Patents by Inventor Jean-Philip Hulin

Jean-Philip Hulin 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).

  • Toner mixture and process for preparing the same
    Patent number: 6828072
    Abstract: The present invention describes a process for preparing a toner mixture comprising mixing a first toner with at least one further toner wherein the first toner has an acid value of from 0.1 to 30 mgKOH/g and comprises at least one binder resin and at least one coloring agent wherein said binder comprises as the main component a polyester resin and wherein the further toners comprise at least a binder resin and optionally at least one coloring agent. It also describes a developer composition comprising said toner mixture and optionally a carrier. The new toner mixture does not show any de-mixing phenomenon during repeated use.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: December 7, 2004
    Assignee: OCE Printing Systems GmbH
    Inventors: Masahito Yamazaki, Jiro Takemoto, Hiromi Ueno, Koji Akiyama, Jean-Philip Hulin, Josef Knott, Manfred Münz, Andreas Paul