Patents by Inventor Berhard Peter Harald Schaffar

Berhard Peter Harald Schaffar 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).

  • Creatinine biosensor
    Patent number: 6861232
    Abstract: The present invention generally relates to a method for producing biosensors and a biosensor for determination of creatinine. The biosensor comprises at least two enzymes, for the amperometric determination of enzymatically degradable substances in biological liquids, the enzymes being immobilized on a working electrode.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: March 1, 2005
    Assignee: Roche Diagnostics Operations, Inc.
    Inventor: Berhard Peter Harald Schaffar
  • Creatinine biosensor
    Publication number: 20030027239
    Abstract: The invention relates to a method for producing biosensors that comprise at least two enzymes for the amperometric determination of enzymatically cleavable substances, such as creatinine, in biological liquids, the enzymes being immobilized on a working electrode. An enzyme is applied on the working electrode with one or more surface-active substances in an aqueous solution and is allowed to dry. The at least second enzyme is chemically immobilized thereon in a subsequent step, thereby allowing for shorter response times and stronger signals of the biosensor.
    Type: Application
    Filed: July 21, 2002
    Publication date: February 6, 2003
    Inventor: Berhard Peter Harald Schaffar