Patents by Inventor Hellmut Hartert

Hellmut Hartert 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).

  • Apparatus and method for measuring changes in conditions in coagulating liquids
    Patent number: 4312217
    Abstract: The coagulation of blood is measured by introducing the blood into an annular gap in a beaker formed between the inner surface of the beaker and a cylindrical member depending into the beaker. The beaker is mounted on the upper end of a rod-like support. A coil arrangement about the lower part of the rod-like support impresses a circular orbiting motion on the support and beaker. Another core associated with the rod-like support measures changes in amplitude of the support produced by the development of fibrin in the blood sample in the annular gap.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: January 26, 1982
    Assignee: Dr. E. Fresenius Chem.-pharm Industrie KG
    Inventor: Hellmut Hartert
  • Apparatus and method for measuring changes in conditions in coagulating liquids
    Patent number: 4202204
    Abstract: The coagulation of blood is measured by introducing the blood into an annular gap in a beaker formed between the inner surface of the beaker and a cylindrical member depending into the beaker. The beaker is mounted on the upper end of a rod-like support. A coil arrangement about the lower part of the rod-like support impresses a circular orbiting motion on the support and beaker. Another core associated with the rod-like support measures changes in amplitude of the support produced by the development of fibrin in the blood sample in the annular gap.
    Type: Grant
    Filed: September 12, 1978
    Date of Patent: May 13, 1980
    Assignee: Dr. E. Fresenius Chem.-Pharm. Industrie KG
    Inventor: Hellmut Hartert