Patents by Inventor Katsuhiko Oka

Katsuhiko Oka 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: 8852259
    Abstract: A tubular medical treatment instrument indwelling device for indwelling a stent graft expandable in the radial direction, includes a tubular sheath, a rod member configured to move forward and backward inside the sheath along the axial direction of the sheath, and a front tip provided in the forward end portion of the rod member and includes, formed therein, an engaging portion being engageable with an engagement portion provided in the stent graft. The engaging portion is formed in a position where it is hided inside the sheath when the forward end portion of the sheath is sealed with the front tip. The tubular medical treatment instrument indwelling device is capable of inhibiting damaging of a blood vessel or freeing of parietal thrombus/parietal atheroma from occurring.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: October 7, 2014
    Assignees: Katsuhiko OKA, Yoshihiko Yokoi, Kawasumi Laboratories, Inc.
    Inventors: Katsuhiko Oka, Yoshihiko Yokoi, Kazumi Akita
  • Publication number: 20120116413
    Abstract: A tubular medical treatment instrument indwelling device for indwelling a stent graft expandable in the radial direction, includes a tubular sheath, a rod member configured to move forward and backward inside the sheath along the axial direction of the sheath, and a front tip provided in the forward end portion of the rod member and includes, formed therein, an engaging portion being engageable with an engagement portion provided in the stent graft. The engaging portion is formed in a position where it is hided inside the sheath when the forward end portion of the sheath is sealed with the front tip. The tubular medical treatment instrument indwelling device is capable of inhibiting damaging of a blood vessel or freeing of parietal thrombus/parietal atheroma from occurring.
    Type: Application
    Filed: May 25, 2010
    Publication date: May 10, 2012
    Applicants: KATSUHIKO OKA, KAWASUMI LABORATORIES, INC, YOSHIHIKO YOKOI
    Inventors: Katsuhiko Oka, Yoshihiko Yokoi, Kazumi Akita
  • Patent number: 7821177
    Abstract: A laminated core includes a laminated body, clamping plates and holding members. The laminated body includes a plurality of amorphous alloy plates, which are stacked one after another in a stacking direction such that each adjacent two of the plurality of amorphous alloy plates directly contact with each other. The clamping plates contact opposed end surfaces, respectively, of the laminated body in the stacking direction. A thickness of each of the first and second clamping plates in the stacking direction is larger than that of each of the plurality of amorphous alloy plates. Each holding member contacts with the clamping plates and maintains a predetermined space between the clamping plates while the laminated body is clamped between the clamping plates.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: October 26, 2010
    Assignee: Nippon Soken, Inc.
    Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Daisuke Miyata, Katsuhiko Oka
  • Patent number: 7814642
    Abstract: A method of manufacturing an electric rotating machine having a stator that includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding includes in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions outside the slots. The stator core includes a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding.
    Type: Grant
    Filed: June 22, 2010
    Date of Patent: October 19, 2010
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Sadahisa Onimaru, Hirohito Matsui, Hirofumi Kinjo, Katsuhiko Oka, Shinji Kouda
  • Publication number: 20100257722
    Abstract: A method of manufacturing an electric rotating machine having a stator that includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding includes in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions outside the slots. The stator core includes a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding.
    Type: Application
    Filed: June 22, 2010
    Publication date: October 14, 2010
    Applicants: NIPPON SOKEN, INC., DENSO CORPORATION
    Inventors: Sadahisa Onimaru, Hirohito Matsui, Hirofumi Kinjo, Katsuhiko Oka, Shinji Kouda
  • Patent number: 7759834
    Abstract: An electromagnetic device includes a plurality of coils formed by winding conductors. At least some of the conductors are constructed by stacking conductor constructional elements so that an eddy current generated by a leakage flux linked to the conductor is divided. An outer insulating member is disposed on an outer circumferential surface of the conductor stack for electrically insulating the conductor stack from another member. An inner insulating member whose thickness is smaller than a thickness of the outer insulating member is disposed between the conductor constructional elements adjoining to each other in the same conductor stack.
