Patents by Inventor Eduard Michel

Eduard Michel 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).

  • Use of metal carboxylates and sulfonates as charge control agents
    Patent number: 6207335
    Abstract: Use of metal carboxylates and sulfonates as charge control agents Metal carboxylates and metal sulfonates are employed as charge control agents in electrophotographic toners and developers, as charge improvers in powder coating materials and electret materials, and in electrostatic separation processes.
    Type: Grant
    Filed: August 17, 1999
    Date of Patent: March 27, 2001
    Assignee: Clariant GmbH
    Inventors: Eduard Michel, Ruediger Baur, Hans-Tobias Macholdt
  • Use of inter-polyelectrolyte complexes as charge control agents
    Patent number: 6030738
    Abstract: Inter-polyelectrolyte complexes (IPECs) are employed as charge control agents and charge improvers in electrophotographic toners and developers, in triboelectrically or electrokinetically sprayable powders and powder coating materials and in electret materials.
    Type: Grant
    Filed: July 30, 1998
    Date of Patent: February 29, 2000
    Assignee: Clariant GmbH
    Inventors: Eduard Michel, Ruediger Baur, Hans-Tobias Macholdt