Patents by Inventor Yuichi Furukawa

Yuichi Furukawa 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: 20090139704
    Abstract: A heat radiator 1 includes an insulating substrate 3 whose first side serves as a heat-generating-element-mounting side, and a heat sink 5 fixed to a second side of the insulating substrate 3. A metal layer 7 is formed on a side of the insulating substrate 3 opposite the heat-generating-element-mounting side. A stress relaxation member 4 intervenes between the metal layer 7 of the insulating substrate 3 and the heat sink 5. The stress relaxation member 4 is formed of an aluminum plate 10 having a plurality of through holes 9 formed therein, and the through holes 9 serve as stress-absorbing spaces. The stress relaxation member 4 is brazed to the metal layer 7 of the insulating substrate 3 and to the heat sink 5. This heat radiator 1 is low in material cost and exhibits excellent heat radiation performance.
    Type: Application
    Filed: April 6, 2006
    Publication date: June 4, 2009
    Applicants: Kabushiki Kaisha Toyota Jidoshokki, Showa Denko K.K.
    Inventors: Kota Otoshi, Eiji Kono, Hidehito Kubo, Masahiko Kimbara, Yuichi Furukawa, Shinobu Yamauchi, Ryoichi Hoshino, Nobuhiro Wakabayashi, Shintaro Nakagawa
  • Publication number: 20070209779
    Abstract: A vehicle air-conditioning apparatus in which supercritical refrigerant passing through a refrigerant heat releasing passage of a heat releasing device exchanges heat with refrigerant cooling air introduced from an air introduction surface of a heat releasing device to be cooled, and the cooled refrigerant exchanges heat with air to be introduced into a passenger compartment by an evaporator. Since at least a part of discharge air discharged from an inside of a passenger compartment is introduced from an air introduction surface of the heat releasing device as a ventilation loss utilizing air, ventilation loss utilizing air can be used as a part of refrigerant cooling air. The ventilation loss utilizing air is introduced to the downstream side area of the refrigerant heat releasing passage in an air introduction surface of the heat releasing device.
    Type: Application
    Filed: December 3, 2004
    Publication date: September 13, 2007
    Applicant: Showa Denko K.K.
    Inventors: Etsuo Shinmura, Yuichi Furukawa
  • Publication number: 20060137385
    Abstract: A refrigeration system including a two-stage type compressor having independent low-pressure and high-pressure compressing portions, a heat-releasing device having independent primary and secondary heat-releasing paths, an expansion valve and a cooler. The refrigerant primarily compressed by the low-pressure compressing portion is primarily released in heat by the primary heat-releasing path. The primarily heat-released refrigerant is secondarily compressed by the high-pressure compressing portion. The secondarily compressed refrigerant is secondarily released in heat by the secondary heat-releasing path to thereby obtain a low-temperature and high-pressure refrigerant. The low-temperature and high-pressure refrigerant is decompressed and expanded by an expansion valve and passes through the cooler to absorb the heat in a room air, and then returns to the low-pressure compressing portion of the compressor. In this system, the refrigerant temperature during the heat-releasing procedure can be kept low.
    Type: Application
    Filed: October 24, 2003
    Publication date: June 29, 2006
    Applicant: SHOWA DENKO K.K.
    Inventors: Koichiro Take, Etsuo Shinmura, Yuichi Furukawa
  • Publication number: 20040211551
    Abstract: In the present invention, a header tank 10 includes a header tank main body 11 and a cover plate 20. The header tank main body 11 is provided with a refrigerant inlet passage 12a and a refrigerant outlet passage 12b arranged in parallel, connecting apertures 14a and 14b formed on a tube connecting side 13 and communicating with the passages 12a and 12b, and a communicating aperture communicating with the passages 12a and 12b. The cover plate 20 has insertion apertures 24a and 24b corresponding to the connecting apertures 14a and 14b. The tubes 1a and 1b, the cover plate 20 and the header tank main body 11 are integrally joined in a state in which each end of the tube 1a and 1b is inserted into the insertion aperture 24a and 24b of the cover plate 20 disposed on the tube connecting side 13a of the header tank main body 11 and connected to the connecting apertures 14a and 14b of the header tank main body 11.
