance.
    Type: Application
    Filed: November 27, 2017
    Publication date: August 27, 2020
    Inventors: Shingo OYAGI, Yoshinori ISHIDA, Hirotaka KAWABATA, Hiroto HAYASHI
  • Patent number: 10730294
    Abstract: A liquid-discharge-head substrate includes a first covering portion covering a first heating resistance element and having electrical conductivity, a second covering portion covering a second heating resistance element and having electrical conductivity, a fuse, and a common wiring line for electrically connecting the first and second covering portions. The common wiring line is electrically connected with the first covering portion via the fuse. The common wiring line and the fuse each have a multilayer structure including a stack of a plurality of conductive layers including a first conductive layer and a second conductive layer that is less oxidizable than the first conductive layer.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: August 4, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tsubasa Funabashi, Takahiro Matsui, Yoshinori Misumi, Maki Kato, Yuzuru Ishida
  • Patent number: 10710361
    Abstract: A liquid discharge head substrate including a discharge opening through which a liquid is discharged, a base that includes a surface in which a heat generating element that generates heat to discharge the liquid through the discharge opening is provided, a first electrode that covers the heat generating element, a flow passage through which the liquid flows from a supply port that supplies the liquid, through the surface of the first electrode, and towards a collection port that collects the liquid, and a second electrode provided inside the flow passage, the second electrode together with the first electrode forming an electric field in the liquid, in which the second electrode is provided downstream of the first electrode in a flow direction of the liquid flowing towards the collection port from the supply port.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: July 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Misumi, Maki Kato, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Patent number: 10704541
    Abstract: A slide member of the present invention is used in a slide unit which is included in a refrigerant compressor for compressing a refrigerant and provided inside a sealed container which reserves lubricating oil therein. The slide member is provided with an oxide coating film on a surface of a base material. The oxide coating film is configured such that (1) when the base material comprises an iron based material, the oxide coating film has a three-layer structure including a first layer comprising Fe2O3, a second layer comprising Fe3O4, and a third layer comprising FeO in this order from an outermost surface, (2) the oxide coating film has a dense structure having minute concave/convex portions with a height difference which falls within a range of 0.01 ?m to 0.1 ?m, or (3) when the base material comprises the iron based material, the oxide coating film has a three-layer structure in which the three layers comprise the iron oxides and are different in hardness.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: July 7, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshinori Ishida, Hirotaka Kawabata, Hiroyuki Fukuhara, Yuichiro Kume, Yoshiyuki Futagami
  • Patent number: 10675866
    Abstract: A liquid discharge head substrate including a discharge opening through which a liquid is discharged, a base that includes a surface in which a heat generating element that generates heat to discharge the liquid through the discharge opening is provided, a first electrode that covers the heat generating element, a flow passage through which the liquid flows from a supply port that supplies the liquid, through the surface of the first electrode, and towards a collection port that collects the liquid, and a second electrode provided inside the flow passage, the second electrode together with the first electrode forming an electric field in the liquid, in which the second electrode is provided downstream of the first electrode in a flow direction of the liquid flowing towards the collection port from the supply port.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: June 9, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Misumi, Maki Kato, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Patent number: 10632748
    Abstract: A liquid ejection head includes: a substrate for the liquid ejection head that includes a heating resistance element, a covering portion that covers the heating resistance element, and a fuse part that electrically connects the covering portion and a common wiring to each other; and a flow path forming member. The flow path forming member is provided with a through-opening or a concave portion that is concave from a surface of the flow path forming member on a side of the substrate for the liquid ejection head, at a position that overlaps at least a part of the fuse part.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: April 28, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Maki Kato, Yoshinori Misumi, Takahiro Matsui, Yuzuru Ishida
  • Publication number: 20200114643
    Abstract: Provided are a liquid ejection apparatus, an ejection control method, and a liquid ejection head capable of suppressing shortening of the life of a liquid ejection head and maintaining stable ejection operation. For this purpose, voltage is applied to upper electrodes and counter electrodes so as to make the voltage at the upper electrodes lower than the voltage at the counter electrodes before heat generating resistive elements are driven, and voltage is applied to the upper electrodes and the counter electrodes so as to make the voltage at the upper electrodes higher than the voltage at the counter electrodes at the same time as or after the start of driving of the heat generating resistive elements.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 16, 2020
    Inventors: Maki Kato, Yoshinori Misumi, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Publication number: 20200086633
    Abstract: A liquid discharge apparatus comprises: a plurality of anti-cavitation layers formed to cover heat generating elements at positions where the anti-cavitation layers contact the liquid; a monitoring unit that detects a current flowing through the anti-cavitation layers; a switching unit that switches whether to apply, to the heat generating elements, and a voltage for driving the heat generating elements, wherein the switching unit includes a plurality of switching units, and if the monitoring unit detects that the current larger than the predetermined value has flowed through the anti-cavitation layer while the voltage is applied to the heat generating elements, the control unit sequentially switches the plurality of switching units, and specifies the heat generating element corresponding to the anti-cavitation layer through which the current has flowed, among the heat generating elements.
