Patents by Inventor Giselher Wall

Giselher Wall 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).

  • Dental prosthetic joining process by casting-on and primary moulds therefor
    Patent number: 5322110
    Abstract: In a dental prosthetic casting-on process, in which a secondary part made of metal is cast-on to a primary part made of metal, a primary part made from an oxide-forming metal alloy may be used if the latter's casting-on surface is alloyed, prior to casting-on, with a reducing metalloid. In this regard, boron, silicon or phosphorus, for example, can be made to diffuse into the surface lattice of the primary part. A primary part made from an oxide-forming dental alloy and suitable for such a casting-on process exhibits in its casting-on surface an enhanced boron or silicon or phosphorus content.
    Type: Grant
    Filed: January 17, 1992
    Date of Patent: June 21, 1994
    Assignee: Giselher Wall
    Inventors: Giselher Wall, Manfred Lutzman
  • Process for producing a casting consisting of a primary piece and a secondary piece using the casting-on technique and a ceramic insulating compound suitable for this
    Patent number: 5255730
    Abstract: In the production of cast fittings by the precision casting process of the casting-on technique, primary and secondary pieces can be easily separated from one another if the primary piece surface is isolated with a ceramic interlayer being chemically not attackable by the constituents of the alloys used. An interlayer containing zirconium dioxide is especially preferred.
    Type: Grant
    Filed: October 1, 1991
    Date of Patent: October 26, 1993
    Inventor: Giselher Wall