    Type: Application
    Filed: March 25, 2004
    Publication date: October 28, 2004
    Inventors: Etsuo Shinmura, Ryoichi Hoshino, Hideo Ohashi, Yuichi Furukawa
  • Patent number: 6247529
    Abstract: A refrigerant tube for a heat exchanger, comprising: a generally flat tube 10 having generally flat upper and lower walls 12/14; a plurality of reinforcing walls 16 connected between the upper and lower walls 12/14, the reinforcing walls extending along and generally parallel with a longitudinal axis A—A of the tube and being spaced apart from one another by a predetermined distance; and a plurality of communication holes 18 distributed along the length of each reinforcing wall 16, thereby defining a plurality of discrete wall portions 20 along each reinforcing wall 16, each of the discrete wall portions 20 being disposed between adjacent communication holes 18 and having an upstream edge 22 and a downstream edge 24 thereof, the communication holes 18 and discrete wall portions 20 having lengths L1 and L2, respectively, as measured along the longitudinal axis A—A, the communication holes 18 being spaced apart along each reinforcing wall 16 by a pitch P.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: June 19, 2001
    Assignee: Visteon Global Technologies, Inc.
    Inventors: Fumio Shimizu, Hiroyasu Shimanuki, Hirohiko Watanabe, Yuichi Furukawa, Yuji Yamamoto, Arif Mujib Khan, Qun Liu, Thaddeus Waskiewicz
  • Patent number: 6164368
    Abstract: A heat sink for use in a portable electronic device for disposing of the heat generated by an electronic component of the device, the heat sink comprising in its entirety a metal clad plate composed of two metal sheets and having a nonbonded portion in a required pattern, the nonbonded portion providing a heat pipe portion formed by outwardly inflating at least one of the two metal sheets of the nonbonded portion to make a hollow portion and enclosing a working liquid in the hollow portion, the metal clad plate having on one surface thereof a mount portion for the electronic component at a region thereof where the heat pipe portion is partly present, the heat pipe portion having a heat receiving portion at the region thereof where the mount portion is present. When a heat-generating electronic component is attached to the mount portion, the working liquid in the heat receiving portion is heated with the heat produced by the component to evaporate.
    Type: Grant
    Filed: June 23, 1999
    Date of Patent: December 26, 2000
    Assignee: Showa Aluminum Corporation
    Inventors: Yuichi Furukawa, Mitsugu Sumitani, Tomio Ito
  • Patent number: 6115252
    Abstract: A heat sink device for use in an electronic device for dissipating into the atmosphere outside a housing of the electronic device the heat generated by an electronic component disposed within the housing. The housing has a peripheral wall formed with a heat removal opening. A heat sink disposed within the housing comprises a metal body having a heat pipe portion, and a radiation fin attached to the body in the vicinity of the heat removal opening and opposed to the opening. The heat-generating electronic component, such as CPU, is held in contact with the metal body at a location away from the fin attached portion thereof.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: September 5, 2000
    Assignee: Showa Aluminum Corporation
    Inventors: Keiichiro Ohta, Yuichi Furukawa
  • Patent number: 5937936
    Abstract: A heat sink for use in a portable electronic device for disposing of the heat generated by an electronic component of the device, the heat sink comprising in its entirety a metal clad plate composed of two metal sheets and having a nonbonded portion in a required pattern, the nonbonded portion providing a heat pipe portion formed by outwardly inflating at least one of the two metal sheets of the nonbonded portion to make a hollow portion and enclosing a working liquid in the hollow portion, the metal clad plate having on one surface thereof a mount portion for the electronic component at a region thereof where the heat pipe portion is partly present, the heat pipe portion having a heat receiving portion at the region thereof where the mount portion is present. When a heat-generating electronic component is attached to the mount portion, the working liquid in the heat receiving portion is heated with the heat produced by the component to evaporate.
    Type: Grant
    Filed: August 29, 1997
    Date of Patent: August 17, 1999
    Assignee: Showa Aluminum Corporation
    Inventors: Yuichi Furukawa, Mitsugu Sumitani, Tomio Ito
  • Patent number: 5599467
    Abstract: An aluminum weldment is produced by resistance-welding aluminum workpieces, and has a nugget formed between the aluminum workpieces which contains more magnesium than the base material of the aluminum workpieces. The nugget contains 5.about.17 wt % of magnesium which forms a solid solution with aluminum.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: February 4, 1997
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Showa Aluminum Corporation
    Inventors: Shinji Okabe, Takashi Iwasa, Takushi Irie, Yuichi Furukawa, Ichiro Iwai
  • Patent number: 5565117
    Abstract: Workpieces of aluminum alloy are resistance-welded while a powdery mixture of magnesium and a metal oxide is being interposed between regions of workpieces of aluminum alloy which are to be joined to each other. The metal oxide may comprise at least one material selected from the group consisting of TiO.sub.2, SiO.sub.2, Cr.sub.2 O.sub.3, MnO.sub.2, Fe.sub.2 O.sub.3, CuO, and Ti.sub.2 O.sub.3 and the powdery mixture may include aluminum powder. The workpieces may be made of aluminum, stainless steel, or the like rather than aluminum alloy.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: October 15, 1996
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Showa Aluminum Corporation
    Inventors: Takashi Iwasa, Shinji Okabe, Takushi Irie, Yuichi Furukawa, Ichiro Iwai
  • Patent number: 5504296
    Abstract: In a method of hot brazing aluminum articles, the steps of: interposing an amount of a flux-containing brazing agent (12) between portions of aluminum articles (11, 11) which are to be adjoined one to another; gripping the portions with a pair of heaters (13); and then activating the heater so that heat conducted therefrom melts the brazing agent (12) to braze the aluminum articles (11), are carried out in this order. The brazing agent (12) is a compacted agent composed of a matrix powder and a flux powder, at a ratio in weight of 99.9:0.1 to 70:30, and the agent has a density corresponding to 90% or more of a theoretical value.
