Patents by Inventor Kajsa Bjorklund

Kajsa Bjorklund 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).

  • Patent number: 7048792
    Abstract: The invention describes a low temperature method for producing multi-layered or multi-phased coatings. With the technique according to the present invention, surface coatings with controlled variations in terms of chemical composition, phase composition, porosity, surface roughness, mechanical properties, biocompatibility, etc can be achieved. The method of coating a substrate surface comprising the steps of preparing one powder mixture, or several powder mixtures having different chemical composition, wherein at least one of said powder mixtures comprise a non-hydrated hydraulic ceramic powder binder phase, pre-treating a substrate surface, to increase the adhesion between the substrate and the ceramic coating, applying one or more different layers on top of each other of the non-hydrated powder mixture on the substrate, and finally, hydrating the powder layer/layers in a curing agent containing ions of carbonates, phosphates or fluorides.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: May 23, 2006
    Assignee: Cerbio Tech AB
    Inventors: Niklas Axen, Kajsa Bjorklund, Leif Hermansson, Hakan Engqvist
  • Patent number: 7025824
    Abstract: A chemically bonded ceramic material based on calcium aluminate hydrate with additives of primarily calcium titanate, but also chemically similar compounds. The material is a biocompatible material for implants, particularly for orthopaedic and dental applications. The material possesses the properties required for an orthopaedic biocement. It cures through reaction with water and develops its strength within a short period of time, has good workability prior to curing, is shape stable, has a low heat generation during curing, and is friendly to adjacent tissues.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: April 11, 2006
    Assignee: CerBio Tech AB
    Inventors: Niklas Axén, Leif Hermansson, Tobias Persson, Kajsa Björklund, Lars Kraft
  • Publication number: 20040237847
    Abstract: A chemically bonded ceramic material based on calcium aluminate hydrate with additives of primarily calcium titanate, but also chemically similar compounds. The material is a biocompatible material for implants, particularly for orthopaedic and dental applications. The material possesses the properties required for an orthopaedic biocement. It cures through reaction with water and develops its strength within a short period of time, has good workability prior to curing, is shape stable, has a low heat generation during curing, and is friendly to adjacent tissues.
    Type: Application
    Filed: December 19, 2002
    Publication date: December 2, 2004
    Inventors: Niklas Axen, Leif Hermansson, Tobias Persson, Kajsa Bjorklund, Lars Kraft
  • Publication number: 20040146752
    Abstract: The invention describes a low temperature method for producing multi-layered or multi-phased coatings. With the technique according to the present invention, surface coatings with controlled variations in terms of chemical composition, phase composition, porosity, surface roughness, mechanical properties, biocompatibility, etc can be achieved. The method of coating a substrate surface comprising the steps of preparing one powder mixture, or several powder mixtures having different chemical composition, wherein at least one of said powder mixtures comprise a non-hydrated hydraulic ceramic powder binder phase, pre-treating a substrate surface, to increase the adhesion between the substrate and the ceramic coating, applying one or more different layers on top of each other of the non-hydrated powder mixture on the substrate, and finally, hydrating the powder layer/layers in a curing agent containing ions of carbonates, phosphates or fluorides.
    Type: Application
    Filed: October 24, 2003
    Publication date: July 29, 2004
    Inventors: Niklas Axen, Kajsa Bjorklund, Leif Hermansson, Hakan Engqvist
  • Publication number: 20040126566
    Abstract: The invention describes a low temperature method for producing multi-layered or multi-phased coatings. With the technique according to the present invention, surface coatings with controlled variations in terms of chemical composition, phase composition, porosity, surface roughness, mechanical properties, biocompatibility, etc can be achieved. The method of coating a substrate surface comprises the steps of preparing several powder mixtures of different chemical composition containing at least a non-hydrated hydraulic ceramic powder binder phase, pre-treating a substrate surface, to increase the adhesion between the substrate and the ceramic coating, applying said non-hydrated powder mixtures of different chemical composition on the substrate as layers on top of each other, and finally, hydrating the powder layers in a curing agent.
    Type: Application
    Filed: October 24, 2003
    Publication date: July 1, 2004
    Inventors: Niklas Axen, Kajsa Bjorklund, Leif Hermansson
  • Publication number: 20030215484
    Abstract: Surface coating method for applying a chemically bonded ceramic coating on a substrate, comprising the steps of preparing a powder mixture based on a hydraulic ceramic binder phase, preparing a substrate surface, applying at least one layer of the powder mixture on the substrate, and finally hydrating the powder layer/layers by addition of a water-based solution. The present invention method can be applied without using elevated temperatures, complicated and complex equipment, while maintaining control over the microstructure of the coating. The inventive procedure can suitably be used for producing general orthopaedic and dental implants. The inventive coatings can also be used in microstructure technology applications or in wear and friction applications.
    Type: Application
    Filed: March 4, 2003
    Publication date: November 20, 2003
    Inventors: Niklas Axen, Kajsa Bjorklund, Leif Hermansson