Patents by Inventor Hartmut Steffen

Hartmut Steffen 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).

  • Process for preparing ceramic implants for medical purposes
    Patent number: 9241795
    Abstract: A process for manufacturing a ceramic implant with a surface which forms a permanent bonding to bone cell tissues, the surface providing improved osseointegration, the process comprising the step of:—a pretreatment of the ceramic material with the surface wherein said surface of the ceramic material is exposed to a conditioning plasma, which is produced by means of direct current (DC) or alternating current (AC), such as high or radio frequency (HF, RF), or microwaves (MW) at a low pressure, followed by a second step;—a treatment with a reactive plasma in which an organic compound is added to the plasma for the at least partial application of an organic phase to said surface wherein the organic compound is selected from the group consisting of aliphatic amines, cyclic amines, unsaturated and aromatic amines as well as combinations thereof.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: January 26, 2016
    Assignee: VITA ZAHNFABRIK H. RAUTER GMBH & CO.
    Inventors: Andre Schöne, Jens Fischer, Karsten Schröder, Hartmut Steffen, Wilfried Besch, Andreas Vogelsang, Klaus-Dieter Weltmann, Barbara Nebe, Steffi Schroder, Beatrix Fett
  • PROCESS FOR PREPARING CERAMIC IMPLANTS FOR MEDICAL PURPOSES
    Publication number: 20140214174
    Abstract: A process for manufacturing a ceramic implant with a surface which forms a permanent bonding to bone cell tissues, the surface providing improved osseointegration, the process comprising the step of:—a pretreatment of the ceramic material with the surface wherein said surface of the ceramic material is exposed to a conditioning plasma, which is produced by means of direct current (DC) or alternating current (AC), such as high or radio frequency (HF, RF), or microwaves (MW) at a low pressure, followed by a second step;—a treatment with a reactive plasma in which an organic compound is added to the plasma for the at least partial application of an organic phase to said surface wherein the organic compound is selected from the group consisting of aliphatic amines, cyclic amines, unsaturated and aromatic amines as well as combinations thereof.
    Type: Application
    Filed: September 5, 2012
    Publication date: July 31, 2014
    Inventors: Andre Schöne, Jens Fischer, Karsten Schröder, Hartmut Steffen, Wilfried Besch, Andreas Vogelsang, Klaus-Dieter Weltmann, Barbara Nebe