Patents by Inventor Eberhard Henkel

Eberhard Henkel 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).

  • Process and reagent for the determination of .alpha.-amylase
    Patent number: 4857640
    Abstract: A process and a reagent for the determination of .alpha.-amylase involve enzymatic splitting of an .alpha.-amylase substrate in the presence of .alpha.-glucosidase and .beta.-glucosidase and measurement of a fission product. As substrate, there is used a 4-nitrophenyl-.beta.,D-maltoheptaoside electronegatively substituted in the phenyl nucleus.
    Type: Grant
    Filed: August 4, 1987
    Date of Patent: August 15, 1989
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Eberhard Henkel, Barkew Dolabdjian, Roland Helger, Rainer Klink, Uwe Wurzburg
  • Process and reagent for the determination of .alpha.-amylase
    Patent number: 4698300
    Abstract: A process and reagent are described for the determination of .alpha.-amylase by enzymatic splitting of an .alpha.-amylase substrate in the presence of .alpha.-glucosidase and .beta.-glucosidase and measurement of a fission product. The substrate utilized is a 4-nitrophenyl-.beta.,D-maltoheptaoside substituted in the phenyl ring by an electron withdrawing group, preferably a 2-chloro group.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: October 6, 1987
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Eberhard Henkel, Barkew Dolabdjian, Roland Helger, Rainer Klink, Uwe Wurzburg