Patents by Inventor Katsuya Ishii

Katsuya Ishii 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: 10399355
    Abstract: A liquid discharge head includes a plurality of nozzles to discharge a liquid, a plurality of individual chambers communicating with the plurality of nozzles, a plurality of discharge channels communicating with the plurality of individual chambers, a plurality of supply-side common chambers connected to the plurality of individual chambers, and a plurality of discharge-side common chambers connected to the plurality of discharge channels. The plurality of discharge-side common chamber has a same fluid resistance.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: September 3, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Takayuki Nakai, Toshimichi Odaka, Takakazu Kihira, Takahiro Yoshida, Shiomi Andou, Yukio Otome, Katsuya Ishii
  • Publication number: 20190232384
    Abstract: A coated cutting tool according to the present invention is a coated cutting tool comprising a substrate and a coating layer formed on a surface of the substrate, wherein: the coating layer comprises a lower layer, an intermediate layer formed on a surface of the lower layer, and an upper layer formed on a surface of the intermediate layer; the lower layer is a predetermined Ti compound layer with a predetermined average thickness; the intermediate layer is an ?-type aluminum oxide layer with a predetermined average thickness; the upper layer is a Ti carbonitride layer with a predetermined average thickness; and a texture coefficient of a predetermined plane of each of the ?-type aluminum oxide layer and the Ti carbonitride layer falls within a predetermined range.
    Type: Application
    Filed: December 20, 2018
    Publication date: August 1, 2019
    Applicant: TUNGALOY CORPORATION
    Inventor: Katsuya ISHII
  • Patent number: 10179452
    Abstract: A liquid discharge head includes a plurality of nozzles from which liquid is discharged, a plurality of individual-liquid-chambers communicating with the plurality of nozzles, respectively, a plurality of individual-drainage-channels communicating with the plurality of individual-liquid-chambers, respectively, a drainage-side common-liquid-chamber communicating with each of the plurality of individual-drainage-channels, a filter having filter holes and disposed between the plurality of individual-drainage-channels and the drainage-side common-liquid-chamber, and an intermediate-drainage-channel disposed between the filter and the plurality of individual-drainage-channels. The intermediate-drainage-channel faces the filter and communicates with two or more of the plurality of individual-drainage-channels.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: January 15, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Masami Iwama, Yukio Otome, Takahiro Yoshida, Takakazu Kihira, Takayuki Nakai, Shiomi Andou, Isamu Suzuki, Ryuji Yoshida, Kanshi Abe, Junichi Iwata, Katsuya Ishii, Toshimichi Odaka
  • Publication number: 20180272743
    Abstract: A liquid discharge head includes a plurality of nozzles to discharge a liquid, a plurality of individual chambers communicating with the plurality of nozzles, a plurality of discharge channels communicating with the plurality of individual chambers, a plurality of supply-side common chambers connected to the plurality of individual chambers, and a plurality of discharge-side common chambers connected to the plurality of discharge channels. The plurality of discharge-side common chamber has a same fluid resistance.
    Type: Application
    Filed: January 25, 2018
    Publication date: September 27, 2018
    Inventors: Takayuki Nakai, Toshimichi Odaka, Takakazu Kihira, Takahiro Yoshida, Shiomi Andou, Yukio Otome, Katsuya Ishii
  • Patent number: 7726024
    Abstract: In a heat exchanger, a core portion includes a plurality of plate fins each shaped like a flat plate and a plurality of tubes in which a fluid flows and each of which is inserted into each of the plate fins to be mechanically bonded thereto. Further, an end portion in a longitudinal direction of each of the tubes is bonded to a header plate which constructs a part of a header tank. The manufacturing method for this heat exchanger includes inserting the tube into the plate fins; expanding the tube to attach the plate fins; connect the tube into the header plate; and vibrate the tube with respect to the plate while applying a load to the tube in the direction of the header plate.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: June 1, 2010
    Assignee: Denso Corporation
    Inventors: Katsuya Ishii, Hirokazu Hashimoto, Yuuichi Aoki, Kazuo Itoh
  • Publication number: 20070114268
    Abstract: In a heat exchanger, a core portion includes a plurality of plate fins each shaped like a flat plate and a plurality of tubes in which a fluid flows and each of which is inserted into each of the plate fins to be mechanically bonded thereto. Further, an end portion in a longitudinal direction of each of the tubes is bonded to a header plate which constructs a part of a header tank. In this heat exchanger, the tube is bonded to the header plate in a solid phase. Therefore, the plate fins are mechanically bonded to the tube and the end portion of the tube in the longitudinal direction of the tube can be bonded to the header plate without a furnace of a high temperature.
