Patents by Inventor David T. Drees

David T. Drees 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).

  • Safer method for dissolving gallstones combining hyodeoxycholic acid with chenodeoxycholic acids
    Patent number: 4079133
    Abstract: The administration of hyodeoxycholic acid (HDCA) with chenodeoxycholic acid (CDCA) effects a lowering of serum glutamic-oxaloacetic transaminase, serum glutamic-pyruvate transaminase and alkaline phosphatase in the blood relative to the administration of CDCA alone.
    Type: Grant
    Filed: February 6, 1976
    Date of Patent: March 14, 1978
    Assignee: Warren-Teed Laboratories, Inc.
    Inventors: David T. Drees, Anthony R. Imondi