Patents by Inventor Sergio Graser

Sergio Graser 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).

  • Plate link for attaching a clasp link to an ornamental chain and a method of attaching the end of a chain to a clasp link
    Patent number: 6230961
    Abstract: A plate link (1), for attaching a clasp link (5) to the end of an ornamental chain (4), is provided for welding electrically at point (2) to constitute an unopenable ring, at one side of which is attached the end (3) of the ornamental chain (4) and at the other side of the clasp link (5) of a normal type. The novel method of attaching the end of a chain to a clasp link by means of the plate link involves the use of electrically welding the plate link and is carried out in the absence of any weld material.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: May 15, 2001
    Inventor: Sergio Graser
  • Jewelry chain
    Patent number: D392205
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: March 17, 1998
    Assignee: Graser Pietro & Figli S.p.A.
    Inventor: Sergio Graser