    Type: Application
    Filed: December 12, 2006
    Publication date: May 24, 2007
    Inventors: Katsuya Ishii, Hirokazu Hashimoto, Yuuichi Aoki, Kazuo Itoh
  • Patent number: 6994154
    Abstract: In an adsorber for an adsorption type refrigerator of the present invention, aluminum heat exchangers 120, 130 arranged in a casing 110 are provided with films which do not permit moisture to pass therethrough, such as SiO3 films, anodic oxide coating films and several ppm to a hundred and several tens of ppm of inorganic negative ions such as PO43?, SiO32? are added in the water enclosed in the casing.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: February 7, 2006
    Assignee: DENSO Corporation
    Inventors: Hisao Nagashima, Junji Otobe, Katsuya Ishii
  • Publication number: 20050006079
    Abstract: In a heat exchanger, a core portion includes a plurality of plate fins each shaped like a flat plate and a plurality of tubes in which a fluid flows and each of which is inserted into each of the plate fins to be mechanically bonded thereto. Further, an end portion in a longitudinal direction of each of the tubes is bonded to a header plate which constructs a part of a header tank. In this heat exchanger, the tube is bonded to the header plate in a solid phase. Therefore, the plate fins are mechanically bonded to the tube and the end portion of the tube in the longitudinal direction of the tube can be bonded to the header plate without a furnace of a high temperature.
    Type: Application
    Filed: May 28, 2004
    Publication date: January 13, 2005
    Inventors: Katsuya Ishii, Hirokazu Hashimoto, Yuuichi Aoki, Kazuo Itoh
  • Publication number: 20040200603
    Abstract: In an adsorber for an adsorption type refrigerator of the present invention, aluminum heat exchangers 120, 130 arranged in a casing 110 are provided with films which do not permit moisture to pass therethrough, such as SiO3 films, anodic oxide coating films and several ppm to a hundred and several tens of ppm of inorganic negative ions such as PO43−, SiO32− are added in the water enclosed in the casing.
    Type: Application
    Filed: April 6, 2004
    Publication date: October 14, 2004
    Inventors: Hisao Nagashima, Junji Otobe, Katsuya Ishii
  • Patent number: 6619071
    Abstract: In an adsorption-type refrigerating apparatus, an adsorber includes therein an adsorbent having a temperature-dependent characteristic in which an amount adsorbed in an adsorption step is larger than an amount adsorbed in a desorption step, even when a vapor pressure rate in the adsorption step is equal to or lower than a vapor pressure rate in the desorption step. Therefore, even when the cooling temperature of outside air for cooling the adsorbent increases, a sufficient cooling capacity can be obtained. In addition, a difference between the amount adsorbed in the adsorption step and the amount adsorbed in the desorption step can be made larger.
    Type: Grant
    Filed: June 6, 2002
    Date of Patent: September 16, 2003
    Assignee: Denso Corporation
    Inventors: Hideaki Sato, Katsuya Ishii, Atsushi Kosaka, Shigeo Numazawa, Seiji Inoue, Kouji Inagaki, Kazuhisa Yano, Norihiko Setoyama, Yoshiaki Fukuyama
  • Patent number: 6615603
    Abstract: Heat is absorbed from a first heat emitter and a second heat emitter is cooled by an adsorption type refrigerator operating by that absorbed heat. When the amount of emission of heat of the first heat emitter exceeds a predetermined amount of heat, the heat absorbed in the heat medium by a first heat collector is discharged to the outside air by an outdoor unit without being supplied to the adsorbent of the refrigerator. On the other hand, when the amount of emission of heat of the first heat emitter falls below a predetermined amount, the heat medium which had been supplied to a first heat exchanger for heating the adsorbent is switched to return to the first heat collector without flowing to the outdoor unit.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: September 9, 2003
    Assignee: Denso Corporation
    Inventors: Masaaki Tanaka, Shigeo Numazawa, Katsuya Ishii, Hideaki Sato, Shin Honda, Yoshiyuki Okamoto, Junichiro Kanamori, Tadayoshi Terao
  • Publication number: 20030005721
    Abstract: In an adsorption-type refrigerating apparatus, an adsorber includes therein an adsorbent having a temperature-dependent characteristic in which an amount adsorbed in an adsorption step is larger than an amount adsorbed in a desorption step, even when a vapor pressure rate in the adsorption step is equal to or lower than a vapor pressure rate in the desorption step. Therefore, even when the cooling temperature of outside air for cooling the adsorbent increases, a sufficient cooling capacity can be obtained. In addition, a difference between the amount adsorbed in the adsorption step and the amount adsorbed in the desorption step can be made larger.
