Patents by Inventor Shinichiro Yokoyama

Shinichiro Yokoyama 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: 12038275
    Abstract: The present disclosure includes: a magnetic member configured to cause a large Barkhausen effect; a power generation coil disposed so as to be wound around the magnetic member; and soft magnetic members formed at both end portions of the magnetic member so as to be in contact with the magnetic member and so as to press the magnetic member. Consequently, evenness of a magnetic flux density inside the magnetic member is increased, and the large Barkhausen effect is stably caused, whereby a highly stable power generation element is obtained.
    Type: Grant
    Filed: March 23, 2021
    Date of Patent: July 16, 2024
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshitomo Nakamura, Shinichiro Yoshida, Hisanori Torii, Masanori Nimura, Shizuka Ueda, Yuji Kubo, Takuya Noguchi, Akira Yokoyama, Takeshi Musha, Yoshinori Miyamoto
  • Patent number: 7815749
    Abstract: The present invention provides a method of manufacturing a semi-hard magnetic material comprising, sequentially: preparing a raw material consisting essentially of 10.0 to 25.0% of Ni, 2.0 to 6.0% of Mo and the balance being Fe and inevitable impurities, in mass %; heat-treating or hot-working the raw material so that it has not less than 90% of martensitic structure; cold-working the material at a reduction of area of not less than 50% so that it has an extended structure including not less than 95% of a martensitic structure; and heat-treating the material in a range of 400 to 570° C. so as to generate more than 0% but less than 30.0% of reverse-transformed austenitic structure. The semi-hard magnetic material manufactured using this method can possess a coercive force of 1000 to 5600 A/m.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: October 19, 2010
    Assignee: Hitachi Metals, Ltd.
    Inventor: Shinichiro Yokoyama
  • Patent number: 7329237
    Abstract: To provide infusion therapy that can effectively transluminally deliver drugs or the like to a target spot without invading areas other than a diseased area. The infusion therapy is for administering a drug, cells or the like, or inserting a treatment instrument into the target diseased area. A blood vessel area including a bifurcated blood vessel connecting to the diseased area is occluded at the distal and the proximal region thereof to form an occluded area, and the drugs or the like are pumped and supplied to the occluded area, which causes the drugs or the like to flow retrogressively and retentively in the bifurcated blood vessel connecting in the occluded area, and be infused and administered to the diseased area.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: February 12, 2008
    Assignee: Nihon University
    Inventors: Shinichiro Yokoyama, Satoshi Saito, Noboru Fukuda, Daisuke Kawabe
  • Publication number: 20080000560
    Abstract: The present invention provides a method of manufacturing a semi-hard magnetic material comprising, sequentially: preparing a raw material of consisting essentially of 10.0 to 25.0% of Ni:, 2.0 to 6.0% of Mo and the balance being Fe and inevitable impurities, in mass %; heat-treating or hot-working the raw material so that it has not less than 50% of martensitic structure; cold-working the material at a reduction of area of not less than 50% so that it has a extended structure including not less than 95% of a martensitic structure; and heat-treating the material in a range of 400 to 570° C. so as to generate more than 0% but less than 30.0% of reverse-transforraed austenitic structure. The semi-hard magnetic material manufactured using this method can obtain a coercive force of 1000 to 5600 A/m.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 3, 2008
    Applicant: Hitachi Metals, Ltd.
    Inventor: Shinichiro YOKOYAMA
  • Patent number: 7141208
    Abstract: An Fe—Co—B alloy target, in which the largest inscribed circle depictable in regions containing no boride phases in its cross-sectional microstructure has a diameter of 30 ?m or less. Its composition is represented by (FeXCo100?X)100?YBY (by atomic percentage), wherein 5?X?95, and 5?Y?30.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: November 28, 2006
    Assignee: Hitachi Metals, Ltd.
    Inventors: Hide Ueno, Tomonori Ueno, Shinichiro Yokoyama
  • Publication number: 20060195136
    Abstract: A balloon catheter capable of adjusting a position to inflate a balloon in the axial direction of a catheter is provided.
    Type: Application
    Filed: February 22, 2006
    Publication date: August 31, 2006
    Applicant: NIHON UNIVERSITY
    Inventors: Shinichiro Yokoyama, Satoshi Saito, Noboru Fukuda
  • Publication number: 20050273050
    Abstract: To provide a catheter and a method for infusion therapy that can effectively transluminally deliver drugs or the like to a target spot without invading areas other than a diseased area. The catheter is a balloon catheter for insertion into a blood vessel in which four lumens extending along an axis are formed in one catheter body, and two balloons are arranged axially in parallel. The plurality of lumens include: an infusion lumen that communicates with an infusion hole between the two balloons; balloon lumens that communicate with insides of the two balloons to expand the balloons; and a guide lumen that also serves as a bypass lumen that communicates with an outside of the catheter body in each position distal and proximal, which is outside of the two balloons with respect to a tip a of the catheter body, and bypasses an occluded area formed by the two balloons to allow blood flow.
    Type: Application
    Filed: October 8, 2003
    Publication date: December 8, 2005
    Applicant: Nihon University
    Inventors: Shinichiro Yokoyama, Satoshi Saito, Noboru Fukuda, Daisuke Kawabe
  • Publication number: 20050159703
    Abstract: To provide infusion therapy that can effectively transluminally deliver drugs or the like to a target spot without invading areas other than a diseased area. The infusion therapy is for administering a drug, cells or the like, or inserting a treatment instrument into the target diseased area. A blood vessel area including a bifurcated blood vessel connecting to the diseased area is occluded at the distal and the proximal region thereof to form an occluded area, and the drugs or the like are pumped and supplied to the occluded area, which causes the drugs or the like to flow retrogressively and retentively in the bifurcated blood vessel connecting in the occluded area, and be infused and administered to the diseased area.
    Type: Application
    Filed: March 10, 2005
    Publication date: July 21, 2005
    Applicant: Nihon University
    Inventors: Shinichiro Yokoyama, Satoshi Saito, Noboru Fukuda, Daisuke Kawabe
  • Patent number: 6849983
    Abstract: The rotary machine is composed of the rotor having magnetic poles and the stator having the stator yoke portion constituting the iron core tooth portion wound by the stator winding and the flux flow path of the magnetic poles. The rotor is composed of a metallic material having ferromagnetic parts and non-magnetic parts as a member and has a magnetic barrier area composed of the slit portion for blocking the bypath magnetic path in the periphery of the rotor and the non-magnetic parts. The rotary machine that produced torque can be increased sufficiently and the mechanical strength during high-speed running is improved and an electrical vehicle using it.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: February 1, 2005
    Assignees: Hitachi, Ltd., Hitachi Metals, Ltd.
    Inventors: Fumio Tajima, Yutaka Matsunobu, Masashi Kitamura, Kiyoshi Yamaguchi, Osamu Koizumi, Suetaro Shibukawa, Shigeki Morinaga, Yukinori Taneda, Hideki Nakamura, Hakaru Sasaki, Shinichiro Yokoyama
  • Publication number: 20050011308
    Abstract: An Fe—Co—B alloy target, in which the largest inscribed circle depictable in regions containing no boride phases in its cross-sectional microstructure has a diameter of 30 ?m or less. Its composition is represented by (FeXCo100?X)100?YBY (by atomic percentage), wherein 5?X?95, and 5?Y?30.
    Type: Application
    Filed: April 28, 2004
    Publication date: January 20, 2005
    Inventors: Hide Ueno, Tomonori Ueno, Shinichiro Yokoyama