Patents by Inventor Tetsuya Sakakibara

Tetsuya Sakakibara 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: 8925625
    Abstract: A heat exchanger has a flat tube (10) having a curved portion (13). A part of the curved portion (13) is formed by overlapping an outer rim (22) on an inner rim (21). The inner rim (21) has a small curvature region (102). The small curvature region (102) is inclined to a flat plate portion (11), and is defined by a radius larger than a difference between a half of a thickness of the flat tube (10) and a thickness of the outer rim (22). The small curvature region (102) is not beyond a center line (C1) in a thickness of the flat tube (10). The outer rim (22) extends beyond the center line (C1). The outer rim (22) has an end face (22a) placed on the small curvature region (102). The flat tube (10) has flared portions (15, 16) expanded at insertion holes (54).
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: January 6, 2015
    Assignee: Denso Corporation
    Inventors: Toshihide Ninagawa, Tatsuo Ozaki, Takahide Oohara, Noriyuki Miyazaki, Mitsuyoshi Saito, U Ou, Norio Yoshida, Tetsuya Sakakibara, Kazuhiro Mitsukawa
  • Publication number: 20130220585
    Abstract: A cylindrical member of a tube for a heat exchanger is made of a pair of flat plate portions, and a pair of curved portions for connecting the pair of flat plate portions to each other. One of the pair of curved portions constructs a bonded portion in which an outer wall portion and an inner wall portion are bonded to each by brazing in a state where the outer wall portion and the inner wall portion overlap each other. The inner wall portion has a portion opposite to the outer wall portion put into close contact with the outer wall portion and is bonded to the one flat plate portion in a state where a tip end portion of the inner wall portion opposite to the one flat plate portion is separated from the one flat plate portion.
    Type: Application
    Filed: November 4, 2011
    Publication date: August 29, 2013
    Applicant: DENSO CORPORATION
    Inventors: Takahide Oohara, Hiroshi Hamada, Norio Yoshido, Tetsuya Sakakibara, Kazuhiro Mitsukawa, U Ou, Hiroyuki Genda, Mitsuyoshi Saitou, Tadashi Nakabou, Noriyuki Miyazaki, Norimasa Baba, Hiroyasu Shimanuki
  • Publication number: 20100206533
    Abstract: A heat exchanger includes a plurality of tubes in which a thermal fluid flows, and a tank located at one longitudinal end portion of each tube and is brazed to the longitudinal end portions of the tubes to communicate with the tubes. The tank and the tube are respectively made of clad material plates in each of which a brazing material is clad on at least one surface of a core material. The brazing material of the tank and the brazing material of the tube respectively include Si content. Furthermore, a rate of the Si content in the brazing material of the tank is lower than that in the brazing material of the tube, and is in a range larger than 0% and equal to or smaller than 6%. Thus, meltage of the tube due to molten brazing material can be reduced during brazing of the tube and the tank.
    Type: Application
    Filed: January 19, 2010
    Publication date: August 19, 2010
    Applicant: DENSO CORPORATION
    Inventors: Tetsuya Sakakibara, Shoei Teshima
  • Publication number: 20060219295
    Abstract: Highly-pure water is stored into a storage tank 46 by reducing an impurity-ion content to not greater than a specified rate by removing impurity ions via a device 43, for manufacturing pure water, containing ion-exchange resin, and by reducing a dissolved-oxygen content to not greater than a specified rate by heating-deaerating with a heater 44 and reducing the pressure during storage in the storage tank 46. Highly-pure water to be stored is injected from a gun 10 into a vessel body 1 while detecting a flow-rate via a mass-flow meter 53. Therefore, a highly-accurate amount of water, with high purity, can be filled into the vessel body 1.
    Type: Application
    Filed: March 28, 2006
    Publication date: October 5, 2006
    Applicants: DENSO Corporation, TO-OU KOGYO CO., LTD.
    Inventors: Tetsuya Sakakibara, Noriyasu Kumaki
  • Patent number: 5727411
    Abstract: Each of specific rollers which corresponds to one of the grooves is disposed in a circumference of the metal pipe at equal intervals and is pressed against the periphery of the metal pipe 10, thereby forming a plurality of the grooves at the same time. Because each of the grooves is formed by a specific forming roller, a plurality of the grooves can be formed separately, and the material of the wall between the grooves is prevented from being drawn. Thus, the grooves can be formed into a desired shape.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: March 17, 1998
    Assignee: Denso Corporation
    Inventors: Tetsuya Sakakibara, Yoshitaka Kuroda
  • Patent number: 5206275
    Abstract: An expandable, powder coating composition is disclosed which includes (a) a thermoplastic resin containing a hydroxyl group-containing polymer, (b) a cross-linking agent containing a polyisocyanate compound which is capable crosslinking the thermoplastic resin, (c) a blowing agent, and (d) a mixture of a solid plasticizer such as triphenyl phosphate and a liquid plasticizer such as dioctyl phthalate.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: April 27, 1993
    Assignee: Somar Corporation
    Inventors: Masao Kubo, Atumi Nakamura, Tetsuo Miyake, Katsuji Kitagawa, Katsuya Sano, Kiyoshi Kittaka, Tetsuya Sakakibara
  • Patent number: 5063095
    Abstract: An expandable, powder coating composition is disclosed which comprises (a) a thermoplastic resin containing a copolymer of ethylene with vinyl acetate, (b) a cross-linking agent containing an organic peroxide, (c) a blowing agent, and (d) an organic plasticizer. Powder coating of a surface of a tube or box to be used in air conditioners with the coating composition can give a heat-insulating, foamed sheath or lining over the surface.
    Type: Grant
    Filed: September 5, 1990
    Date of Patent: November 5, 1991
    Assignees: Somar Corporation, Nippondenso Co., Ltd.
    Inventors: Katsuji Kitagawa, Kazutomo Moriguchi, Tetsuo Miyake, Katusya Sano, Kiyoshi Kittaka, Tetsuya Sakakibara