    Type: Application
    Filed: September 13, 2019
    Publication date: March 19, 2020
    Inventors: Yuzuru Ishida, Maki Kato, Yoshinori Misumi, Nobuyuki Hirayama
  • Publication number: 20200056604
    Abstract: A refrigerant compressor includes: an electric component (106); a compression component (107) driven by the electric component to compress a refrigerant; and a sealed container (101) accommodating the electric component and the compression component. The compression component includes: a shaft part (109, 110) rotated by the electric component; and a bearing part (114, 119) slidingly contacting the shaft part such that the shaft part is rotatable. A film (160) having hardness equal to or more than hardness of a sliding surface of the bearing part is provided on a sliding surface of the shaft part. Surface roughness of the sliding surface of the bearing part is smaller than surface roughness of the sliding surface of the shaft part.
    Type: Application
    Filed: November 16, 2017
    Publication date: February 20, 2020
    Inventors: Noboru IIDA, Yoshinori ISHIDA, Ko INAGAKI
  • Publication number: 20200056816
    Abstract: The present invention includes: an electric component; a compression component driven by the electric component to compress a refrigerant; and a sealed container accommodating the electric component and the compression component. The compression component includes: a shaft part rotated by the electric component; and a bearing part slidingly contacting the shaft part such that the shaft part is rotatable. A film having hardness equal to or more than hardness of a sliding surface of the bearing part is provided on a sliding surface of the shaft part. The sliding surface of the bearing part includes a curved-surface portion having an inner diameter that continuously increases in a curved shape toward an end of the bearing part in a center axis direction of the bearing part, or the sliding surface of the shaft part includes a curved-surface portion having an outer diameter that continuously decreases in a curved shape toward an end of the shaft part in a center axis direction of the shaft part.
    Type: Application
    Filed: November 16, 2017
    Publication date: February 20, 2020
    Inventors: Yoshinori ISHIDA, Noboru IIDA, Ko INAGAKI, Hiroyuki KAWANO
  • Patent number: 10538085
    Abstract: Influence of transform of quality to an entire liquid discharge head is suppressed when a heat resistor and a covering portion are electrically connected to each other. To address this problem, a liquid discharge head substrate includes fuse portions for respective heat resistor arrays.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: January 21, 2020
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshinori Misumi, Yuzuru Ishida, Maki Kato, Takahiro Matsui
  • Publication number: 20190389213
    Abstract: In a layer including print elements and a layer below the layer including the print elements in a lamination direction of a print element substrate, the print elements and drive circuits are arranged point-symmetrically about the center of the substrate viewed from a side where discharge ports that allow the liquid to be discharged are open, and in an upper layer over the layer including the print elements in the lamination direction, functional elements are arranged in a direction of liquid flow in which the liquid flows from supply ports to collection ports while passing above the print elements.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 26, 2019
    Inventors: Ryoji Oohashi, Yoshinori Misumi, Yuzuru Ishida, Tsubasa Funabashi, Maki Kato
  • Publication number: 20190330747
    Abstract: A refrigerant compressor includes: an electric component; and a compression component driven by the electric component to compress a refrigerant. At least one sliding member constituting the compression component is made of a base material (185) that is an iron-based material. An abrasion resistance film (180) including a surface layer constituted by at least fine crystals is formed on a sliding surface of the sliding member. The surface layer (181) includes an A portion in which a component contained most is diiron trioxide (Fe2O3). The A portion exists within a range of at least 0.3 ?m or less from an outermost surface of the sliding surface. The abrasion resistance film (180) may include at least one intermediate layer (182 to 184) located between the surface layer (181) and the base material (185). With this, self-abrasion resistance of the sliding member can be improved, so that the refrigerant compressor having excellent reliability and efficiency can be obtained.
    Type: Application
    Filed: November 27, 2017
    Publication date: October 31, 2019
    Inventors: Yoshinori ISHIDA, Shingo OYAGI
  • Publication number: 20190329549
    Abstract: A liquid ejection head substrate including a base including a surface having a first and second heat generation elements, a conductive first covering portion, a conductive second covering portion, an insulating layer disposed between the first heat generation element and the first covering portion, and between the second heat generation element and the second covering portion, a fuse portion, first wiring electrically connected to the first covering portion through the fuse portion, the first wiring electrically connecting the first covering portion to the second covering portion, a terminal electrically connected to the first covering portion and the second covering portion through the first wiring, second wiring, and electric connection portions provided between the fuse portion and the terminal in a current path passing through the first wiring, the electric connection portions parallelly connecting the first and second wiring to each other.
    Type: Application
    Filed: April 12, 2019
    Publication date: October 31, 2019
    Inventors: Yuzuru Ishida, Maki Kato, Yoshinori Misumi, Tsubasa Funabashi, Takahiro Matsui
  • Patent number: 10421272
    Abstract: A control method of a liquid ejection head, in which the liquid ejection head having first and second heat generating resistors that generate thermal energy for ejecting liquid, includes first covering portion covers the first heat generating resistor. A second covering portion is electrically connected to the first covering portion and covering the second heat generating resistor. An insulating layer is provided between the first heat generating resistor and the first covering portion and between the second heat generating resistor and the second covering portion. Surface potentials are set of the first and second covering portions to be equal to or less than a ground potential in a state where drive voltage is not applied to the first and second heat generating resistors, is accomplished in accordance with application of drive voltage to at least either the first heat generating resistor or the second heat generating resistor.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: September 24, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuzuru Ishida, Yoshinori Misumi, Maki Kato, Takeru Yasuda, Norihiro Yoshinari, Takahiro Matsui
  • Publication number: 20190285063
    Abstract: Inside a sealed container (101) of a refrigerant compressor (100), lubricating oil (103) having a kinematic viscosity at 40° C. of 0.1 mm2/S to 5.1 mm2/S is stored, and an electric element (106) and a compression element (107) are accommodated. The compression element (107) is provided with, as a shaft part, a crankshaft (108) comprising a main shaft (109) and an eccentric shaft (110), and as bearing parts, a main bearing (114) that axially supports the main shaft (109) and an eccentric bearing (119) that axially supports the eccentric shaft (110). At least one surface of the main shaft (109) and the eccentric shaft (110) is subjected to a surface treatment, e.g., formation of an oxide film, having a hardness equal to or greater than that of a bearing part (the main bearing (114) or the eccentric bearing (119)). Satisfactory reliability in sliding parts can thereby be achieved even if lubricating oil having lower viscosity is used.
    Type: Application
    Filed: November 28, 2017
    Publication date: September 19, 2019
    Applicant: Panasonic Appliances Refrigeration Devices Singapore
    Inventors: Yasushi HAYASHI, Hirotaka KAWABATA, Yoshinori ISHIDA, Shingo OYAGI, Terumasa IDE, Akio YAGI, Hironari AKASHI, Hiroto HAYASHI, Kazuhiro YOKOTA, Hiroki TORIMASU
  • Publication number: 20190270673
    Abstract: [Problem] To provide aggregate for ready-mixed concrete that achieves an improvement in dispersibility. [Solution] An aggregate surface treatment method of the present invention is designed to perform surface treatment on aggregate for ready-mixed concrete by bringing fine bubble water containing fine bubbles into contact with the aggregate. By doing so, the aggregate surface treatment method of this invention is able to improve the dispersibility of the aggregate.
    Type: Application
    Filed: October 20, 2017
    Publication date: September 5, 2019
    Applicant: Tech Corporation Co., Ltd.
    Inventors: Yoshinori Nakamoto, Mituhito Ishida, Kiyohito Yukimoto, Masato Hada
  • Publication number: 20190255848
    Abstract: The liquid discharge head substrate includes a first covering portion that covers the first heat generation element and that has conductivity, a second covering portion that covers the second heat generation element and that has conductivity, an insulative layer disposed between the first heat generation element and the first covering portion and between the second heat generation element and the second covering portion, a fuse portion provided on the substrate on a side on which the first covering portion is provided, common wiring for electrically coupling the first covering portion and the second covering portion, the common wiring coupled with the first covering portion via the fuse portion, and a cover layer including at least silicon and carbon and covering the fuse portion.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 22, 2019
    Inventors: Maki Kato, Yoshinori Misumi, Yuzuru Ishida, Tsubasa Funabashi, Takahiro Matsui
  • Publication number: 20190255844
    Abstract: A liquid-discharge-head substrate includes a first covering portion covering a first heating resistance element and having electrical conductivity, a second covering portion covering a second heating resistance element and having electrical conductivity, a fuse, and a common wiring line for electrically connecting the first and second covering portions. The common wiring line is electrically connected with the first covering portion via the fuse. The common wiring line and the fuse each have a multilayer structure including a stack of a plurality of conductive layers including a first conductive layer and a second conductive layer that is less oxidizable than the first conductive layer.
    Type: Application
    Filed: February 8, 2019
    Publication date: August 22, 2019
    Inventors: Tsubasa Funabashi, Takahiro Matsui, Yoshinori Misumi, Maki Kato, Yuzuru Ishida