    Type: Application
    Filed: June 6, 2002
    Publication date: January 9, 2003
    Inventors: Hideaki Sato, Katsuya Ishii, Atsushi Kosaka, Shigeo Numazawa, Seiji Inoue, Kouji Inagaki, Kazuhisa Yano, Norihiko Setoyama, Yoshiaki Fukushima
  • Patent number: 6474099
    Abstract: The present invention provides an adsorption-type cooling apparatus comprising first, second, third, and fourth adsorption devices filled with a coolant and contain adsorbents which adsorb evaporated coolant and desorb the adsorbed coolant during heating. Adsorption cores provide heat exchange between the adsorbents and a heat medium, and evaporation and condensation cores provide heat exchange between heating medium and the coolant. A cooling device in which heating medium cooled in the evaporation and condensation cores circulates and cools the object of cooling. A heating means supplies a high-temperature heat medium to the first-fourth adsorption devices. A cooling means supplies a low-temperature heat medium which has a temperature lower than that of the high-temperature heat medium to the first-fourth adsorption devices. Also, a switching control means is provided which switches between multiple states.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: November 5, 2002
    Assignee: Denso Corporation
    Inventors: Masaaki Tanaka, Satoshi Inoue, Hideaki Sato, Katsuya Ishii, Hisao Nagashima, Shin Honda, Takahisa Suzuki
  • Publication number: 20020092315
    Abstract: Heat is absorbed from a first heat emitter and a second heat emitter is cooled by an adsorption type refrigerator operating by that absorbed heat. When the amount of emission of heat of the first heat emitter exceeds a predetermined amount of heat, the heat absorbed in the heat medium by a first heat collector is discharged to the outside air by an outdoor unit without being supplied to the adsorbent of the refrigerator. On the other hand, when the amount of emission of heat of the first heat emitter falls below a predetermined amount, the heat medium which had been supplied to a first heat exchanger for heating the adsorbent is switched to return to the first heat collector without flowing to the outdoor unit.
    Type: Application
    Filed: February 25, 2002
    Publication date: July 18, 2002
    Inventors: Masaaki Tanaka, Shigeo Numazawa, Katsuya Ishii, Hideaki Sato, Shin Honda, Yoshiyuki Okamoto, Junichiro Kanamori, Tadayoshi Terao
  • Publication number: 20020035849
    Abstract: The present invention provides an adsorption-type cooling apparatus comprising first, second, third, and fourth adsorption devices filled with a coolant and contain adsorbents which adsorb evaporated coolant and desorb the adsorbed coolant during heating. Adsorption cores provide heat exchange between the adsorbents and a heat medium, and evaporation and condensation cores provide heat exchange between heating medium and the coolant. A cooling device in which heating medium cooled in the evaporation and condensation cores circulates and cools the object of cooling. A heating means supplies a high-temperature heat medium to the first-fourth adsorption devices. A cooling means supplies a low-temperature heat medium which has a temperature lower than that of the high-temperature heat medium to the first-fourth adsorption devices. Also, a switching control means is provided which switches between multiple states.
    Type: Application
    Filed: April 2, 2001
    Publication date: March 28, 2002
    Inventors: Masaaki Tanaka, Satoshi Inoue, Kideaki Sato, Katsuya Ishii, Hisao Nagashima, Shin Honda, Takahisa Suzuki
  • Patent number: 6106972
    Abstract: A cooling apparatus communicates through a communicating pipe with an inside space of an airtight casing in which a plurality of battery cells are hermetically held. The cooling apparatus and the inside space of the airtight casing are filled with high boiling point coolant. The coolant absorbs heat developed by the plurality of battery cells in the airtight casing so that it evaporates. The evaporated (gaseous) coolant rises toward the cooling apparatus and is condensed in the cooling apparatus. Then the condensed (liquid) coolant returns to around the battery cells by its self-weight. Accordingly, the battery cells are uniformly and efficiently cooled not to have variation in temperature therein.
