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FREDY HELMER-METZMANN

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  • ESSENHEIM, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Hot-roller fixing toner for developing electrostatically charged im...
    • Patent number 7,252,918
    • Issue date Aug 7, 2007
    • Ticona GmbH
    • Toru Nakamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Toner for electrophotography
    • Patent number 6,162,572
    • Issue date Dec 19, 2000
    • Hoechst Research & Technology Deutchland GmbH & Co. KG
    • Junichi Fukuzawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Coated carrier for developing electrostatically charged images
    • Patent number 6,068,959
    • Issue date May 30, 2000
    • Hoechst Research & Technology
    • Toru Nakamura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Electrophotographic toner
    • Patent number 6,052,940
    • Issue date Apr 25, 2000
    • Hoechst Research & Technology Deutschland GmbH & Co. KG
    • Junichi Fukuzawa
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents