Patents by Inventor Klaus Pfaff

Klaus Pfaff 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).

  • Method for producing monoesters and diesters of polytetrahydrofuran and of tetrahydrofuran copolymers
    Publication number: 20060052551
    Abstract: The present invention provides a process for preparing mono- or diesters of polytetrahydrofuran or of tetrahydrofuran copolymers by polymerizing tetrahydrofuran in the presence of at least one telogen and/or of a comonomer over an acidic catalyst, wherein the polymerization reactor is started up using a mixture of polytetrahydrofuran, the mono- or diesters of polytetrahydrofuran and/or of the THF copolymers, tetrahydrofuran, any comonomer and at least one carboxylic acid and/or one carboxylic anhydride.
    Type: Application
    Filed: September 4, 2003
    Publication date: March 9, 2006
    Inventors: Rolf Pinkos, Achim Gerstlauer, Martin Haubner, Stephan Sehlitter, Stefan Kashammer, Klaus Pfaff
  • Gas turbine propulsion unit with devices for branching off compressor air for cooling of hot parts
    Patent number: 4825643
    Abstract: In a gas turbine propulsion unit with means for branching off compressor air for purposes of cooling hot parts of the turbine, the cooling air is conducted to the hot parts to be cooled along a detour by way of structural parts of high heat capacity and large surface area. It is achieved therewith that with a jump-like change of the cooling air temperature as, for example, during an acceleration operation, the cooling air gives off a portion of its heat content along the detour to the structural parts so that the thermal time behavior of the cooling air is slowed down.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: May 2, 1989
    Assignee: MTU Motoren- und Turbinen-Union Munchen GmbH
    Inventors: Dietmar Hennecke, Klaus Pfaff, Dietrich Grigo
  • Gas turbine propulsion unit with devices for branching off compressor air for cooling of hot parts
    Patent number: 4761947
    Abstract: In a gas turbine propulsion unit with means for branching off compressor air for purposes of cooling hot parts of the turbine, the cooling air is conducted to the hot parts to be cooled along a detour by way of structural parts of high heat capacity and large surface area. It is achieved therewith that with a jump-like change of the cooling air temperature as, for example, during an acceleration operation, the cooling air gives off a portion of its heat content along the detour to the structural parts so that the thermal time behavior of the cooling air is slowed down.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: August 9, 1988
    Assignee: MTU Motoren- Und Turbinen- Union Munchen GmbH
    Inventors: Dietmar Hennecke, Klaus Pfaff, Dietrich Grigo