Patents by Inventor Yasuhiko Tonakawa

Yasuhiko Tonakawa 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).

  • Wire for ornaments and method for making the same
    Patent number: 5528909
    Abstract: A wire for ornaments having a structure or construction thereof in which the wire is directly connected to a fastener, without the use of a bulky and heavy connecting element. Rings are integrally formed respectively at both ends of the wire which is made of metal and which joins or links jewels to each other. The rings have a diameter thereof which prevents the jewels from coming off, and are made to a flat shape or contour which is inconspicuous. Through bores 6 are formed respectively in the rings. A connecting ring of the fastener is passed through the through bore 6. The fastener is directly connected to the ring.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: June 25, 1996
    Inventor: Yasuhiko Tonakawa