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: April 2, 1996
    Assignee: Showa Aluminum corporation
    Inventors: Shoichi Sato, Ichiro Iwai, Yuichi Furukawa
  • Patent number: 5076351
    Abstract: In a heat pipe container having a working fluid enclosed therein, the container includes a container body in the form of a horizontal straight tube and having an evaporator portion, a heat insulating portion and a condenser portion as arranged from one end of the body to the other end thereof, and an upward hollow projecting portion provided on the condenser portion of the container body.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: December 31, 1991
    Assignee: Showa Aluminum Corporation
    Inventors: Masaaki Munekawa, Chuichi Takahashi, Kaoru Hasegawa, Koichiro Fukui, Yuichi Furukawa
  • Patent number: 4983169
    Abstract: The present invention relates to a catheter for angiography adapted to be used simultaneously with a catheter introducing guide wire and advanced into a blood vessel under the pilot action of the guide wire, and is characterized in that in order to secure smooth and reliable remote controllability (i.e., torque controllability) from the hand side, a high degree of flexibility precisely reflecting the movement of the guide wire and an injecting function for accurately directing a contrast agent into a target artery, the catheter is designed so that, although the catheter has, as a whole, a degree of flexiblity to enable it to follow the movement of the guide wire, its main portion in the region to be introduced into a blood vessel has a higher degree of flexibility than that of its front end portion which is shorter than the main portion.
    Type: Grant
    Filed: March 2, 1989
    Date of Patent: January 8, 1991
    Inventor: Yuichi Furukawa
  • Patent number: 4850975
    Abstract: A catheter introducer for angiography is disclosed which comprises a sheath for inserting and guiding a catheter into a puncture hole in a blood vessel, and a dilator removably inserted through the sheath for receiving an introduction guide wire for the catheter. A front end of the dilator is provided with a forwardly descending conical taper surface for smoothly expanding the puncture hole. A rear end of the dilator is formed with a hub which extends therefrom for preventing the slip-off of the sheath. The sheath has a hollow hub which extends from the rear end thereof. The hub is connected for communication to a medical liquid injecting tube which is equipped with an on-off valve for injecting a heparin-containing physiological salin solution or other medical liquids for preventing blood coagulation. The outer diameter of a portion of the dilator subsequent to a forwardly descending taper surface is greater than the inner diameter of the sheath.
    Type: Grant
    Filed: March 16, 1988
    Date of Patent: July 25, 1989
    Inventor: Yuichi Furukawa
  • Patent number: 4782890
    Abstract: A heat pipe comprising a container having water enclosed therein as a working fluid and made of a material reactive with water to evolve hydrogen gas. The heat pipe is characterized in that the container has placed therein a solid oxidizing agent for oxidizing the hydrogen gas to water. The hydrogen gas produced by the reaction of the working fluid, i.e. water, with the container is oxidized to water by the oxidizing agent without remaining in the form of a gas within the condensing portion of the pipe.
    Type: Grant
    Filed: April 20, 1987
    Date of Patent: November 8, 1988
    Assignee: Showa Aluminum Corporation
    Inventors: Saburo Shimodaira, Isamu Uchida, Minoru Hasegawa, Koichiro Fukui, Yuichi Furukawa, Kazunari Noguchi
  • Patent number: 4760878
    Abstract: A process for producing a heat pipe including the steps of treating the inner surface of a steel container with an aqueous solution of a vanadate with heating, and enclosing in the container a working liquid prepared by adding an alkalinizing pH adjusting agent to pure water and having an adjusted pH of 8 to 12. When the container inner surface is treated with the aqueous vanadate solution with heating, a protective layer covering the inner surface is formed. The working liquid, when in the range of 8 to 12 in pH, maintains the protective layer in a stable state over a prolonged period of time.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: August 2, 1988
    Assignee: Showa Aluminum Corporation
    Inventors: Koichiro Fukui, Yuichi Furukawa, Kazunari Noguchi