Patents by Inventor Kari Koster

Kari Koster 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: 4322398
    Abstract: An implantable drug depot for the treatment of diseases of the bone or bone marrow. The depot consisting of a matrix in which at least one active ingredient is incorporated and contains at least one adjuvant agent to control the kinetics of the drug release. The matrix material consists of resorbable sintered calcium phosphate composed of CaO and P.sub.2 O.sub.5 in a ratio between 5:1 and 2:1.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: March 30, 1982
    Assignee: Battelle Institut e.V.
    Inventors: Roland Reiner, Wolfgang KiBing, Helga Doring, Kari Koster-Losche, Helmut Heide
  • Patent number: 4202055
    Abstract: An implantable prosthesis anchorage which contains a non-porous outer coating in the regions which is positioned in contact with bone. The non-porous outer coating consists of (i) at least one bioactive resorbable ceramic material which is a calcium phosphate and (ii) at least one polymer which is mechanically and chemically stable in the body. The ceramic material is in particulate form having particle diameters between 0.5 and 1 mm. The ceramic material particles is incorporated in the polymer in such a way that resorption of the ceramic material leads to a polymer structure with continuous pores filled with living bone tissue. Bioactivating bonding residues of the ceramic material are left on the inner surfaces of the filled pores which were created by the resorption of the ceramic material.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: May 13, 1980
    Assignee: Battelle-Institut e.V.
    Inventors: Roland Reiner, Helmut Heide, Kari Koster
  • Patent number: 4192021
    Abstract: Bone replacement or prosthesis anchoring material on the basis of sintered calcium phosphates which consists of a mixture of calcium phosphates with low or high-molecular-weight organic substances. More specifically, the anchoring material consists of a mixture of calcium phosphates composed of CaO and P.sub.2 O.sub.5 in a quantitative ratio of 2:1 to 4:1 with biodegradable polymers in a ratio of 10:1 to 1:1 of phosphate to polymer and is implantable as a solid body. A method for the production of the material wherein calcium phosphate with a porosity of 15 to 30 volume percent is used and its pores are filled by impregnation with polymer material.
    Type: Grant
    Filed: May 12, 1977
    Date of Patent: March 11, 1980
    Assignee: Batelle-Institut e.V.
    Inventors: Heinrich Deibig, Helmut Heide, Roland Reiner, Kari Koster
  • Patent number: 4178686
    Abstract: An artificial tooth with an implantable root adapted to permanently grow together with the jawbone and, also under high mechanical loads as is the case for natural teeth, will not allow for the production of a rejection or repelling reaction between the natural bone and the implant. The tooth root is essentially constituted of a biostable polymer matrix which is compatible with human tissue, in which there is introduced reabsorbable bioreactive calcium phospate in a finely dispersed form, which is encompassed by a thin porous layer of non-reabsorbable calcium phospate, and into which there is inserted a core as a connecting member for the mounting of a dental superstructure in the form of a tooth crown, a fastening element for dental bridges or the like.
    Type: Grant
    Filed: January 6, 1978
    Date of Patent: December 18, 1979
    Assignee: Guido Reiss
    Inventors: Guido Riess, Helmut Heide, Roland Reiner, Kari Koster, Gunther Brotz