Priority Date: 02.08.04 (JP 20040225730)

Method of manufacturing a hollow power transmission shaft

  • Application ID: EP08012227
  • Status: No opposition filed within time limit


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This EP application has the IPC class B21 (MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL) and F16 (ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL). We found, that Findeisen Neumann, Geyer Fehners & Partner mbB, Cohausz & Florack Partnerschaftsgesellschaft mbB, Martin Reuther Patentanwalt, Bockermann Ksoll Griepenstroh Osterhoff and 37 others are specialized in this combination either. For a similar patent, they might be a good choice.


  • 02.08.2004 - Priority Date (JP 20040225730)
  • 01.10.2008 - Publication A2 (EP1974837)
  • 15.10.2008 - Publication A3 (EP1974837)
  • 25.11.2009 - Publication B1 (EP1974837)

IPC Classification