    Type: Grant
    Filed: July 1, 1998
    Date of Patent: August 22, 2000
    Assignee: Denso Corporation
    Inventors: Akihisa Kokubo, Katsuya Ishii, Keiichiro Banzai
  • Patent number: 6047770
    Abstract: In an air conditioning apparatus for a vehicle, a water/refrigerant heat exchanger is disposed at a refrigerant discharge side of a compressor of a refrigerant cycle, and a cooling unit for cooling a heat-generating unit with refrigerant having an intermediate pressure of the refrigerant cycle is disposed at a downstream refrigerant side of the water/refrigerant heat exchanger. The air conditioning apparatus includes an evaporator and a hot-water type heater core disposed in an air conditioning duct. In a cooling water circuit, an engine, a radiator and an electrical pump are disposed in addition to the water/refrigerant heat exchanger and the hot-water type heater core. Thus, refrigerant absorbs heat generated in the heat-generating unit, and is heat-exchanged with cooling water in the water/refrigerant heat exchanger after passing through the compressor.
    Type: Grant
    Filed: July 22, 1998
    Date of Patent: April 11, 2000
    Assignee: Denso Corporation
    Inventors: Takahisa Suzuki, Katsuya Ishii, Keiichiro Banzai, Akihisa Kokubo
  • Patent number: 6006532
    Abstract: In a refrigerant cycle system, a gas-liquid separator has a gas-suction pipe for introducing gas refrigerant from the gas-liquid separator to a compressor. The gas-suction pipe has an open end opened in a gas-refrigerant area in the gas-liquid separator, a first suction hole, provided in a liquid-refrigerant area of the gas-liquid separator, for sucking liquid refrigerant containing lubricating oil, and a second suction hole provided in the gas-refrigerant area of the gas-liquid separator. The second suction hole for sucking gas refrigerant is formed in the gas-suction pipe at a downstream refrigerant side of the first suction hole. Therefore, a flow rate of gas refrigerant passing through around the first suction hole in the gas-suction pipe is decreased due to introduction of gas refrigerant by the second suction hole, thereby decreasing quantity of liquid refrigerant sucked from the first suction hole.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: December 28, 1999
    Assignee: Denso Corporation
    Inventors: Takahisa Suzuki, Katsuya Ishii, Kunio Iritani, Satoshi Itoh
  • Patent number: 5878589
    Abstract: The waste heat from a heating part mounted on a vehicle is recovered and extracted by a refrigerant for gas injection so that the heating capacity at a low ambient temperature may be effectively improved while suppressing an increase in the power consumption. At the heating time, the refrigerant is circulated in a closed circuit composed of a compressor, an indoor heat exchanger, a pressure regulator and an outdoor heat exchanger, and the refrigerant, as condensed in the indoor heat exchanger, is regulated to an intermediate pressure by a pressure regulator and introduced into a heat exchanger. In this heat exchanger, the refrigerant extracts the heat from the heating part at the side of the vehicle so that it evaporates. The refrigerant thus having evaporated is introduced through an evaporation pressure regulating valve via a gas injection passage into a gas injection port of the compressor.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: March 9, 1999
    Assignee: Denso Corporation
    Inventors: Masaya Tanaka, Takahisa Suzuki, Kunio Iritani, Katsuya Ishii, Keiichiro Banzai
  • Patent number: 4353224
    Abstract: A refrigerant evaporator in a refrigerating cycle, especially in an automotive air conditioner of the type comprising a flat tube which is provided with refrigerant passages therein and formed to weave up and down, and a plurality of corrugated fin units each of which is interposed between the adjacent upright portions of the flat tube and fixed thereto so as to enhance heat exchange between refrigerant flowing within the flat tube and air flowing horizontally between the upright portions. In the evaporator of the above type, in order to prevent the water condensed over the surfaces of the flat tube and the corrugated fin units from being entrained by air into the compartment of the automobile, the portion of the flat tube on the downstream side of air flow is spaced apart from each corrugated fin unit to provide a non-contact space therebetween so as to force the condensed water to drop through the non-contact space.
    Type: Grant
    Filed: March 26, 1981
    Date of Patent: October 12, 1982
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masayuki Nonogaki, Katsuya Ishii, Nobumasa Hirasawa