Patents by Inventor Heinz Lussi

Heinz Lussi 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).

  • Chemical Compound
    Patent number: 5417975
    Abstract: The invention provides a process for the preparation of high purity bone mineral wherein the organic matter in degreased bone is degraded and solubilized by heating with ammonia or a primary amine, characterized in that the solubilized degradation products are extracted by washing with flowing water at temperatures below 60.degree. C., such heating with primary amine and washing steps optionally being repeated, whereby substantially all organic matter removable by these steps is removed, the bone mineral so treated being heated in air at temperatures of up to 700.degree. C.
    Type: Grant
    Filed: January 4, 1994
    Date of Patent: May 23, 1995
    Assignee: Osteomedical Limited
    Inventors: Heinz Lussi, Peter Geistlich
  • Process for preparing high purity bone mineral
    Patent number: 5167961
    Abstract: The invention provides a process for the preparation of high purity bone mineral wherein the organic matter is degraded by heating with ammonia or a primary amine, characterized in that the solubilized degradation products are extracted by washing with flowing water at temperature below 60.degree. C., such heating with primary amine and washing steps optionally being repeated, whereby substantially all organic matter removable by these steps is removed, the bone mineral so treated being heated in air at temperatures between 250.degree. C. and 600.degree. C.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: December 1, 1992
    Assignee: Ed. Geistlich Sohne AG Fur Chemische Industrie
    Inventors: Heinz Lussi, Peter Geistlich