Patents by Inventor Karl Strnat

Karl Strnat 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).

  • Method of increasing the coercive force of pulverized rare earth-cobalt alloys
    Patent number: 4115159
    Abstract: The coercive force of pulverized selected rare earth-cobalt alloys is increased or maintained at least at its initial value by depositing tin on the surface of the alloy particles and subjecting the particles to a heat treatment so as to cause diffusion of the tin into the particle structure.Permanent magnets formed from tin enriched rare earth-cobalt alloy particles are also disclosed.
    Type: Grant
    Filed: August 2, 1977
    Date of Patent: September 19, 1978
    Assignee: TH. Goldschmidt AG
    Inventors: Ekkehard Greinacher, Klaus Reinhardt, Karl Strnat
  • Method of increasing the coercive force of pulverized rare earth-cobalt alloys
    Patent number: 4063971
    Abstract: The coercive force of pulverized selected rare earth-cobalt alloys is increased or maintained at least at its initial value by depositing tin on the surface of the alloy particles and subjecting the particles to a heat treatment so as to cause diffusion of the tin into the particle structure.Permanent magnets formed from tin enriched rare earth-cobalt alloy particles are also disclosed.
    Type: Grant
    Filed: February 18, 1971
    Date of Patent: December 20, 1977
    Assignee: Th. Goldschmidt AG
    Inventors: Ekkehard Greinacher, Klaus Reinhardt, Karl Strnat
  • Permanent magnet on the basis of cobalt-rare earth alloys and method for its production
    Patent number: 3998669
    Abstract: A permanent magnet is disclosed which exhibits pronounced ductility combined with a mechanical strength satisfactory for many applications and which can be machined with conventional steel tools. The magnet is formed by compacting at least one magnetic powder comprising a cobalt-rare earth alloy admixed with a metallic binder. The binder is a solder of a melting point below 400.degree. C and bonds the particles of the magnetic powder. Procedures for forming the novel magnets are also disclosed.
    Type: Grant
    Filed: August 14, 1975
    Date of Patent: December 21, 1976
    Assignee: Th. Goldschmidt AG
    Inventor: Karl Strnat