    Type: Grant
    Filed: July 5, 2007
    Date of Patent: July 20, 2010
    Assignees: Nippon Soken, Inc., Denso Corporation
    Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Katsuhiko Oka, Daisuke Miyata
  • Publication number: 20090261684
    Abstract: The stator of an electric rotating machine includes a stator core having slots formed at an inner periphery thereof, and a stator winding constituted by conductive wires wound on the slots. The stator winding including in-slot portions accommodated in the slots and turn portions each connecting each adjacent two of the in-slot portions at outside of the slots. The stator core including a core member having at least three tooth portions extending in a radial direction of the stator core and a core back portion integrally connecting the tooth portions at a radially end side thereof. The core member is configured such that each of the first tooth portions folded toward the core back portion is capable of unfolding to extend between a corresponding adjacent two of the in-slot portions when the core member is at a predetermined axial position with respect to the stator winding.
    Type: Application
    Filed: April 15, 2009
    Publication date: October 22, 2009
    Applicants: NIPPON SOKEN, INC., DENSO CORPORATION
    Inventors: Sadahisa Onimaru, Hirohito Matsui, Hirofumi Kinjo, Katsuhiko Oka, Shinji Kouda
  • Publication number: 20080231138
    Abstract: A laminated core includes a laminated body, clamping plates and holding members. The laminated body includes a plurality of amorphous alloy plates, which are stacked one after another in a stacking direction such that each adjacent two of the plurality of amorphous alloy plates directly contact with each other. The clamping plates contact opposed end surfaces, respectively, of the laminated body in the stacking direction. A thickness of each of the first and second clamping plates in the stacking direction is larger than that of each of the plurality of amorphous alloy plates. Each holding member contacts with the clamping plates and maintains a predetermined space between the clamping plates while the laminated body is clamped between the clamping plates.
    Type: Application
    Filed: February 22, 2008
    Publication date: September 25, 2008
    Applicant: NIPPON SOKEN, INC.
    Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Daisuke Miyata, Katsuhiko Oka
  • Publication number: 20080007133
    Abstract: An electromagnetic device includes a plurality of coils formed by winding conductors. At least some of the conductors are constructed by stacking conductor constructional elements so that an eddy current generated by a leakage flux linked to the conductor is divided. An outer insulating member is disposed on an outer circumferential surface of the conductor stack for electrically insulating the conductor stack from another member. An inner insulating member whose thickness is smaller than a thickness of the outer insulating member is disposed between the conductor constructional elements adjoining to each other in the same conductor stack.
    Type: Application
    Filed: July 5, 2007
    Publication date: January 10, 2008
    Applicant: NIPPON SOKEN, INC.
    Inventors: Sadahisa Onimaru, Hirofumi Kinjou, Katsuhiko Oka, Daisuke Miyata
  • Publication number: 20050022977
    Abstract: A counter-stream-mode oscillating-flow heat transport apparatus accommodates a change in volume of a liquid while preventing reduction in heat transport capability. A flow path and a buffer tank are placed in communication with each other via a throttle such as a capillary tube. This prevents a channel connecting the flow path and the buffer tank from having an excessively reduced channel resistance (flow path resistance). This prevents the fluid in a heat transport device assembly (the flow path) from only going back and forth between the heat transport device assembly and the buffer tank without experiencing liquid (pressure) oscillations in the heat transport device assembly. Accordingly, the liquid in the heat transport device assembly is prevented from being reduced in amplitude of oscillation, thereby preventing degradation in heat transport capability of the counter-stream-mode oscillating-flow heat transport apparatus.
    Type: Application
    Filed: June 11, 2004
    Publication date: February 3, 2005
    Inventors: Kimio Kohara, Seiji Inoue, Kenichi Nara, Koji Fujiki, Katsuhiko Oka, Tomoki Naganawa
  • Patent number: 4071642
    Abstract: A board-like porous material is coated with a polymerizable monomer over its upper and lower surfaces and is thereby immediately impregnated with the monomer. The material is then placed into shallow containers. A specified number of the containers containing the material are stacked, a lid is placed over the uppermost container, and the containers are hermetically closed by being held together by fastening means. The bottom wall of the container and the lid are each of a hollow structure and include a plurality of parallel partitions providing hot air passages arranged in parallel and having open front and rear ends. Finally, hot air is supplied to the passages to heat the containers, whereby the polymerizable monomer impregnating the material is vaporized, diffused through the material and then polymerized without application of pressure to the coated porous material.
    Type: Grant
    Filed: July 23, 1976
    Date of Patent: January 31, 1978
    Assignee: Asahi Fancy Plywood Co., Ltd.
    Inventor: Katsuhiko Oka