Patents by Inventor Yukyo TAKADA

Yukyo TAKADA 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).

  • Magnet assembly for dental magnetic attachment
    Patent number: 10182889
    Abstract: A magnet assembly for a dental magnetic attachment comprising a cup-shaped yoke of substantially Ni-free ferritic stainless steel, a permanent magnet received in a recess of the cup-shaped yoke, a seal member sealing an opening of the cup-shaped yoke, and an abutment-welded portion of the seal member and the cup-shaped yoke; the seal member comprising a center portion of substantially Ni-free ferritic stainless steel; an intermediate portion of substantially Ni-free austenitic stainless steel having a nitrogen content of 0.5-2.0% by mass, and a peripheral portion made of substantially Ni-free ferritic stainless steel having a nitrogen content of 1.3% or less by mass, smaller than in the intermediate portion.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: January 22, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Yukyo Takada, Masatoshi Takahashi, Akira Kikuchi
  • MAGNET ASSEMBLY FOR DENTAL MAGNETIC ATTACHMENT
    Publication number: 20170143455
    Abstract: A magnet assembly for a dental magnetic attachment comprising a cup-shaped yoke of substantially Ni-free ferritic stainless steel, a permanent magnet received in a recess of the cup-shaped yoke, a seal member sealing an opening of the cup-shaped yoke, and an abutment-welded portion of the seal member and the cup-shaped yoke; the seal member comprising a center portion of substantially Ni-free ferritic stainless steel; an intermediate portion of substantially Ni-free austenitic stainless steel having a nitrogen content of 0.5-2.0% by mass, and a peripheral portion made of substantially Ni-free ferritic stainless steel having a nitrogen content of 1.3% or less by mass, smaller than in the intermediate portion.
    Type: Application
    Filed: March 19, 2015
    Publication date: May 25, 2017
    Applicant: HITACHI METALS, LTD.
    Inventors: Yukyo TAKADA, Masatoshi TAKAHASHI, Akira KIKUCHI