TREA

Ralf Kollefrath

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  • Ruthi, CH
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dental instrument
    • Patent number 10,716,644
    • Issue date Jul 21, 2020
    • COLTÈNE/WHALEDENT AG
    • Ralf Kollefrath
    • C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
  • Information Patent Grant

    Clear silicone material for the registration of fingerprints
    • Patent number 8,142,833
    • Issue date Mar 27, 2012
    • Coltene AG
    • Dierk Lubbers
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Hardenable dental material
    • Patent number 7,998,264
    • Issue date Aug 16, 2011
    • Coltene Whaledent AG
    • Dierk Lubbers
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Process for the retraction of sulcus
    • Patent number 7,789,663
    • Issue date Sep 7, 2010
    • Coltene AG
    • Ralf Kollefrath
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Process for the retraction of sulcus
    • Patent number 7,549,862
    • Issue date Jun 23, 2009
    • Coltene AG
    • Ralf Kollefrath
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE

Patents Applicationslast 30 patents